Cast iron СЧ20ХН2
Designation
| Name |
The value |
| Designation GOST Cyrillic |
СЧ20ХН2 |
| Designation GOST Latin |
CCh20XH2 |
| Transliteration |
SCh20HN2 |
| The chemical elements |
- |
Description
Cast iron СЧ20ХН2 used: for the production of castings with the lowest allowable wall thickness of 15 mm corrosion resistant parts operating in the gas and alkaline environments (soda boilers, pereraspredelitel and other details).
Note
Corrosion resistant grey cast iron with Ni and CR.
Standards
| Name |
Code |
Standards |
| Cast iron |
В11 |
STP М319-95 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
| STP М319-95 |
3.2-3.7 |
≤0.15 |
≤0.2 |
0.4-0.9 |
0.4-0.7 |
1.5-2.3 |
1.8-2.5 |
The rest |
Fe is the basis.
Mechanical characteristics
| σB, MPa |
Brinell hardness number, MPa |
| Castings in cast or heat treated condition for STP М319-95 |
| ≥200 |
170-241 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
Technological properties
| Name |
The value |
| Microstructure |
Pearlitic perlito-ferritic. Graphite plate. |