Designation
| Name |
The value |
| Designation GOST Cyrillic |
12Х21Н5Г2СЛ |
| Designation GOST Latin |
12X21H5G2CL |
| Transliteration |
12H21N5G2SL |
| By chemical elements |
12Cr21Н5Mn2С |
Description
12KH21N5G2SL steel is used: for the manufacture of castings to various industrial purpose.
Note
Steel corrosion resistant austenitic-ferritic class. Steel corrosion in air, nitric acid, very dilute sulfuric acid and dilute or weak organic acids.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
| GOST 977-88 |
≤0.12 |
≤0.035 |
≤0.045 |
≤2 |
20-22 |
≤1.5 |
4.5-6 |
Rest |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
| Casting. Quenching in water or air from 1050-1100 °C |
| 100 |
≥343 |
≥549 |
≥22 |
≥20 |
≥590 |
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 |
