Company lists · Data refreshed October 2026
Top 23 Case hardening steel suppliers based in the United States
RevenueBase identified 51 company matches for case hardening steel suppliers associated with the United States as of October 2026 and tracks 502 professional contacts across them, including 143 with verified work emails. Warren is the largest hub.
This list covers company matches for case hardening steel suppliers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 23, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 23 largest case hardening steel suppliers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 77 contacts → | ||||
Exact match “Specialty Steel Treating, founded 1956, has been performing precision heat treating for more than 60 years.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 2 | 58 contacts → | ||||
Exact match “Curtis Metal Finishing Group is the largest heat treatment and finishing operation in North America with locations in Michigan and Illinois serving the automotive, heavy truck…” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 3 | 40 contacts → | ||||
Exact match “Ohio Star Forge Company is a leading producer of forged steel components located in Warren, Ohio.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 4 | 29 contacts → | ||||
Exact match “Industrial Steel Treating Company (IST) opened operations in Jackson, Michigan in 1943.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 5 | 24 contacts → | ||||
Exact match “In 2007 Jeff McLaughlin, founded McLaughlin Services and quickly become an industry leader.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 6 | 21 contacts → | ||||
Exact match “Metals Engineering is an ISO 9001:2015 certified commercial heat treater with locations in Green Bay and De Pere, Wisconsin.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 7 | 18 contacts → | ||||
Exact match “Since 1945, Euclid Heat Treating Company has offered heat treating services including case hardening, induction hardening, vacuum hardening, stress relieving, eddy current…” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 8 | 16 contacts → | ||||
Exact match “County Heat Treat is a Massachusetts-based metal heat-treating company specializing in hardening, tempering, annealing, nitriding, stress relieving, and customized thermal…” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 9 | 16 contacts → | ||||
Exact match “Accurate Steel Treating specializes in the thermal processing of and surface hardening of steels and some non-ferrous alloys.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 10 | 14 contacts → | ||||
Exact match “Pinson Valley Heat Treating Co is a mechanical or industrial engineering company based out of 6179 Sunrise Dr, Pinson, AL, United States.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 11 | 12 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 12 | 12 contacts → | ||||
Exact match “Heat Treating, Annealing, Carburizing, Induction Hardening, Laser Hardening, Vacuum Processing, Nitriding, Black Oxide Coating, Induction, Cryogenics.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 14 | 10 contacts → | ||||
Exact match “CONTOUR: DESIGNED TO TO DO WHAT OTHERS SAID COULDN’T BE DONE Contour was established in 1986 with the goal of providing a cost-effective solution to difficult heat treatment…” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “Commercial heat treating” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 16 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 17 | 7 contacts → | ||||
Exact match “MPD Welding Grand Rapids Inc is a welding and steel treating company based out of 1903 Clyde Park Ave SW, Wyoming, Michigan, United States.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 18 | 6 contacts → | ||||
Exact match “The most comprehensive range of heat treating services in the Midwest, delivered with unsurpassed quality and excellent service.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “We take heat treating services to the next level.” Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “case hardening steel suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 23 of 51 case hardening steel suppliers based in the United States
See the full list, filter by size, metro and specialty, and access 143 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Case hardening steel suppliers based in the United States at a glance
As of Oct 23, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 51 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “case hardening steel suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 143 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 23, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “case hardening steel suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many case hardening steel suppliers are there based in the United States?
RevenueBase identified 51 company matches for case hardening steel suppliers associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Specialty Steel Treating tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most case hardening steel suppliers?
Warren leads with 3 company records, followed by Cleveland (2) and Indianapolis (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 143 professional contacts with verified work emails tracked across these 51 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 23, 2026.
Ready to reach these companies? Verified emails and direct dials for all 51 case hardening steel suppliers based in the United States. Start with a free account, no credit card.
