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RPZ Valve
Stainless Steel Ball
| Feature | Details |
|---|---|
| Material | 210 / 440(C) / 420(C) / 304(L) / 316(L) |
| Size Range | 0.5mm - 150mm |
| Delivery Time | 7 - 15 Days |
| Characteristics | Good resistance to corrosion, widely application, stable in food environments and oxidizing solutions. |
| Applications | Valves, finger pumps, water pumps, cleaning brushes, nail polish bottles, motors, and toy balls. |



| AISI No. | C% | Si% | Mn% | Cr% | Ni% | Mo% | Property |
|---|---|---|---|---|---|---|---|
| 304 | 0.07 MAX | 1.00 MAX | 2.00 MAX | 17-19 | 8-10.5 | - | Slightly magnetic, HRC 25 min. |
| 316 | 0.07 MAX | 1.00 MAX | 2.00 MAX | 16.5-18.5 | 10.5-13.5 | 2.0-2.5 | Better corrosion resistance than SS304. |
| 420 | 0.07-0.25 | 1.00 MAX | 1.00 MAX | 12-14 | - | - | Magnetic, Martensite steel, HRC 50 min. |
| 440 | 0.95-1.20 | 1.00 MAX | 1.00 MAX | 16-18 | - | - | Martensite, fair corrosion to water and oil. |
| Property | 201 | 304 | 316 | 420C | 440C |
|---|---|---|---|---|---|
| Density | 7.85 g/m³ | 7.95 g/m³ | 7.95 g/m³ | 7.70 g/m³ | 7.75 g/m³ |
| Hardness | 25-39 HRC | 10-39 HRC | 10-39 HRC | 52-60 HRC | 57-65 HRC |
| Young's Modulus | 200 GPa | 200 GPa | 200 GPa | 205 GPa | - |



With over 100 employees and more than 20 years of production and research experience, we specialize in high-quality bearing steel balls, stainless steel balls, ceramic balls, tungsten steel alloy balls, and more. We offer customization for non-standard size balls ranging from 0.5mm to 150mm (Grade G10-G1000).
Our annual output exceeds 8000 tons. Equipped with advanced physical performance laboratories, we ensure all products meet stringent international standards for aviation, aerospace, automotive, and medical industries.

