“BLACK ANODIZE PER MIL-A-8625 TYPE IIB, CLASS 2” refers to a specific type of black anodizing finish for aluminum based on the military specification MIL-A-8625. Let’s break down the components:
1.Black Anodize: Anodizing is an electrochemical process used to create a durable and corrosion-resistant coating on aluminum. “Black Anodize” indicates that the finish is black in color.
2.MIL-A-8625: This is a military specification that outlines the requirements for anodizing aluminum and aluminum alloys. MIL-A-8625 is a comprehensive standard that covers various types and classes of anodizing.
3.Type IIB: Within MIL-A-8625, Type IIB specifically refers to sulfuric acid anodizing with a non-chromic acid seal. Sulfuric acid anodizing is one of the common methods of anodizing, and Type IIB indicates a particular variation of the process.
4.Class 2: Class 2, as defined in MIL-A-8625, specifies that the anodized coating is dyed. For a black anodize finish, this means that the aluminum has undergone a dyeing process to achieve the black color.
In summary, “BLACK ANODIZE PER MIL-A-8625 TYPE IIB, CLASS 2” denotes a black anodizing finish on aluminum that follows specific procedures outlined in the military specification, including the use of sulfuric acid, a non-chromic acid seal, and a dyed coating. This type of finish is often used when both corrosion resistance and a black color are desired for aluminum components.
