High Strength 17-4PH Stainless Steel Bar 630 Precipitation Hardened Bar
Introduction to 17-4PH:
17-4PH stainless steel has excellent corrosion resistance, good mechanical properties and heat treatment plasticity, especially in chloride environment, it has excellent chloride stress corrosion cracking resistance.
Its composition includes elements such as iron, chromium, nickel, copper and molybdenum, while containing a small amount of carbon and niobium and other elements, with good mechanical properties and corrosion resistance,Especially in high temperature and strong corrosive environment, it shows good stability
Main characteristics of 17-4PH:
- High strength: 17-4PH has excellent strength and hardness, and can reach very high strength levels through heat treatment. For example, under condition H1150 (solution treatment plus low temperature aging), its tensile strength can reach about 1100 MPa.
- Good corrosion resistance: Compared with other stainless steels, 17-4PH has better corrosion resistance, especially in some climates and chemical environments.
- Excellent heat treatment performance: Its properties can be adjusted through heat treatment (such as solution treatment and aging treatment) to achieve higher strength or better corrosion resistance in different applications.
- Good grinding performance: After heat treatment, 17-4PH can usually obtain good surface grinding performance, suitable for applications requiring high precision and surface quality.
- Weldability: Although special attention should be paid to heat treatment and welding process, 17-4PH has good weldability under proper method.
Overall, 17-4PH is widely used in demanding engineering applications in aerospace, petrochemical, medical devices and other fields due to its balance of strength, hardness and corrosion resistance, as well as good heat treatment properties.
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 | | | |
17-4ph Main fields and uses
- Aerospace: Used to manufacture aircraft parts, engine parts, structural components of aerospace equipment, etc. It is particularly important in the aerospace field due to its high strength and lightweight characteristics.
- Oil and gas industry: Used to manufacture parts for oil wells and natural gas extraction equipment, such as valves, pump components and pipe connections, because of its corrosion resistance, it has advantages in harsh oil and gas environments.
- Medical devices: including surgical instruments, orthopedic implants, surgical forceps, etc. 17-4PH stainless steel has good biocompatibility and corrosion resistance, and is suitable for use in the field of medical devices.
- Marine engineering: used to manufacture components that are resistant to seawater corrosion and high-strength requirements, such as offshore platforms, marine equipment, and diving equipment.
- Automobile industry: It is used to improve the strength and wear resistance of automobile engine, transmission system, suspension system and other parts.
- Military industry: used to manufacture key components in military equipment and weapon systems, such as fire control systems, missile components, etc., due to their high strength and reliability.
In general, 17-4PH stainless steel is suitable for various industrial fields that require high strength, excellent corrosion resistance and good heat treatment performance, and is widely used in high-demand engineering and manufacturing fields.
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