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Standard Specification for S32750
| UNS | S32750 |
| Other name | 2507 |
| Standard | ASTM A959-2004 |
| Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels | |
| Classification | Duplex Stainless Steel |
| Introductions | 2507 is a ferritic-austenitic (duplex) stainless steel, which combines many of the most beneficial properties of ferritic and austenitic steels, and has excellent resistance to spot corrosion, crevice corrosion and uniform corrosion due to the high content of chromium and molybdenum in the steel. The biphase microstructure ensures that the steel has a high resistance to stress corrosion cracking and a high mechanical strength. 2507 stainless steel is used in oil and gas industry; Offshore oil platform (heat exchanger tube, water treatment and water supply system, fire fighting system, sprinkler system, water stabilization system; Petrochemical equipment; Desalination (desalination) equipment (and high-pressure pipes in the equipment, seawater pipes); Mechanical and structural components that require both high strength and high corrosion resistance; Fuel (waste) gas purification equipment. It can also be used to manufacture screws, bolts, studs, nuts and other fasteners. |
| S32750 Chemical Element Content (%) | ||||||||||
| Constituent | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | N |
| Min | – | – | – | – | – | 24 | 6 | – | 3 | 0.24 |
| Max | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 26 | 8 | 0.5 | 5 | 0.32 |
| China | Japan | America | The International Standard Organization | Germany | European standard | |||||
| GB | ISC | JIS | ASTM | UNS | ISO | Numerical grade | DIN EN/DIN | W-Nr. | EN | Numerical grade |
| 022Cr25Ni7Mo4N | S25073 | UR 47N+ | 2507 | S32750 | X2CrNiMoN25-7-4 | 4410-327-50-E | X2CrNiMoN25-7-4 | 1.441 | X2CrNiMoN25-7-4 | 1.441 |
