H & W Global offers sulfuric acid anodizing with a wide variety of options for sealing the finished metal surface. Anodizing is essentially controlled oxidation of a light metal, most often aluminum and aluminum alloys.
Anodizing brings value to aluminum parts by creating a uniform aluminum oxide layer. This is the hardest of all surface finishes. Anodized aluminum is corrosion resistant, plus the anodizing process yields an outer surface to which paint and other organic finishes can adhere.
Anodizing is excellent for both indoor and outdoor applications. The coating achieved through anodizing may be decorative, as in soft coat anodizing, or it may be applied to add mechanical strength, as in hard coat anodizing. H & W Global offers both processes with many custom options.
For example at H&W, clients have almost unlimited choices in the color as well as the finish of their anodized pieces. If no coloring is desired, the anodized coating may simply be sealed, in which case it will appear silver. This is often referred to as “clear anodizing.”
While most industrial anodizing is performed on aluminum and its alloys, H & W Global can anodize magnesium, titanium, and a number of other metals.
Soft Coat Anodizing
H&W Global offers soft-coat anodizing that is commonly used for decorative purposes and can apply a bright color coat to most aluminum alloys.
The soft-coat anodizing (MIL-A-8625 Type II) process takes place at 72 degrees F in a sulfuric acid solution. The coating thicknesses achieved through this anodizing process ranges from 0.2 mils to 0.7 mils for interior coatings, and 0.8 mils to 2.0 mils for exterior coatings. The direct current (DC) power needed may range from 12 to 18 amps per square foot (ASF).
As with everything we do at H&W Global, this coating process undergoes proven process-control inspections allowing us to deliver the highest levels of quality and consistency.