SUH31, 4Cr14Ni14W2Mo, 45KH14N14V2M, 45Х14Н14В2М, Heat Resisting Steel
Equivalent steels
| USA | Japan | France | England | Hungary | Poland | Czechia | China |
| – | JIS | AFNOR | BS | MSZ | PN | CSN | GB |
| S66009 | SUH31 | Z35CNWS14-14 | 331S42 | SZ8 | 4H14N14W2M | 17322 | 4Cr14Ni14W2Mo |
Chemical composition
| C | Si | Mn | Ni | S | P | Cr | Mo | W |
| 0.4 – 0.5 | max 0.8 | max 0.7 | 13 – 15 | max 0.02 | max 0.035 | 13 – 15 | 0.25 – 0.4 | 2 – 2.8 |
Mechanical properties under Т=20°С
| Assortment | sв | sT | d5 | y | Heat treatment |
| – | MPa | MPa | % | % | – |
| Bar, GOST 5949-75 | 710 | 315 | 20 | 35 | Drawing 810 – 830°С, air, |
Physical properties
| T | E 10– 5 | a 10 6 | l | r | C | R 10 9 |
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.08 | 14 | 8000 | 815 | ||
| 100 | 1.96 | 16 | 875 | |||
| 200 | 1.9 | 17 | 17 | 7930 | 945 | |
| 300 | 1.81 | 19 | 507 | 1000 | ||
| 400 | 1.73 | 18 | 20 | 7840 | 511 | 1055 |
| 500 | 1.66 | 21 | 523 | 1098 | ||
| 600 | 1.57 | 18 | 22 | 7760 | 528 | 1142 |
| 700 | 1.49 | 24 | 1172 | |||
| 800 | 1.41 | 19 | 7660 |
