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Ball.Stainless Steel Ball Martensitic Stainless Ball
SUS420 / SUS440
It is designed to provide the highest hardness using anticorrosion material.
It is heat-treated for hardness and used in similar applications with the tool steel.
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Production Range
0.5mm~76.2mm
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Applications
Stainless steel bearings, Ball casters (Ball transfers), Ball mills, Automotive parts, Electronic parts, etc.
본문
Chemical Composition
| Symbol | Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Ni | Cr | Mo | Hardness(HRC) | |
| SUS440 | 0.95 ~ 1.10 | 0.95 | 1 | 0.04 | 0.03 | 0.6 | 16~18 | 0.75 | 58 or higher |
| SUS420 | 0.26 ~ 0.4 | 0.95 | 1 | 0.04 | 0.03 | - | 12~14 | - | 58 or higher |
Production Grade (Unit : ㎛)
| Grade | Name Application Range | Shape Precision and Roughness | Sectional Precision and Gauge | ||||
|---|---|---|---|---|---|---|---|
| Grade | Metric | Inch | Diameter Variance (VDWS) | Sphericity (Max) | Surface Roughness (Ra) | Variance in LOTs (VDWL) | Gauge Interval |
| 10 | 0.3 ~ 25 | 0.025 - 1 | 0.25 | 0.25 | 0.025 | 0.5 | 1 |
| 20 | 0.3 ~ 38 | 0.025 ~ 1½ | 0.5 | 0.5 | 0.04 | 1 | 2 |
| 40 | 0.3 ~ 5.0 | 0.025 ~ 2 | 1 | 1 | 0.08 | 2 | 4 |
| 100 | 0.3 ~ 65 | 0.025 ~ 4½ | 2.5 | 2.5 | 0.125 | 5 | 10 |
| 1000 | - | - | 25.4 | 25.4 | - | 50.8 | - |