Views: 0 Author: Site Editor Publish Time: 2025-11-03 Origin: Site
AISI 420C stainless steel balls are martensitic stainless steel products that can achieve a hardness of 56-58 HRC through heat treatment, far exceeding that of ordinary carbon steel balls. These 420C Stainless Steel Balls not only possess strong magnetism and facilitate automated assembly, but are also suitable for high-intensity environments.
Equivalent to the domestic standard 5Cr13, AISI 420C stainless steel balls are manufactured with a focus on surface finish and dimensional accuracy, typically achieving G10-G1000 grades. Compared to AISI 440C, it offers greater cost control while maintaining excellent mechanical properties, making it an ideal choice for mid-to-high-end precision ball bearings.
| C% | Si% | Mn% | P% | S% | Cr% | Ni% | Mo | Cu |
| 0.46 | 0.40 | 0.41 | 0.016 | 0.003 | 13.34 | 0.09 | 0.01 | 0.06 |
| Properties | UOM | Test Value |
| Density (Room temperature) | g/cm3 | 7.75 |
| Specific Heat (Room temperature) | J/Kg.℃ | 460-490 |
| Coefficient of linear heat expansion | 10^-6/℃ | 10-12 |
| Thermal Conductivity (100℃) | W/m.K | 25 |
| Electric Resistivity | Ω.m | 0.6 |
| Hardness | HRC | 53.5 |
| Ultimate tensile strength | MPa | 1000-1300 |
| Properties | Reference Standard | Test Value |
| DW(Diameter) | 16mm | 16mm±0 |
| Material | AISI420C | 5Cr13 |
| Grade | G100 | G100 |
| VDWS (Ball Dia. Variation) | ＜2.5μm | 1.5μm |
| Ra (Surface Roughness) | ＜0.125μm | 0.1μm |
| VDWL (Lot Dia. Variation) | ＜5μm | 4μm |
| △SPH (Deviation from spherical form) | ＜2.5μm | 1.5μm |
Among companies seeking the corrosion resistance of 5Cr13 stainless steel balls, AISI 420C stands out.
High Hardness and Wear Resistance: Achieving a hardness of 52-55 HRC after heat treatment ensures no deformation during long-term use.
Moderate Corrosion Resistance: Suitable for non-strong acid and alkali environments, avoiding the additional costs of expensive alloy steels.
Economy: Mature production process, suitable for large-scale manufacturing, such as valves and writing instruments.
