Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Х2ГН2ТРА |
| Designation GOST Latin |
15X2GH2TPA |
| Transliteration |
15H2GN2TRA |
| By chemical elements |
15Cr2MnН2TiB |
Description
15Х2ГН2ТРА steel is used: for the manufacture of critical parts, which are requirements of high strength, toughness and wear resistance, and for parts exposed to high vibration and dynamic loads after the carburizing and improvements; for the manufacture of parts of pipelines with quenching in oil and tempering in oil or air. Steel can be used at temperatures from -70 °C to +450 °C.
Note
Alloy structural steel high quality.
Standards
| Name |
Code |
Standards |
| Blanks. Of the workpiece. Slabs |
В31 |
TU 1-92-156-90 |
| Bars and shapes |
В32 |
TU 14-1-950-74, TU 14-1-3238-81, TU 14-1-3238-2006 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Ti |
Mo |
W |
| TU 14-1-3238-81 |
0.12-0.18 |
≤0.025 |
≤0.025 |
0.7-1 |
1.4-1.8 |
0.17-0.37 |
1.4-1.8 |
Rest |
- |
- |
0.002-0.005 |
0.03-0.09 |
- |
- |
| TU 14-1-950-74 |
0.12-0.18 |
≤0.025 |
≤0.025 |
0.7-1 |
1.4-1.8 |
0.17-0.37 |
1.4-1.8 |
Rest |
≤0.25 |
≤0.05 |
0.002-0.005 |
0.02-0.06 |
≤0.15 |
≤0.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Bars and strip, hot-rolled, forged, kalibrovochnye with special surface finish. Quenching in oil with 800-860 °C + vacation at 150-180 °C air cooling or oil |
|
≥885 |
≥1030 |
≥12 |
≥55 |
≥981 |
311-376 |
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 |
| HB |
Brinell hardness number |
