Precision machanical components

Surface finish

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Item#Surface treatment typeFollowed SpecFunction
Film 
Thickness
(um)
Thickness Changed
per side
 (um)
1AL Chromate OxidizingMIL-DTL-5541FCorrosion Resistance15-15
2Anodizing ClearMIL-A-8625FOxidization resistance,Abrasive resistance
and Decorative surface
5903
3Anodizing BlackMIL-A-8625FOxidization resistance,Abrasive
resistance and Decorative surface
71225
4Hard Anodizing ClearMIL-A-8625F
Oxidization resistance, ESD resistance,
Enhance hardness and abrasive
 resistance, decorative surface
2535812
5Hard Anodizing BlackMIL-A-8625F
Oxidization resistance, ESD resistance,
Enhance hardness and abrasive
 resistance, decorative surface
2535812
6Electroless.Nickel PlatingASTM B733-04 MIL-C-26074
Decorative surface, oxidization resistance, 
enhance hardness and corrosion resistance,
 abrasive resistance
3535
7Electroless. Thick Nickel PlatingASTM B733-04 MIL-C-26074
Decorative surface, oxidization resistance,
enhance hardness and corrosion resistance,
abrasive resistance
38423842
8Oxidized blackMIL-A-8625FDecorative surface, oxidization resistance0.51-20
9S.S Oxidizing BlackMIL-A-8625F
Oxidization resistance and 
decorative surface
0.51-31
10S.S PassivatingASTM-B633 
Oxidization resistance and
decorative surface
0.050.10.050.1
11S.S Electro polishingASTM B912-02Surface roughness improvement
and decorative surface
00.3-2-5
12Zinc Plating
 (white/ balck, colorful)
ASTM-B633 
Oxidization resistance, decorative 
surfaceCorrosion resistance
81258
13Silver plating           ASTM B700             
Decorative surface and conductivity 
improvement
3535
14Golden PlatingMIL-G-45204 
Decorative surface and conductivity
improvement
2323
15Hard Chrome PlatingMIL-C-14538C 
Oxidization resistance, decorative surface, surface roughness and abrasive-resistance improve ment
36 (812)36 (35)
16Zn/Fe coated + Cr bl.
Anti-oxidizing4~5.50.003~0.005
17ChromateASTM-B-117Anti-oxidizing,Anti-passivation1~20~2
18Titanium NitrideMIL-DTL-5541F-T
Anti-rusty,Increase surface 
hardness ,Anti-oxidizing
0.5~20.5~2
19Chromium Nitride12053-27-9Corrosion resistance32~3
19Chromium Nitride12053-27-9Corrosion resistance32~3
20More service:
Phosphorization, mirror polishing, Laser Cutting, Sheet Metal, Welding, EDM, Thermal deburring, Centerless grinding,
 Deep hole drilling, Circular grinding, Gear Shaping,

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