Material Group 8.2 ISO/TR 15608: Austenitic stainless steels with
Cr > 19 % and Ni ≤ 35 %
Features of Austenitic stainless steels group 8.2 such as 253MA
Higher alloyed stainless steels generally exhibit excellent elevated temperature strength along with resistance to creep deformation and environmental attack. Because of the higher chromium (and nickel) content, the corrosion resistance and heat resistance of these grades is slightly better than that of stainless steel 304.
Applications for Stainless Steel e.g. 253MA
These alloys are also used in the chemical process industry to contain hot concentrated acids, ammonia, and sulfur dioxide. In the food processing industry, they are used in contact with hot acetic and citric acid.
Good strength and oxidation resistance in continuous service temperatures dry air up to 1100 °C). However, the temperature range from 600 °C to 900 °C should be avoided as grain disintegration may occur, which negatively affects the notched impact values at room temperature. Due to the relatively high content of N and C, resistance in reducing or oxidizing atmospheres is poor. This is particularly the case in sulfur-containing gases.
Used in different industries such as oil & gas, refineries, fertilisers, heat exchangers, pharmaceuticals, chemicals, apparatus engineering, sugar & food processing .
Typical materials in group 8.2
| Name / Grade | Number | Standards | Product | Alloy / Trade Mark | Remarks |
|---|---|---|---|---|---|
| X1CrNi25-21 X1CrNi25-20 | 1.4335 1.4335 | EN 10028-7 EN 10216-5 | Plate Seamless tube | – – | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 |
| GX2NiCrMo28-20-2 | 1.4458 | EN 10213 | Casting | – | EN 13445-2 & EN 13480-2 |
| X1CrNiMoN25-22-2 X1CrNiMoN25-22-2 | 1.4466 1.4466 | EN 10028-7 EN 10216-5 | Plate Seamless tube | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 | |
| X1NiCrMoCuN25-20-7 X1NiCrMoCuN25-20-7 X1NiCrMoCuN25-20-7 X1NiCrMoCuN25-20-7 X1NiCrMoCuN25-20-7 926 926 926 926 926 | 1.4529 1.4529 1.4529 1.4529 1.4529 N08926 N08926 N08926 N08926 N08926 | EN 10028-7 EN 10272 EN 10216-5 EN 10217-7 EN 10253-4 ASTM B-625 ASTM B-649 ASTM B-673 ASTM B-674 ASTM B-677 | Plate Bar Seamless tube Welded tube Fittings Plate Bar Welded pipe Welded tube Smls. pipe & tube | 926 VDM® Alloy 926 INCOLOY® C Alloy 25-6M | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| X1CrNiMoCuN25-25-5 | 1.4537 | EN 10028-7 | Plate | – | EN 13445-2 & EN 13480-2 |
| X1NiCrMoCu25-20-5 X1NiCrMoCu25-20-5 X1NiCrMoCu25-20-5 X1NiCrMoCu25-20-5 X1NiCrMoCu25-20-5 F904L 904L – – – 904L – – – – – | 1.4539 1.4539 1.4539 1.4539 1.4539 N08904 N08904 N08904 N08904 N08904 N08904 N08904 N08904 N08904 N08904 N08904 | EN 10028-7 EN 10272 EN 10216-5 EN 10217-7 EN 10253-4 ASTM A-182 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-403 ASTM A-479 ASTM B-625 ASTM B-649 ASTM B-673 ASTM B-674 ASTM B-677 | Plate Bar Seamless tube Welded tube Fitting Forging Plate Welded tube Smls. & welded pipe Fitting Bar Plate Bar Welded pipe Welded tube Smls. pipe & tube | 904 VDM® Alloy 904 L | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| X1NiCrMoCuN20-18-7 X1NiCrMoCuN20-18-7 X1NiCrMoCuN20-18-7 X1NiCrMoCuN20-18-7 X1NiCrMoCuN20-18-7 – S31254 S31254 S31254 S31254 – S31254 S31254 S31254 S31254 S31254 | 1.4547 1.4547 1.4547 1.4547 1.4547 S31254 S31254 S31254 S31254 S31254 S31254 S31254 S31254 S31254 S31254 S31254 | EN 10028-7 EN 10272 EN 10216-5 EN 10217-7 EN 10253-4 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-403 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 ASTM B-366 | Plate Bar Seamless tube Welded tube Fittings Seamless tube Plate Welded tube Smls. & welded pipe Fusion welded pipe Fitting Welded pipe Bar Welded pipe Cold worked weld. pipe Forging fittings | 254SMO Ultra 254 SMO® | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| GX2CrNiMoCuN20-18-6 | 1.4557 | EN 10283 | Steel casting | – | – |
