Nadcap ISO-13485:2016 FAA Repair Station AS-9100D and ISO-9001:2015 Accredited & FDA, ITAR, FFL, ATF Registered & Programs: RoHs, ELV, NSF, DoD, DoE, & 10 CFR App B

Conversion Coatings

Conversion Coatings

Chem-Film, Alodine, Iridite are just some trade names used for  the chemfilm process

Main industry Specifications: MIL-C-5541, AMS 2473, MIL-DTL-5541 (Standard), MIL-DTL-5541 (Hex Free)

  • Clear Chromate
  • Gold Chromate
  • Tank Size, 180 ″L X 42″ W X 48″ Deep Note: This process may be moved to a larger tank upon request


  • Electrical Conductivity
  • Good Corrosion
  • Resistance
  • Excellent Paint Adhesion
  • BAC 5719 Boeing Approval

Techmetals also offers a Hex Free Chemfilm

Passivation and MedaPass Validated Medical Passivation

Techmetals Inc. offers a variety of passivation options. Techmetals passivation processes can meet standards for ASTM A967, ASTM A380, ASTM F86, ASTM B600, ASTM B912, MIL STD 808, SAE AMS 2700, SAE AMS QQ-P-35, and can meet most customer specification requirements as well. TM-MedaPass is another validated passivation process created by Techmetals  for the medical device industry. For a list of other available medical processes at Techmetals follow the link to our Medical Process Reference Guide.pdf.medapass

Small and Large Parts

Nitric Passivate
Citric Passivate
Specification Passivate
Acid Cleaning, Stripping, & Etching

Passivation is a chemical treatment on metallic surfaces for cleaning and added corrosion protection. The purpose of passivation is for the removal of “free iron” and other exogenous foreign material from a metallic surface. During passivation a thin transparent oxide layer is formed on the metallic surface .This oxide layer is a protective surface film that inhibits chemical and atmospheric corrosion. Passivation is primarily applied to stainless steels and titanium; however other metals can be passivated either by chemical treatments or other means.

largepartspassivationLarge Parts Passivation:

No passivation job is too large for Techmetals. Our large 2,400 gallon and 1,300 gallon tanks can process parts up to 15 feet long with a  10,000 lb load capacity. If a job is too large for our current capacity our team of skilled engineers can design a custom process to meet your needs. Our passivation process can run up to 24 hrs a day providing quick turn. Our medical passivation and TM-MedaPass processes are validated to ensure first time quality and exceptional repeatability. Techmetals can also design special propriety processes to meet any specialty need and passivation requirement. At Techmetals we are committed to quality, innovation, and superior service; because as our mission statement says, our goal is “To be So Good Our Customers Brag About Us!”.