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Case hardening steel suppliers by geography
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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Company intelligence · public preview
Top 23 case hardening steel suppliers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 51 matching company records for case hardening steel suppliers based in the United States, with 502 tracked contacts and 143 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 23, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 23 case hardening steel suppliers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Specialty Steel Treatingsst.net HQ: Fraser, MI, United StatesReported employees: 51-200 | Fraser, MI, United States | 51-200 | Exact match | 77 contacts → |
“Specialty Steel Treating, founded 1956, has been performing precision heat treating for more than 60 years.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Curtis Metal Finishing Groupcurtismetal.com HQ: Madison Heights, MI, United StatesReported employees: 51-200 | Madison Heights, MI, United States | 51-200 | Exact match | 58 contacts → |
“Curtis Metal Finishing Group is the largest heat treatment and finishing operation in North America with locations in Michigan and Illinois serving the automotive, heavy truck…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ohio Star Forge Companyohiostar.com HQ: Warren, OH, United StatesReported employees: 51-200 | Warren, OH, United States | 51-200 | Exact match | 40 contacts → |
“Ohio Star Forge Company is a leading producer of forged steel components located in Warren, Ohio.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Industrial Steel Treating COindstl.com HQ: Jackson, MI, United StatesReported employees: 51-200 | Jackson, MI, United States | 51-200 | Exact match | 29 contacts → |
“Industrial Steel Treating Company (IST) opened operations in Jackson, Michigan in 1943.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mclaughlin Furnace Groupmclaughlinsvc.com HQ: Avilla, IN, United StatesReported employees: 11-50 | Avilla, IN, United States | 11-50 | Exact match | 24 contacts → |
“In 2007 Jeff McLaughlin, founded McLaughlin Services and quickly become an industry leader.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Metals Engineering, INCmetalsengineering.net HQ: De Pere, WI, United StatesReported employees: 11-50 | De Pere, WI, United States | 11-50 | Exact match | 21 contacts → |
“Metals Engineering is an ISO 9001:2015 certified commercial heat treater with locations in Green Bay and De Pere, Wisconsin.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Euclid Heat Treating Companyeuclidheattreating.com HQ: Cleveland, OH, United StatesReported employees: 51-200 | Cleveland, OH, United States | 51-200 | Exact match | 18 contacts → |
“Since 1945, Euclid Heat Treating Company has offered heat treating services including case hardening, induction hardening, vacuum hardening, stress relieving, eddy current…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | County Heat Treatcountyheattreat.com HQ: Millbury, MA, United StatesReported employees: 11-50 | Millbury, MA, United States | 11-50 | Exact match | 16 contacts → |
“County Heat Treat is a Massachusetts-based metal heat-treating company specializing in hardening, tempering, annealing, nitriding, stress relieving, and customized thermal…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Accurate Steel Treating, INCaccuratesteeltreating.comHQ: South Gate, CA, United StatesReported employees: 51-200 | South Gate, CA, United States | 51-200 | Exact match | 16 contacts → |
“Accurate Steel Treating specializes in the thermal processing of and surface hardening of steels and some non-ferrous alloys.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Pinson Valley Heat Treating COpvht.com HQ: Pinson, AL, United StatesReported employees: 11-50 | Pinson, AL, United States | 11-50 | Exact match | 14 contacts → |
“Pinson Valley Heat Treating Co is a mechanical or industrial engineering company based out of 6179 Sunrise Dr, Pinson, AL, United States.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Erie Steel, LTDerie.com HQ: Toledo, OH, United StatesReported employees: 11-50 | Toledo, OH, United States | 11-50 | Exact match | 12 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Peters' Heat Treating, INCpetersheattreat.com HQ: Meadville, PA, United StatesReported employees: 51-200 | Meadville, PA, United States | 51-200 | Exact match | 12 contacts → |
“Heat Treating, Annealing, Carburizing, Induction Hardening, Laser Hardening, Vacuum Processing, Nitriding, Black Oxide Coating, Induction, Cryogenics.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | American Heat Treating, INCamericanheattreating.com HQ: Monroe, CT, United StatesReported employees: 1-10 | Monroe, CT, United States | 1-10 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Contour Hardeningcontourhardening.com HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 10 contacts → |
“CONTOUR: DESIGNED TO TO DO WHAT OTHERS SAID COULDN’T BE DONE Contour was established in 1986 with the goal of providing a cost-effective solution to difficult heat treatment…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Thermal Modification Technologiesthermalmodtech.com HQ: Tualatin, OR, United StatesReported employees: 11-50 | Tualatin, OR, United States | 11-50 | Exact match | 9 contacts → |
