Ano
Specification
MIL-A-8625 anodizing, decoded and run.
The controlling specification for anodic coatings on aluminum. If your drawing carries an 8625 callout, this page tells you how to read it, and we run it in Paoli every day.
What the spec covers
One spec, three coating types, two classes.
MIL-A-8625 governs anodic coatings on aluminum and aluminum alloys for military and aerospace work. It defines the coating types, the dyed and non-dyed classes, sealing requirements, and the testing that proves a lot conforms. Engineers searching the bare spec number usually hold a drawing with a callout like "ANODIZE PER MIL-A-8625 TYPE II CLASS 2, BLACK." That line is a complete instruction, and we run it as written.
Reading the callout
The 8625 callout, line by line.
| ELEMENT | MEANS | EXAMPLE |
|---|---|---|
| Type | Which coating process | Type II sulfuric, Type III hard coat |
| Class | Dyed or not | Class 1 clear, Class 2 black or color |
| Seal state | Wear against corrosion trade | Non-sealed hard coat wears best |
| Thickness | Coating build, when stated | Per the drawing dimension |
Type I is chromic acid anodize, a thin coating we do not run; when a drawing carries a Type I callout we say so up front rather than substituting. The full specification text is on the government's ASSIST library at quicksearch.dla.mil.
THE LINE · PAOLI, INDIANAWhere it runs
The tanks your callout lands in.
8625 work is not a specialty lane here; it is the daily bread. Both types run in our own tanks with batch QC, and defense work rides on our CAGE code.
Questions
MIL-A-8625, asked and answered
Which MIL-A-8625 types does AnoPRO run?
Type II sulfuric anodize and Type III hard coat, in clear and black, Class 1 and Class 2. We do not run Type I chromic acid anodize.
What is the difference between Class 1 and Class 2?
Class 1 is non-dyed, Class 2 is dyed. The class rides on either type; a black hard coat part is Type III Class 2.
Does the spec require sealing?
The callout decides. Non-sealed hard coat gives the best wear resistance; sealing improves corrosion protection. If the drawing is silent, we flag it before running.
How fast can you turn 8625 work?
3 to 4 days standard, expedites as fast as same day, with pickup and delivery inside 100 miles of Paoli.
Send the 8625 callout as written.
We quote from the drawing and hold the date. 3 to 4 days standard, same-day expedite available.