Designation
| Name |
The value |
| Designation GOST Cyrillic |
1Х2М1 |
| Designation GOST Latin |
1X2M1 |
| Transliteration |
1H2M1 |
| By chemical elements |
1Cr2Mo1 |
Description
1KH2M1 steel is used: for the production of two-layer sheet steel; seamless pipes for petroleum refining and petrochemical industries.
Standards
| Name |
Code |
Standards |
| Steel pipes and fittings to them |
В62 |
GOST 550-75 |
| Blanks. Of the workpiece. Slabs |
В31 |
TU 14-1-3111-81 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Mo |
| TU 14-1-3111-81 |
0.08-0.13 |
≤0.03 |
≤0.03 |
0.3-0.6 |
2-2.5 |
0.17-0.37 |
≤0.5 |
Rest |
≤0.3 |
0.9-1.1 |
| GOST 550-75 |
0.08-0.13 |
≤0.035 |
≤0.035 |
0.3-0.6 |
2-2.5 |
0.17-0.37 |
≤0.5 |
Rest |
≤0.3 |
0.9-1.1 |
Fe is the basis.
According to GOST 550-75 and TU 14-1-3111-81, the maximum deviations in chemical composition must meet the requirements of GOST 4543.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Tubular billet with a diameter of 90-150 mm on THAT 14-1-3111-81. Normalization at 920-950 °C + Vacation at 700-730 °C (aging of 1.0 h) (longitudinal samples) |
|
≥265 |
≥441 |
≥20 |
≥45 |
≥980 |
- |
| Seamless hot deformed tubes, heat-treated in the delivery condition according to GOST 550-75 |
|
≥265 |
≥441 |
≥20 |
≥45 |
≥980 |
≤227 |
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 |
Technological properties
| Name |
The value |
| Macrostructure and pollution |
The macrostructure and the contamination of non-metallic inclusions metal pipe blanks on the other 14-1-3111-81 must comply with the OST 14-21-77. |
