Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Х18Н12С4Л |
| Designation GOST Latin |
15X18H12C4L |
| Transliteration |
15H18N12S4L |
| By chemical elements |
15Cr18Н12С4 |
Description
15Х18Н12С4Л steel is used: for the manufacture of shaped castings for the aviation industry.
Standards
| Name |
Code |
Standards |
| Castings with special properties (iron and steel) |
В83 |
OST 1 90090-79 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
Al |
V |
Ti |
Mo |
W |
| OST 1 90090-79 |
0.12-0.2 |
≤0.025 |
≤0.025 |
0.5-1 |
17-19 |
3.8-4.5 |
10-13 |
Rest |
≤0.3 |
≤0.05 |
≤0.1 |
≤0.05 |
≤0.05 |
≤0.2 |
≤0.2 |
Fe is the basis.
According to OST 1 90090-79 the chemical composition is given for steel grade 15H18N12S4L.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d |
KCU, kJ/m2 |
| The casting and the ceramic mold. Quenching in water with 1090-1110 °C |
| ≥314 |
≥667 |
≥20 |
≥392 |
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 |
| KCU |
Toughness |
