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What is ASTM B449 | Chromate | Conversion Coating? 

At AOTCO, we work with a variety of clients in a wide range of highly specialized fields. Many times, industry leaders will create certain specifications for us to follow to ensure quality and consistency every time.

ASTM B449 is one of the industry standards for Conversion Coatings / Chromate. The spec includes 4 classes (1-4).

Benefits of ASTM B449 Conversion Coating 

Components covered in the hexavalent chromate layer provided by an ASTM B449 Conversion Coating will inherit the following qualities:    

  • Protects from Wear  
  • Anti-Corrosive   
  • Pre-Treatment for Paint or Powder  
  • Conductivity  
  • Cost Effective   
  • And more!