Designation
| Name |
The value |
| Designation GOST Cyrillic |
15ХГСМЛ |
| Designation GOST Latin |
15XGCML |
| Transliteration |
15HGSML |
| By chemical elements |
15CrMnСMo |
Description
15ХГСМЛ steel is used: for the manufacture of the 1st, 2nd and 3rd groups casting parts of pipe fittings in North version with the testing of impact toughness KCU-60≥500 kJ/m2 (5,0 kgf·m/cm2) operating at temperatures of the working medium from -60 up to +400 °C without limitations nominal operating pressure.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
OST 26-07-402-83, ST ЦКБА 014-2004 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
Mo |
| ST ЦКБА 014-2004 |
0.1-0.18 |
≤0.035 |
≤0.04 |
0.4-1.2 |
0.4-0.8 |
0.4-1.2 |
Rest |
0.15-0.3 |
Fe is the basis.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Casting parts of pipe fittings. Normalizing at 930-950 °C (extract 3 hrs.), air cooling + vacation at 680 °C (extract 3 hours), air cooling KCU+20/-60 |
| ≥300 |
≥450 |
≥25 |
≥50 |
≥1000/500 |
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 |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
