High-alloy steel – heat and creep resistant chromium-nickel-silicon steel H25N20S2 PN-71/H-86022
| Steel grade | Standard | Chemical composition (%) | |||||||||
| C | Mn | Si | P | S | Cu | Cr | Ni | Mo | other | ||
| H25N20S2 | PN | max0,20 | max1,50 | 2,003,00 | max 0,045 | max 0,030 | max 0,30 | 24,0027,00 | 18,00 21,00 | max 0,50 | W max 0,50 V max 0,20 |
| 20H25N20S220KH25N20S220Ch25N20S220X25N20C2 | GOST | max0,20 | max1,50 | 2,003,00 | max 0,035 | max 0,020 | max 0,30 | 24,0027,00 | 18,00 21,00 | max 0,30 | W max 0,20 V max 0,20T max 0,50 |
| X 15 CrNiSi 25-20X15CrNiSi25-20X15CrNiSi2520 1.4841 | DIN W.nr | max0,20 | max2,00 | 1,502,50 | max 0,045 | max 0,015 | - | 24,00 26,00 | 19,00 22,00 | - | N max 0,11 |
| X8CrNi25-211.4845 X 12 CrNi 25-21X12CrNi25-21X12CrNI2521 1.4845 | EN DIN W.nr | max0,10 | max2,00 | max1,50 | max 0,045 | max 0,015 | - | 24,00 26,00 | 19,00 22,00 | - | N max 0,11 |
| Z 15 CNS 25-20Z15CNS20-25Z15CNS2025 | AFNOR | max0,15 | max2,00 | 1,502,50 | max 0,040 | max 0,015 | - | 24,00 26,00 | 19,00 21,00 | - | - |
| H 10H10 | MSZ | max0,20 | max1,50 | 2,003,00 | max 0,040 | max 0,030 | max 0,030 | 24,0027,00 | 18,00 21,00 | - | - |
| X 16 CrNiSi 25 20X16CrNiSi2520 | UNI | max0,20 | max2,00 | 1,502,50 | max 0,045 | max 0,030 | - | 24,00 26,00 | 19,00 22,00 | - | - |
| S 31400 S31400 314 | UNS AISI | max 0,25 | max2,00 | 1,503,00 | max 0,045 | max 0,030 | - | 23,00 26,00 | 19,00 22,00 | - | - |
| S 31000 S31000 310 | UNS AISI | max 0,25 | max2,00 | max1,50 | max 0,045 | max 0,030 | - | 24,00 26,00 | 19,00 22,00 | - | - |
| 1Cr25Ni20Si2 | GB/T | max0,20 | max1,50 | 1,502,50 | max 0,035 | max 0,030 | - | 24,0027,00 | 18,00 21,00 | - | - |
| SUH 310SUH310 | JIS | max0,25 | max2,00 | max1,50 | max 0,040 | max 0,030 | - | 24,00 26,00 | 19,00 22,00 | - | - |
Austenitic steel used in the production of heavily loaded parts of the equipment working at high temperatures resistant to the
operation of nitriding, carburizing and carbo-nitriding atmosphere, little resistant to gases containing sulfur compounds.
Heat resistant in the air up to the temperature of 1150 o C, creep resistant to the temperature of about 700 o C.
