Aluminum Anodizing - Hardcoat
Our fully automated line reliably produces MIL-A-8625 Type III, Class 1 & 2 (hardcoat) anodized parts up to 100″ in length. Comprised of 44 process tanks, the 5000 sq.ft line produces anodizing with high pH sealants and organic die coloring capabilities. Offering bright dip and satin finish applications, the fully automated line meets automotive industry requirements for exterior trim applications.
APC has capabilities to dye parts black with seals capable of meeting 13.5 PH automotive requirements. Our hardcoat capabilities include:
- Thickness ranges: 0.0001″ to 0.0030″
- As a rule of thumb depending on alloy anodizing thickness constitutes 50% build up versus 50% penetration into the substrate must be accounted for when calculating pre-anodize machining tolerances
- Rack Anodizing Only
- Tight tolerance ((+-.0003) precision thickness
- Precision masking for selective anodize requirements
- In-house coating weight analysis
- Taber abrasion testing
- Post anodize seals available for increased corrosion resistance meeting GM 14665 and Ford WSS-M4P13A requirements
What is Hardcoat Anodizing?
Hardcoat anodizing is an electrochemical process that creates a controlled oxide film on the surface of aluminum. Hardcoat anodizing utilizes sulfuric acid, bath temperature between 28 and 34 degrees F, and enough voltage to produce a very high surface hardness equivalent to (60-70 Rockwell C). Hardcoat anodizing is generally used for applications requiring corrosion, wear, abrasion resistance along with dielectric strength properties. The material appearance of the coating depending on alloy and thickness ranges from light to dark gray.
Hardcoat Anodizing Properties
- Compatible with adhesives
- Corrosion, ware, and abrasion resistant
- Excellent Coefficient of friction
- Resistant to marine and atmospheric corrosion
- High operating temperatures
- Dielectric strength
- Galvanic neutrality (prevents galvanic corrosion from interaction between dissimilar metals)
Typical Hardcoat Anodizing Applications