MGS Incorporated

Preparation & Coating

TT-C-490 Chemical Conversion Coating & Pretreatments for Metallic Substrates (Base for Organic Coating)

• MGS's typical surface preparation adheres to TT-C-490 methods I and VI.  Booth blasting is not typical.
• Our surface preparation for Military coatings adheres to Federal Specification TT-C-490.  MGS has proven each process listed below internally and received independent approval for these processes as well; approval granted by such entities as Raytheon Defense Systems and Lockheed Martin.

1.2.1 Surface Cleaning

• Method I - Mechanical, Abrasive Blast
• Method II - Solvent Cleaning
• Method VI - Phosphoric Acid (detergent) Cleaning