Finishing Specifications

Shown below is a list of basic specifications used in the Metal Finishing Industry.  It is in no way comprehensive, and is shown for reference purposes only. Clicking a specification link will bring you to the detail page where you can get more information about the process.

Print List

Please note that only those processes marked with asterisks (**) are currently offered by Electrolurgy.

Basic Finishing SpecificationsOfferedType/Grade/ClassNotes
**Type II - Sulfuric Anodize
**Type III - HardCoat
**Class I - Non Dyed, Class II- Dyed
Chem Film / Chromate Conversion Coatings**MIL-DTL-5541 or MIL-C-81706
**Class IA- heavier coating 40 to 10 mg/square foot
**Class 3- lighter coating 10 mg/square foot
Electroless Nickel Plating**MIL-C-26074
**Class I- As plated w/o supplementary heat treatment
**Class II - Heat treated to obtain required hardness
**Class III - Aluminum alloys, non-heat-treat
**Class IV- Aluminum alloys, heat-treat
**Grade A - 0.0010
**Grade B - 0.0005
**Grade C - 0.0015
**Commercial - As specified
Hard Anodizing**MIL-A-8625, Type III, AMS 2468
**Type III- thickness as specified, nominal 0.002
**Class I - Non-dyed
**Class II - Dyed as specified
**Type II- medium temperature nitric acid with Sodium dichromate
**Type VI- low temperature Citric acid
Sulfuric AnodizingMIL-A-8625,AMS 2471, AMS 2472
Electroless Nickel (high, mid, and low phosphorous)MIL-C-26074, AMS 2404, AMS2405, ASTM B733
Zinc Nickel Plating**AMS-2417
**Type 1 - As Plated
**Type 2 - With Chromate Treatment
**Grade A - With Hexavelent Chromate
**Grade B - With Trivalent Chromate