“Commercial heat treating” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Super Steel Treating, INCsupersteeltreating.com HQ: Warren, MI, United StatesReported employees: 51-200 | Warren, MI, United States | 51-200 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | MPD Weldingmpdwelding.com HQ: Wyoming, MI, United StatesReported employees: 11-50 | Wyoming, MI, United States | 11-50 | Exact match | 7 contacts → |
“MPD Welding Grand Rapids Inc is a welding and steel treating company based out of 1903 Clyde Park Ave SW, Wyoming, Michigan, United States.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Metals Technology Companymetalstechnology.com HQ: Carol Stream, IL, United StatesReported employees: 1-10 | Carol Stream, IL, United States | 1-10 | Exact match | 6 contacts → |
“The most comprehensive range of heat treating services in the Midwest, delivered with unsurpassed quality and excellent service.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | P&l Heat Treating & Grindingplheattreating.com HQ: Youngstown, OH, United StatesReported employees: 11-50 | Youngstown, OH, United States | 11-50 | Exact match | 5 contacts → |
“We take heat treating services to the next level.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Magnum Metal Treating INCmagnummetaltreating.com HQ: Conroe, TX, United StatesReported employees: 11-50 | Conroe, TX, United States | 11-50 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | National Metal Processingnmpheattreat.com HQ: Richmond, KY, United StatesReported employees: 1-10 | Richmond, KY, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Nelson Heat Treating COnelsonheattreating.com HQ: Waterbury, CT, United StatesReported employees: 1-10 | Waterbury, CT, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Standard Heat Treating CO INCstandardht.com HQ: Cicero, IL, United StatesReported employees: 1-10 | Cicero, IL, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 23 of 51 company matches
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Case hardening steel suppliers: dataset insights
October 23, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
51 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 51 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 23, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for case hardening steel suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many case hardening steel suppliers did RevenueBase find based in the United States?
The saved snapshot records 51 matching company records, 502 tracked contacts and 143 verified emails. The public preview displays 23 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 23, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Case hardening steel suppliers by geography
Cite this list
RevenueBase Data Team. Top 23 case hardening steel suppliers based in the United States. Snapshot: October 23, 2026. https://revenuebase.ai/companies/case-hardening-steel-suppliers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Case hardening steel suppliers based in Germany
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 23 case hardening steel suppliers based in the United States
RevenueBase records 51 matching company records for case hardening steel suppliers based in the United States, with 502 tracked contacts and 143 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 23, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 23 case hardening steel suppliers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Specialty Steel Treatingsst.net HQ: Fraser, MI, United StatesReported employees: 51-200 | Fraser, MI, United States | 51-200 | Exact match | 77 contacts → |
“Specialty Steel Treating, founded 1956, has been performing precision heat treating for more than 60 years.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Curtis Metal Finishing Groupcurtismetal.com HQ: Madison Heights, MI, United StatesReported employees: 51-200 | Madison Heights, MI, United States | 51-200 | Exact match | 58 contacts → |
“Curtis Metal Finishing Group is the largest heat treatment and finishing operation in North America with locations in Michigan and Illinois serving the automotive, heavy truck…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ohio Star Forge Companyohiostar.com HQ: Warren, OH, United StatesReported employees: 51-200 | Warren, OH, United States | 51-200 | Exact match | 40 contacts → |
“Ohio Star Forge Company is a leading producer of forged steel components located in Warren, Ohio.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Industrial Steel Treating COindstl.com HQ: Jackson, MI, United StatesReported employees: 51-200 | Jackson, MI, United States | 51-200 | Exact match | 29 contacts → |
“Industrial Steel Treating Company (IST) opened operations in Jackson, Michigan in 1943.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mclaughlin Furnace Groupmclaughlinsvc.com HQ: Avilla, IN, United StatesReported employees: 11-50 | Avilla, IN, United States | 11-50 | Exact match | 24 contacts → |
“In 2007 Jeff McLaughlin, founded McLaughlin Services and quickly become an industry leader.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Metals Engineering, INCmetalsengineering.net HQ: De Pere, WI, United StatesReported employees: 11-50 | De Pere, WI, United States | 11-50 | Exact match | 21 contacts → |
“Metals Engineering is an ISO 9001:2015 certified commercial heat treater with locations in Green Bay and De Pere, Wisconsin.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Euclid Heat Treating Companyeuclidheattreating.com HQ: Cleveland, OH, United StatesReported employees: 51-200 | Cleveland, OH, United States | 51-200 | Exact match | 18 contacts → |
