Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
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High-Strength 17-4PH Stainless Steel Bar (Grade 630) - Precipitation Hardened
Overview:
17-4PH stainless steel provides exceptional corrosion resistance, strong mechanical properties, and excellent heat treatability. It features superior resistance to chloride stress corrosion cracking in chloride environments. Its composition—iron, chromium, nickel, copper, and molybdenum, plus minor carbon and niobium—delivers reliable performance and stability in high-temperature and highly corrosive conditions.
Key Properties:
Applications:
Widely used in aerospace, petrochemical, medical devices, and other demanding fields due to its optimal balance of strength, hardness, corrosion resistance, and heat treatability.
Chemical composition is (%)
| Ni | Cr | P | S | Cu | C |
| 3.0~5.0 | 15.00~17.50 | ≤0.04 | ≤0.03 | 3.0~5.0 | ≤0.07 |
| Si | Mn | Nb+Ta | |||
| ≤1.00 | ≤1.00 | 0.15~0.45 |
