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- Notice of End of Sales for Economy Series Pneumatic Equipment Category. More details.
Types of Surface Treatment and External Appearance Colors
Types of Surface Treatment
*The figures below are reference values.
| Name | Vickers hardness （HV） |
Layer thickness （μm） |
Treatable materials | Examples of Use | Purpose/features | Remarks | |
|---|---|---|---|---|---|---|---|
| Zinc plating | − | 3～20 | Steel | Thin plates Wires |
- Rust preventing, low cost - External appearance not good |
− | |
| Chromate plating | − | 1～2 | Steel | Sheet metal parts Bolts and nuts |
- Rust preventing, low cost - Suited to mass production - Works as an nickel plating alternative although the appearance is not as good |
− | |
| Bright chromate plating | − | 1～2 | Steel | − | |||
| Trivalent chromate | − | 1～2 | Steel | Bolts and nuts | - Rust preventing, low cost - Does not contain hexavalent chrome |
− | |
| Nickel plating | − | − | Steel Copper Brass |
− | - Improves corrosion resistance and gives decorative quality - Chrome plating has better corrosion resistance in the open air |
- Apply base coating to copper as necessary - Cannot applied to deep recesses |
|
| Buffed plating | 500 | 5～20 | - Better external appearance than plating without buffing | - Material -> Buffing -> Plating -> Buffing | |||
| Plating without buffing | − | - Material -> Plating | |||||
| Satin plating | − | − | - Fatigue resistant - Small scratches are not noticeable |
- Material -> Matte finish -> Plating | |||
| Electroless nickel plating | 500 | Can be specified | Steel Stainless steel Copper Aluminum alloy Glass Plastic |
Parts that cannot be nickel-plated Parts to be hardened after plating |
- Film thickness control is easy - Excellent corrosion resistant and abrasion resistance - Can make non-metallic materials conductive - Can be hardened with heat treatment after plating |
− | |
| Chrome plating | − | − | Steel Copper Brass |
− | - Glossy external appearance - Excellent corrosion resistance - Sliding contact between chrome plating can cause seizure |
- Needs base coat with nickel as necessary - Cannot applied to deep recesses |
|
| Buffed plating | 500 | 5～20 | - Better external appearance than plating without buffing | - Material -> Buffing -> Plating -> Buffing | |||
| Plating without buffing | − | - Material -> Plating | |||||
| Satin plating | − | − | - Fatigue resistant - Small scratches are not noticeable |
- Material -> Matte finish -> Plating | |||
| Rigid chrome plating | 1000 | 10～30 | Shafts Sliding parts |
- Outstanding abrasion resistance - More expensive than other chrome plating |
- Material -> Plating (without buffing) | ||
| Black oxide coating (black oxide finish) |
− | − | Steel | Bolts Nuts Measuring instruments |
- Base painting - External appearance (glossy) - More prone to rust than TUFFTRIDE process |
- Generates black oxide steel | |
| Low temperature black chrome plating | − | 1～2 | Steel Copper Stainless steel |
Parts that require precision | - Long-term rust prevention - The most excellent corrosion resistance among black plating - Ultra thin film |
- Gives no heat impact on the material thanks to the low temperature treatment and parts coupled with plastic, rubber, and other materials can be processed as they are. | |
| Anodizing | White | − | 3～5 | Aluminum alloy | − | - Corrosion-proof and abrasion resistant - No electrical conductivity - Heat resistant |
- A color anodizing coating is performed by generating a hard oxide film on the surface and using pores on the film to color the material. |
| Black | − | 5～10 | |||||
External Appearance Colors of Surface Treatment
| Bright chromate plating | Trivalent chromate | Electroless nickel plating | Rigid chrome plating |
|---|---|---|---|
 |
 |
 |
 |
| Black oxide coating | Anodizing (white) | Anodizing (black) | |
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