Stainless Steel SUS631 (17-7PH)

Stainless Steel SUS631 (17-7PH), corresponding to the Chinese national standard 0Cr17Ni7Al, is an outstanding dispersion-hardened stainless steel that plays a crucial role in numerous fields.

In terms of composition, it contains various alloying elements such as 16.00%-18.50% chromium (Cr), 6.50%-7.75% nickel (Ni), and 0.75%-1.50% aluminum (Al). Chromium endows it with good corrosion resistance, nickel enhances its toughness and corrosion resistance, and aluminum is a key element for precipitation hardening, effectively improving the strength of the material.

In terms of performance, it performs remarkably well. Its high strength and hardness enable it to withstand large loads, with a yield strength of ≥1030MPa and a tensile strength of ≥1230MPa. It has excellent fatigue resistance and can withstand multiple stress cycles without being easily damaged. It has excellent corrosion resistance and can remain stable in various corrosive environments. In a high-temperature environment, even when the temperature reaches 316°C, its spring performance remains stable, and it has minimal thermal deformation and good dimensional stability. At the same time, it also has good forgeability, making it easy to be processed into various complex-shaped parts.

This product complies with a variety of domestic and international standards such as ASTM, AISI, AMS, DIN, EN, JIS, GB, GJB, PN, ASME, and NACE, ensuring reliable quality. It has a wide range of specifications, with complete conventional specifications, and special specifications can also be custom-processed. It provides various in-stock product forms such as plates, precision strips, seamless pipes, round bars, flanges, forgings, elbows, and welding materials.

Stainless Steel SUS631 (17-7PH) has a wide range of application fields. In the aerospace field, it is used to manufacture key components of aircraft, such as wing spars and engine components, achieving lightweight while ensuring safety. In the chemical and petrochemical industries, it is commonly used to manufacture equipment such as reactors, pipelines, and valves to resist the corrosion of chemical media. In the paper and metal processing industries, it also meets the production requirements with its excellent performance. In addition, it also plays an important role in industries such as gas processing, power generation, food processing, fertilizers, and sugar production.

SUS631 stainless steel corresponding grade          

SUS631 stainless steel corresponding grade                                             

Mechanical properties of SUS631 stainless steel       

Hot Tags: China,custom , Stainless Steel SUS631 (17-7PH) , manufacturer,factory,supplier