Quality heat treatment and fast turnaround at a fair price.

We're the largest commercial rotary heat treat shop in America. Building customer trust for over 70 years.

Why use American Metal Processing?

rotary gear
Rotary retort furnaces
Rotary furnaces offer superior quality results for specific part geometries and volumes. They excel at processing high volumes of smaller parts with tight tolerances and greater uniformity than competing technologies.
delivery truck
24-hour shipping and receiving
Our dock is open around the clock so that you don't have to wait to drop off or pick up your parts. We know that scheduling is critical to your business's success.
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Quality you can count on
Rest assured that your parts are in good hands with us. We are IATF 16949:2016, ISO 9001:2015 certified, as well as CQI-9 compliant. Please find our certificates on the Quality page.
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Easy billing
We've set up our billing so that you get invoices the way your accounting department needs them. We always try to make your business transactions with us as smooth and trouble free as possible.
factory
Fast turnaround
Our average turnaround time is less than five business days. Shorten your lead time and become a rock star in the eyes of your boss or customer. We won't tell.
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Digital records
Need to access records from that order processed a few months ago? Not a problem. We keep everything archived and available to you—just give us a call or drop us an email.
About

Who we are

American Metal Processing Company (AMP) is the nation's largest commercial rotary heat treat facility. Since 1945, we've provided the highest quality product available in the heat treatment of parts for the automotive, construction, agricultural, aircraft, and military industries. We're not just a supplier, we're your partner.

our history
1960s AMP building
Services

What we do

AMP specializes in neutral and case hardening of small steel parts produced by stamping, fineblanking, heading, forging, and machining operations. Our process is best suited to high-volume, mass-produced parts with simple geometries. We offer both water- and oil-based quenchants in tandem with our neutral- and case-hardening furnaces.

Our services
Conical roller bearings
Let us do the dirty work.
We know that getting parts on-time and within specification is paramount to your supply chain. That's why we offer rush service, flexible scheduling, and 24-hour shipping and receiving.
Start Now
AMP Logo
22720 Nagel St.
Warren, MI 48089
(586)757-7337