| X2NiCrAlTi32-20 | 1.4558 | EN 10216-5 | Seamless tube | – | EN 13445-2 & EN 13480-2 |
| X1NiCrMCu31-27-4 X1NiCrMCu31-27-4 X1NiCrMCu31-27-4 X1NiCrMCu31-27-4 | 1.4563 1.4563 1.4563 1.4563 | EN 10028-7 EN 10216-5 EN 10217-7 EN 10272 | Plate Seamless tube Welded tube Bar | – – – – | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 |
| GX35NiCrSi2S-21 | 1.4805 | EN 10295 | Steel casting | – | – |
| GX40CrNiSi22-10 | 1.4826 | EN 10295 | Steel casting | – | – |
| X15CrNiSi20-12 309 WP309 | 1.4828 S30900 S30900 | EN 10095 ASTM A-167 ASTM A-403 | – Plate Fitting | 309 ATI 309™ | – ASME BPVC ASME BPVC |
| TP309Cb 309Cb TP309Cb TP309Cb 309Cb TP309Cb 309Cb TP309Cb TP309Cb | S30940 S30940 S30940 S30940 S30940 S30940 S30940 S30940 S30940 | ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 | Smls. tube Plate Welded tube Smls. pipe & tube Fusion welded pipe Welded pipe Bars Welded pipe Cold worked weld. pipe | 309Cb | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| TP309HCb 309HCb TP309HCb TP309HCb | S30941 S30941 S30941 S30941 | ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 | Smls. tube Plate Welded tube Smls. pipe & tube | 309HCb | ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| X9CrNiSiNCe21-11-2 F45 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 – | 1.4835 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 S30815 | EN 10095 ASTM A-182 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 ASTM B-366 | – Forging Seamless tube Plate Welded tube Smls. & welded pipe Fusion welded pipe Welded pipe Bar Welded pipe Cold worked weld. pipe Forging fittings | 253MA Therma 253 MA® | – ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| GX25CrNiSi20-14 | 1.4837 | EN 10295 | Steel casting | ||
| X15CrNiSi25-21 314 | 1.4841 S31400 | EN 10095 ASTM A-276 | – Bar | – 314 | – ASME BPVC |
| GX40CrNiSi25-20 | 1.4848 | EN 10295 | Steel casting | – | – |
| GX40NiCrSiNb38-19 | 1.4849 | EN 10295 | Steel casting | – | – |
| GX40NiCrSiNb35-26 | 1.4852 | EN 10295 | Steel casting | – | – |
| X6CrNi23-13 TP309S 309S TP309S TP309S 309S TP309S 309S TP309S | 1.4950 S30908 S30908 S30908 S30908 S30908 S30908 S30908 S30908 | EN 10028-7 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-409 ASTM A-479 ASTM A-813 | Plate Seamless tube Plate Welded tube Smls. pipe & tube Fusion welded pipe Welded pipe Bar Welded pipe | 309S | EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| TP309H 309H TP309H TP309H | S30909 S30909 S30909 S30909 | ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 | Seamless tube Plate Welded tube Smls. & welded pipe | 309H | ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| 310 F310 F310 | S31000 S31000 S31000 | ASTM A-167 ASTM A-182 ASTM A-965 | Plate Forgings Forgings | 310 | ASME BPVC ASME BPVC ASME BPVC |
| X6CrNi25-20 TP310S 310S TP310S TP310S 310S WP310S TP310S 310S TP310S TP310S | 1.4951 S31008 S31008 S31008 S31008 S31008 S31008 S31008 S31008 S31008 S31008 | EN 10028-7 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-403 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 | Plate Seamless tube Plate Welded tube Smls. & welded pipe Fusion welded pipe Fitting Welded pipe Bar Welded pipe Cold worked pipe | – 310S 310S ATI 310S™ 310S 310S 310S 310S 310S 310S 310S 310S | EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| F310H TP310H 310H TP310H TP310H | S31009 S31009 S31009 S31009 S31009 | ASTM A-182 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 | Forging Seamless tube Plate Welded tube Smls. & welded pipe | 310H | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| TP310Cb 310Cb TP310Cb TP310Cb 310Cb TP310Cb 310Cb TP310Cb TP310Cb | S31040 S31040 S31040 S31040 S31040 S31040 S31040 S31040 S31040 | ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 | Seamless tube Plate Welded tube Smls. & welded pipe Fusion welded pipe Welded pipe Bar Welded pipe Cold worked pipe | 310Cb | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| TP310HCb 310HCb TP310HCb TP310HCb | S31041 S31041 S31041 S31041 | ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 | Seamless tube Plate Welded tube Smls. & welded pipe | 310HCb | ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| TP310HCbN | S31042 | ASTM A-213 | Seamless tube | 310HCbN | ASME BPVC |
| X1CrNiMoN25-22-2 X1CrNiMoN25-22-2 F310MoLN TP310MoLN 310MoLN TP310MoLN TP310MoLN | 1.4466 1.4466 S31050 S31050 S31050 S31050 S31050 | EN 10028-7 EN 10216-5 ASTM A-182 ASTM A-213 ASTM A-240 ASTM A-249 ASTM A-312 | Plate Seamless tube Forging Seamless tube Plate Welded tube Smls. & welded pipe | – – 310MoLN 310MoLN 310MoLN 310MoLN 310MoLN | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| X1CrNiMoCuNW24-22-6 F58 – – | 1.4659 S31266 S31266 S31266 | – ASTM A-182 ASTM A-240 ASTM A-358 | – Forging Plate Fusion welded pipe | – | – ASME BPVC ASME BPVC ASME BPVC |
| X3CrNiMoBN17-13-2 | 1.4910 | EN 10028-7 | Plate | – | EN 13445-2 & EN 13480-2 |
| X5NiCrAlTi31-20 X5NiCrAlTi31-20 | 1.4958 1.4958 | EN 10028-7 EN 10216-5 | Plate Seamless tube | – | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 |
| X8NiCrAlTi32-21 X8NiCrAlTi32-21 | 1.4959 1.4959 | EN 10028-7 EN 10216-5 | Plate | . | EN 13445-2 & EN 13480-2 EN 13445-2 & EN 13480-2 |
| S31277 | S31277 | ASTM A-240 | Plate | INCOLOY® alloy 27-7MO | ASME BPVC |
| – – – | S31655 S31655 S31655 | ASTM A-240 ASTM A-249 ASTM A-358 | Plate Welded tube Fusion welded pipe | – | ASME BPVC ASME BPVC ASME BPVC |
| – – – – – – – – – – | S32053 S32053 S32053 S32053 S32053 S32053 S32053 S32053 S32053 S32053 | ASTM A-182 ASTM A-240 ASTM A-249 ASTM A-312 ASTM A-358 ASTM A-403 ASTM A-409 ASTM A-479 ASTM A-813 ASTM A-814 | Forging Plate Welded tube Smls. & welded pipe Fusion welded pipe Fitting Welded pipe Bar Welded pipe Cold worked weld. pipe | 320 | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| – | S32654 | ASTM A-240 | Plate | – | ASME BPVC |
| – N08367 – N08367 – – – – – – N08367 N08367 | N08367 N08367 N08367 N08367 N08367 N08367 N08367 N08367 N08367 N08367 N08367 N08367 | ASTM A-240 ASTM A-312 ASTM B-366 ASTM A-358 ASTM B-462 ASTM A-479 ASTM B-564 ASTM B-675 ASTM B-676 ASTM B-688 ASTM A-813 ASTM A-814 | Plate Smls. & welded pipe Fitting Fusion welded pipe Forging Bar Forging Welded pipe Welded tube Plate Welded pipe Cold worked weld. pipe | AL-6XN® Alloy AL6XN® | ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC ASME BPVC |
| CN7M | N08007 | ASTM A-351 | Casting | – | ASME BPVC |
| CPE20N CE20N | J92802 J92802 | ASTM A-451 ASTM A-351 | Centrif. casting Casting | – – | ASME BPVC ASME BPVC |
| HK30 | J94203 | ASTM A-351 | Casting | – | ASME BPVC |
| HK40 | J94204 | ASTM A-351 | Casting | – | ASME BPVC |
| CK3MCuN | J93254 | ASTM A-351 | Casting | – | ASME BPVC |
| CPH8 CH8 | J93400 J93400 | ASTM A-451 ASTM A-351 | Centrif. casting Casting | – – | ASME BPVC ASME BPVC |
| CH10 | J93401 | ASTM A-351 | Casting | – | ASME BPVC |
| CPH20 CPK20 CH20 | J93402 J93402 J93402 | ASTM A-451 ASTM A-451 ASTM A-351 | Centrif. casting Centrif. casting Casting | – – – | ASME BPVC ASME BPVC ASME BPVC |