“Since 1945, Euclid Heat Treating Company has offered heat treating services including case hardening, induction hardening, vacuum hardening, stress relieving, eddy current…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | County Heat Treatcountyheattreat.com HQ: Millbury, MA, United StatesReported employees: 11-50 | Millbury, MA, United States | 11-50 | Exact match | 16 contacts → |
“County Heat Treat is a Massachusetts-based metal heat-treating company specializing in hardening, tempering, annealing, nitriding, stress relieving, and customized thermal…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Accurate Steel Treating, INCaccuratesteeltreating.com HQ: South Gate, CA, United StatesReported employees: 51-200 | South Gate, CA, United States | 51-200 | Exact match | 16 contacts → |
“Accurate Steel Treating specializes in the thermal processing of and surface hardening of steels and some non-ferrous alloys.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Pinson Valley Heat Treating COpvht.com HQ: Pinson, AL, United StatesReported employees: 11-50 | Pinson, AL, United States | 11-50 | Exact match | 14 contacts → |
“Pinson Valley Heat Treating Co is a mechanical or industrial engineering company based out of 6179 Sunrise Dr, Pinson, AL, United States.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Erie Steel, LTDerie.com HQ: Toledo, OH, United StatesReported employees: 11-50 | Toledo, OH, United States | 11-50 | Exact match | 12 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Peters' Heat Treating, INCpetersheattreat.com HQ: Meadville, PA, United StatesReported employees: 51-200 | Meadville, PA, United States | 51-200 | Exact match | 12 contacts → |
“Heat Treating, Annealing, Carburizing, Induction Hardening, Laser Hardening, Vacuum Processing, Nitriding, Black Oxide Coating, Induction, Cryogenics.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | American Heat Treating, INCamericanheattreating.com HQ: Monroe, CT, United StatesReported employees: 1-10 | Monroe, CT, United States | 1-10 | Exact match | 10 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Contour Hardeningcontourhardening.com HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 10 contacts → |
“CONTOUR: DESIGNED TO TO DO WHAT OTHERS SAID COULDN’T BE DONE Contour was established in 1986 with the goal of providing a cost-effective solution to difficult heat treatment…” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Thermal Modification Technologiesthermalmodtech.com HQ: Tualatin, OR, United StatesReported employees: 11-50 | Tualatin, OR, United States | 11-50 | Exact match | 9 contacts → |
“Commercial heat treating” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Super Steel Treating, INCsupersteeltreating.com HQ: Warren, MI, United StatesReported employees: 51-200 | Warren, MI, United States | 51-200 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | MPD Weldingmpdwelding.com HQ: Wyoming, MI, United StatesReported employees: 11-50 | Wyoming, MI, United States | 11-50 | Exact match | 7 contacts → |
“MPD Welding Grand Rapids Inc is a welding and steel treating company based out of 1903 Clyde Park Ave SW, Wyoming, Michigan, United States.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Metals Technology Companymetalstechnology.com HQ: Carol Stream, IL, United StatesReported employees: 1-10 | Carol Stream, IL, United States | 1-10 | Exact match | 6 contacts → |
“The most comprehensive range of heat treating services in the Midwest, delivered with unsurpassed quality and excellent service.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | P&l Heat Treating & Grindingplheattreating.com HQ: Youngstown, OH, United StatesReported employees: 11-50 | Youngstown, OH, United States | 11-50 | Exact match | 5 contacts → |
“We take heat treating services to the next level.” Recorded description excerpt · October 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Magnum Metal Treating INCmagnummetaltreating.com HQ: Conroe, TX, United StatesReported employees: 11-50 | Conroe, TX, United States | 11-50 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | National Metal Processingnmpheattreat.com HQ: Richmond, KY, United StatesReported employees: 1-10 | Richmond, KY, United States | 1-10 | Exact match | 3 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Nelson Heat Treating COnelsonheattreating.com HQ: Waterbury, CT, United StatesReported employees: 1-10 | Waterbury, CT, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Standard Heat Treating CO INCstandardht.com HQ: Cicero, IL, United StatesReported employees: 1-10 | Cicero, IL, United States | 1-10 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 23 of 51 company matches
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Case hardening steel suppliers: dataset insights
October 23, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
51 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 51 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 23, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for case hardening steel suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many case hardening steel suppliers did RevenueBase find based in the United States?
The saved snapshot records 51 matching company records, 502 tracked contacts and 143 verified emails. The public preview displays 23 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 23, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Case hardening steel suppliers by geography
Cite this list
RevenueBase Data Team. Top 23 case hardening steel suppliers based in the United States. Snapshot: October 23, 2026. https://revenuebase.ai/companies/case-hardening-steel-suppliers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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