MIL-PRF-8625 Anodizing

MIL-A-8625, MIL-PRF-8625 Type II Soft Coat and Type III Hard Coat

ASTM B580, NADCAP certified

Anodize is an oxide coating that is a highly effective corrosion protection for aluminum alloys and cast aluminum alloys. Anodizing is an excellent bonding base for paint, powder, and adhesives. The oxide is a hard electrically dielectric coating that can be dyed to different colors for decorative and none decorative purposes. Hard coat anodizing often referred to as MIL-PRF-8625 Type III is a thicker coating with a high degree of abrasion resistance. Types II and III are the most common types of anodizing.

MIL-PRF-8625 is the military specification that applies to anodizing aluminum. It has several types and two classes. Paramount Metal Finishing applies two types of MIL-A-8625 and two classes. Paramount Metal Finishing applies MIL-A-8625 Type II and Type III with class l and ll. Class I is the natural color that comes from anodizing the alloy. The natural colors span from clear, grey, olive green and black and are determined by several factors such as the alloy, process parameters and coating thickness. Class II relates to a dying process that can produce a wide spectrum of colors by soaking in a dye solution prior to sealing the surface.

Anodizing capabilities applied by Paramount Metal Finishing:

  • MIL-A-8625 or MIL-PRF-8625 Type II soft coat
  • MIL-A-8625 or MIL-PRF-8625 Type III hard coat
  • ASTM B580 Types A-F
  • Size: 6 ft. long x 4 ft. deep and 20 inches wide
  • Capacity: Hoist line- high production
  • Color dyes: Natural, Black, Gold, Blue and colors on demand.
  • Sealing options: Hot Water, Nickel Acetate, Sodium Silicate, Chromate
  • Racking systems: high production titanium racking systems

Note: MIL-PRF-8625 replaces MIL-A-8625. Both are still commonly used on drawings.

Paramount Metal Finishing is a specialist in anodizing and is an integrated coating applicator to ASTM, AMS and Military Specifications. We have capabilities to Plate, Anodize, Hard Coat Anodize, Sanchem, Conversion Coat, Paint, Powder Coat and Dry Film Lube in one location.

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