Company lists · Data refreshed November 2026

Top 25 Steel lead hardening & tempering suppliers based in the United States

RevenueBase identified 53 company matches for steel lead hardening & tempering suppliers associated with the United States as of November 2026 and tracks 804 professional contacts across them, including 278 with verified work emails. Cleveland is the largest hub.

This list covers company matches for steel lead hardening & tempering 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 November 2, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 2, 2026 How this list was built
53Companies
804Contacts tracked
278Verified emails
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The 25 largest steel lead hardening & tempering suppliers based in the United States

Ranked by team size
Top 25 of 53 company matches for steel lead hardening & tempering suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSt. Louis, MO, United StatesHQ recorded Nov 2, 2026201-500197 contacts →

Exact match

“Aalberts surface technologies - Paulo, delivers precision heat treating and thermal processing services that push the boundaries of what’s possible in metallurgical science.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2Exact matchDaytona Beach, FL, United StatesHQ recorded Nov 2, 202651-20086 contacts →

Exact match

“We are a commercial heat treater that processes parts for a wide variety of manufacturers and industries.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3Exact matchFraser, MI, United StatesHQ recorded Nov 2, 202651-20077 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 · Nov 2, 2026 · View company records in RevenueBase
4Exact matchWaukesha, WI, United StatesHQ recorded Nov 2, 202651-20072 contacts →

Exact match

“A privately held, commercial heat-treating company, ThermTech provides value added services to the Forging, Foundry, Machining, and Tool & Die markets.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5Exact matchJackson, MI, United StatesHQ recorded Nov 2, 202651-20029 contacts →

Exact match

“Industrial Steel Treating Company (IST) opened operations in Jackson, Michigan in 1943.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6Exact matchAvilla, IN, United StatesHQ recorded Nov 2, 202611-5024 contacts →

Exact match

“In 2007 Jeff McLaughlin, founded McLaughlin Services and quickly become an industry leader.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7Exact matchLa Porte, TX, United StatesHQ recorded Nov 2, 202651-20023 contacts →

Exact match

“HTS AmeriTek is a Gulf Coast industrial field services company based in La Porte, Texas.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchIndianapolis, IN, United StatesHQ recorded Nov 2, 202651-20022 contacts →

Exact match

“Contour is an expert provider of engineered heat treat service and equipment.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchDe Pere, WI, United StatesHQ recorded Nov 2, 202611-5021 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 · Nov 2, 2026 · View company records in RevenueBase
10Exact matchCleveland, OH, United StatesHQ recorded Nov 2, 202651-20018 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 · Nov 2, 2026 · View company records in RevenueBase
11Exact matchMillbury, MA, United StatesHQ recorded Nov 2, 202611-5016 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 · Nov 2, 2026 · View company records in RevenueBase
12Exact matchSouth Gate, CA, United StatesHQ recorded Nov 2, 202651-20016 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 · Nov 2, 2026 · View company records in RevenueBase
13Exact matchPinson, AL, United StatesHQ recorded Nov 2, 202611-5014 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 · Nov 2, 2026 · View company records in RevenueBase
14Exact matchElyria, OH, United StatesHQ recorded Nov 2, 202651-20014 contacts →

Exact match

“Ohio Metallurgical (Ohiomet) Service, Inc.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchMeadville, PA, United StatesHQ recorded Nov 2, 202651-20012 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 · Nov 2, 2026 · View company records in RevenueBase
16Exact matchSt. Paul, MN, United StatesHQ recorded Nov 2, 202611-5012 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchSouthbridge, MA, United StatesHQ recorded Nov 2, 202611-5011 contacts →

Exact match

“HARDLINE HEAT TREATING INC is a company based out of 134 ASHLAND AVE, SOUTHBRIDGE, Massachusetts, United States.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchSanta Clara, CA, United StatesHQ recorded Nov 2, 202611-5010 contacts →

Exact match

“AS9100 Certified Heat Treating Facility located in the Silicon Valley.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchMonroe, CT, United StatesHQ recorded Nov 2, 20261-1010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchWarren, MI, United StatesHQ recorded Nov 2, 202651-2008 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 2, 202651-2007 contacts →

Exact match

“Located in West Houston since 1993, Specialty Heat Treat, Inc.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchMilwaukee, WI, United StatesHQ recorded Nov 2, 202611-506 contacts →

Exact match

“Commercial Heat Treating (414) 643-5161 -or- 645-2340 Fax: 414-383-8766 -or- 643-1960 Email: Jake@CompleteHT.com or TJ@CompleteHT.com 1500 S Barclay St • Milwaukee, WI 53204 (near…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23Exact matchCarol Stream, IL, United StatesHQ recorded Nov 2, 20261-106 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 · Nov 2, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Nov 2, 202611-503 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchWestland, MI, United StatesHQ recorded Nov 2, 20261-103 contacts →

Exact match

“Family owned and operated since 1978, Westside Flame Hardening, Inc.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

Showing 25 of 53 steel lead hardening & tempering suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 278 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Steel lead hardening & tempering suppliers based in the United States at a glance

As of Nov 2, 2026
34.6%Verified-email coverage
15.2Average contacts per company
11-50Median size (employees)
3.8%Largest-city concentration · Cleveland
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
22
51-200
13
201-500
1

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 53 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 “steel lead hardening & tempering 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 278 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 November 2, 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 “steel lead hardening & tempering suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many steel lead hardening & tempering suppliers are there based in the United States?

RevenueBase identified 53 company matches for steel lead hardening & tempering suppliers associated with the United States as of November 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?

Aalberts Surface Technologies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most steel lead hardening & tempering suppliers?

Cleveland leads with 2 company records, followed by Houston (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 278 professional contacts with verified work emails tracked across these 53 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 November 2, 2026.

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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.