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The 420 stainless steel ball is a high-strength, high-hardness steel ball made of high-carbon martensitic stainless steel. It possesses excellent corrosion resistance and mechanical properties, making it widely utilized in various industries such as bearing manufacturing, precision instruments, the aerospace industry, and medical equipment.
| Material Composition | Carbon (C) | Manganese (Mn) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) | Phosphorus (P) | Sulfur (S) |
| 0.15-0.40% | 1.0% max | 1.0% max | 12.0-14.0% | 0.75% max | 0.04% max | 0.03% max | |
| Technical Data | Hardness | HRC 50-55 | |||||
| Tensile Strength | 1860 MPa | ||||||
| Density | 7.75 g/cm³ | ||||||
| Corrosion Resistance | Excellent, especially in freshwater and atmospheric environments | ||||||
| Grade | G10-G1000 | ||||||
| Size Range | 1mm - 250mm | ||||||
