Designation
| Name |
The value |
| Designation GOST Cyrillic |
40Г1 |
| Designation GOST Latin |
40G1 |
| Transliteration |
40G1 |
| By chemical elements |
40Mn1 |
Description
Steel 40G1 is used: for the manufacture of castings to various industrial purpose.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Si |
Fe |
V |
| GOST 977-88 |
0.35-0.45 |
≤0.04 |
≤0.04 |
1.6-1.9 |
0.2-0.5 |
Rest |
0.1-0.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Hardening in air, 860-870 °C + vacation at 640-660 °C, air cooling |
| 100 |
≥520 |
≥819 |
≥8 |
≥20 |
≥285 |
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 |