Designation
| Name |
The value |
| Designation GOST Cyrillic |
26ХМА |
| Designation GOST Latin |
26XMA |
| Transliteration |
26HMA |
| By chemical elements |
26CrMo |
| Name |
The value |
| Designation GOST Cyrillic |
26ХМ |
| Designation GOST Latin |
26XM |
| Transliteration |
26HM |
| By chemical elements |
26CrMo |
| Name |
The value |
| Designation GOST Cyrillic |
25ХМ |
| Designation GOST Latin |
25XM |
| Transliteration |
25HM |
| By chemical elements |
25CrMo |
Description
26ХМА steel is used: for the manufacture of solid-rolled rings for different purposes, gears, shafts, axles, pins, nuts, bolts and various other parts operating at temperatures up to +450−500 °C; of billets used for the production of pipes and rolled sections.
Note
Structural steel high-quality chrome-molybdenum.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В32 |
OST 1 92049-76 |
| Blanks. Of the workpiece. Slabs |
В31 |
TU 14-1-4944-90 |
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Rings forged of steel 25ХМ for OST 1 92049-76. Quenching in water from 860-900 °C + Vacation at 560-600 °C, air cooling |
| 15 |
≥460 |
≥660 |
≥11 |
≥32 |
≥441 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
