Designation
| Name |
The value |
| Designation GOST Cyrillic |
20ГТЛ |
| Designation GOST Latin |
20GTL |
| Transliteration |
20GTL |
| By chemical elements |
20MnTi |
Description
20ГТЛ steel is used: for the manufacture of critical cast parts of automatic coupler and trucks of freight and passenger cars, electric and disulphoton and locomotives.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
TU 24.05.486-82 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Ti |
| TU 24.05.486-82 |
0.17-0.25 |
≤0.04 |
≤0.04 |
1-1.3 |
≤0.3 |
0.3-0.5 |
≤0.3 |
Rest |
≤0.3 |
0.01-0.03 |
Fe is the basis.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Casting parts well.d. composition. Normalizing or normalizing + vacation |
| 294-343 |
≥490 |
≥20 |
≥30 |
≥490 |
| ≥343 |
≥510 |
≥18 |
≥25 |
≥490 |
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 |
