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Plating Specifications:

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MIL-A-8625, AMS-A-8625, AMS 2471, AMS 2472
Type II- Sulfuric Anodize
Class I- Non Dyed, Class II- Dyed


QQ-P-416, ASM-QQ-P-416, ASTM-A165, AMS 2400
Class I- 0.0005, Class II- 0.0003, Class III- 0.0002
Type I- As plated w/o supplementary treatment
Type II- with supplementary chromate treatment
Type III- with supplementary phosphate treatment

Chromate Conversion (Chem Film)

MIL-C-5541, MIL-DTL-5541
Type 1 – Hexavalent
Type 2 – Trivalent
Class IA- heavier coating 40 to 10 mg/square foot
Class 3- lighter coating 10 mg/square foot

Chromate Conversion (Chem Film) MIL-C-5541 or MIL-DTL-5541

Type 1 – Hexavalent
Type 2 – Trivalent
Class IA- heavier coating 40 to 10 mg/square foot
Class 3- lighter coating 10 mg/square foot


MIL-C-14550, ASTM B734, AMS 2418
Class 0- 0.001-0.005 for heat treatment stop-off
Class I- 0.001 carburizing shield
Class II- 0.0005 plating undercoat
Class III- 0.0002 prevents metal migration
Class IV- 0.0001

Electroless Nickel

MIL-C-26074, ASTM B733, AMS 2404, AMS 2405, AMS-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


MIL-G-45204, MIL-DTL-45204, ASTM B488, AMS 2422
Type I (99.5%)
Type II ( 99.0%)
Type III (99.9%)

Hard Anodize

MIL-A-8625, AMS-A-8625, AMS 2468
Type III- thickness as specified, nominal 0.002
Class I- Non-dyed
Class II- Dyed as specified


QQ-N-290, AMS-QQ-N-290, AMS 2403, AMS 2423, AMS 2424
Class I- for corrosion protection
Class II- for engineering applications
Grade A- 0.0016
Grade B- 0.0012
Grade C- 0.0010
Grade D- 0.0008
Grade E- 0.0006
Grade F- 0.0004
Grade G- 0.0002


QQ-P-35, ASTM A967, ASM QQ-P-35, AMS 2700
Type II- medium temperature nitric acid with
Sodium dichromate
Type VI- low temperature Citric acid

Manganese Phosphate (Heavy)

DOD-P-16232, MIL-DTL-16232
Type M- Manganese Phosphate

Zinc Phosphate OR Iron Phosphate (Light)

Type I- Zinc Phosphate
Type II- Iron Phosphate


QQ-S-365, ASTM B700, AMS 2410
Type I- Matte finish
Type II- Semi-Bright finish
Grade A- Chromate post-treatment
Grade B- no supplementary treatment

Sulfamate Nickel

MIL-P-27418, QQ-N-290, ASM-QQ-N-290

Tin Plating

MIL-T-10727, ASTM B545, AMS 2408
Type I- Electrodeposited, 0.0001-0.00025 flash for solder, or 0.0003 min corrosion protection


ASM 2417, ASTM B841 Type 1 As-plated without supplementary treatment, service temperature 500 °F (260 °C) max.
Type 2 As-plated with supplementary chromate treatment
Grade A Hexavalent chromate treatment, service temperature 250 °F (121 °C) max.
Grade B Trivalent chromium treatment, service temperature 375 °F (191 °C) max.
Type 3 As-plated with supplementary phosphate treatment

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