Designation
| Name |
The value |
| Designation GOST Cyrillic |
03Н12Х5М3ТЮЛ |
| Designation GOST Latin |
03H12X5M3TJuL |
| Transliteration |
03N12H5M3TYuL |
| By chemical elements |
03Н12Cr5Mo3TiAl |
Description
03N12KH5M3TJUL steel is used: for the manufacture of castings of highly loaded parts for critical applications with wall thickness up to 200 mm.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Al |
Ti |
Mo |
| GOST 977-88 |
0.01-0.04 |
≤0.015 |
≤0.015 |
≤0.2 |
4.5-5 |
≤0.2 |
12-12.5 |
Rest |
0.25-0.45 |
0.7-0.9 |
2.5-3 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Casting. Homogenization at 1180-1200 °C + quenched in air from 1000 °C + aging at 500 °C, air cooling |
| 100 |
≥1422 |
≥1472 |
≥8 |
≥35 |
≥294 |
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 |