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Metallurgical Engineering Solutions and Steel Heat Treatment Services

Industrial heat treating, steel nitriding, vacuum hardening, and a range of specialized surface treatments since 1958.

Sun Steel Treating is a leading provider of industrial metal treatment services for the greater Midwest region and beyond.

An ISO 9001:2015 certified American manufacturer, our company specializes in providing quality-enhancing heat treating, ion nitriding, and vacuum hardening solutions, along with a range of additional metallurgical engineering capabilities.

Recently, we launched a completely retooled website to better reflect our company’s industry-leading capabilities and experience. Read on for a brief overview of what’s new.

A Complete Range of Specialized Metal Heat Treatment Services

Based out of South Lyon, Michigan, Sun Steel’s state-of-the-art facility is capable of plasma nitriding industrial tooling and parts weighing up to 30 tons. Our cutting-edge vacuum hardening system processes components up to 8,000 pounds with a 12-bar quench pressure. Our additional thermal treatment services and surface hardening solutions include metal steam treating, annealing, steel stress relieving, and mirror-like polishing.

Serving a Diverse Range of Commercial Markets and Industrial Applications

With decades of combined experience, Sun Steel Treating’s material expertise spans a diverse range of commercial and industrial sectors, including:

  • Aerospace Components
  • Automotive Manufacturing
  • Forged Steel Treating
  • Medical Instruments
  • Military and Defense
  • Oil and Gas
  • Plastic Molding Equipment
  • Power Generation
  • Die Cast Tooling and Parts
  • Tool and Die Stamping

Your Single Source for Steel Treating in Michigan and Throughout the Greater Midwest

Get in touch to discover how Sun Steel Treating’s innovative metallurgical engineering solutions can enhance the quality, consistency, performance, and longevity of your industrial equipment, tooling, and components.


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Quality Commercial Heat Treating Services Since 1958