Designation
| Name |
The value |
| Designation GOST Cyrillic |
31Н8Х |
| Designation GOST Latin |
31H8X |
| Transliteration |
31N8H |
| By chemical elements |
31Ni8Cr |
Description
Alloy 31Н8Х used: for the production of strips and sheets cold-rolled, forged bars, used in the manufacture of magnetic shunts, parts, temperature relay and sensor heating.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В30 |
TU 14-1-4478-88 |
Chemical composition
| Standard |
C |
S |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Ca |
Mg |
| TU 14-1-4478-88 |
≤0.05 |
≤0.02 |
0.2-0.4 |
7.4-8.2 |
≤0.18 |
30.5-31.8 |
Rest |
≤0.05 |
≤0.05 |
≤0.025 |
≤0.05 |
Fe is the basis.
Technological properties
| Name |
The value |
| Features of heat treatment |
Recommended heat treatment after the fabrication of parts or specimens for magnetic tests: annealing in vacuum not worse than 10-3 mm of mercury.St. at a temperature of 900 °C with exposure for 2 hours, cooled to 600-650 °C with a speed of 80-120 °C/hour, up to 300-350 °C, at a speed of 30-70 °C/hour, up to 100-150 °C with the switched off oven, then in air. |
