Overview
S32750 is the standard grade of super-duplex stainless steel based on 25% chromium, 7% nickel and significant additions of molybdenum, manganese and nitrogen. As with many of the duplex grades, S32750 also offers high strength and excellent resistance to chloride stress corrosion cracking, while the molybdenum and nitrogen levels enhance the pitting, crevice and general corrosion resistance.
Related Specifications of S32750
- F53
- Sandvik SAF 2507®*
- NACE MR 0175
- ISO 15156-3
- NORSOK M-630
- 1.4410
- X2CrNiMoN25-7-4
UNS S31803 (F51), UNS S32205 (F60) Alloy 2205, UNS S32550 (F61), UNS S32750 (F53), Alloy 2507 and UNS S32760 (F55).
Standards: ASTM/ASME A789/SA789, A790/SA790, A450, A530.
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205, UNS S32750(1.4410), UNS S31500(Cr18NiMo3Si2), UNS32760(1.4501).
Chemical Composition
Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
UNS S32750 | 550 | 800 | 15 | 20 |
UNS S31803 | 450 | 620 | 25 | 20 |
UNS S31500 | 440 | 630 | 30 | 20 |
Application
- 1. Chemical processing, Transport and Storage.
- 2. Oil and gas exploration and offshore rigs.
- 3. Oil and gas refining.
- 4. Marine environments.
- 5. Pollution control equipment.
- 6. Pulp and paper manufacturing
- 7. Chemical process Plant
