Type II – Sulfuric

Overview

Sulfuric acid is the most widely used solution to produce anodize coatings. Type II is defined as having a modern thickness range between 0.00007” to 0.001”

Sulfuric anodizing is used on applications to improve its aesthetics, provide vibrant color coatings, and good wear and corrosion resistance. Sulfuric anodizing (Type II) uses conventional coating methods produced from a sulfuric acid bath, with the process taking between 20 to 60 minutes depending on the type of alloy used. Sulfuric anodizing increases the material’s wear resistance, corrosion resistance, ability to retain lubricants and PTFE coatings, and electrical and thermal insulation.

Key Performance Properties of Type II Sulfuric Anodizing:

• Corrosion resistance with 336 + hours of salt spray resistance
• Surface durability
• Excellent dye ability
• Electrical insulation
• Aesthetics
• Increased abrasion resistance
• Flame resistance

Specifications

• MIL-A-8625
• AMS 2471
• AMS 2472