Designation
| Name |
The value |
| Designation GOST Cyrillic |
20ГНМЮЛ |
| Designation GOST Latin |
20GHMJuL |
| Transliteration |
20GNMYuL |
| By chemical elements |
20MnНMoAl |
Description
20GNMJUL steel 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 |
Ni |
Fe |
Al |
Mo |
| GOST 977-88 |
0.16-0.23 |
≤0.035 |
≤0.035 |
1.1-1.6 |
0.2-0.5 |
0.3-0.5 |
Rest |
≥0.01 |
0.15-0.3 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Normalization at 880-920 °C + vacation at 600-700 °C, air cooling |
| 100 |
≥343 |
≥500 |
≥18 |
≥30 |
≥491 |
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 |