Anodize Type II

Anodize Type II (Sulfuric)

Sulfuric acid anodizing is a conversion on aluminum which changes the surface to an aluminum oxide film that can range from (.0001″) – (.001″) thick. This oxide coating gives the aluminum a greater resistance to abrasion, protects from corrosion, and provides excellent thermal and electrical insulation. The aluminum oxide builds up on the surface and penetrates into the material an equal amount. Sulfuric acid anodize films are naturally porous which makes them great for absorbing colored dyes which can be later sealed with a PTFE coating to further protect against abrasion and bleaching effects caused by sunlight.


  • High Corrosion Resistance
  • Greater Abrasion Resistance
  • Non-Conductive
  • Cosmetic Appearance

Mil-A-8625F, Type II, Class 1 & 2
ASTM-B580-79 (reapproved 2014), Type B-F
AMS-2471H, undyed coating
AMS-2472G, dyed coating

Colors offered:
Natural (Clear), Gray, Black, Blue, Red, Green, Gold, Yellow, Bronze, Copper, Military Green and Tan

Available Process(es):

All of our anodize finishes are RoHS compliant.
JMD can provide corrosion testing according to ASTM B117 per request.
JMD can certify to any of the specifications mentioned above per request.