Designation
| Name |
The value |
| Designation GOST Cyrillic |
S-NiSiCr20-5-2 |
| Designation GOST Latin |
S-NiSiCr20-5-2 |
| Transliteration |
S-NiSiCr20-5-2 |
| By chemical elements |
S-NiSiCr20-5-2 |
Description
Cast iron S-NiSiCr20−5-2 is used: for the manufacture of casting parts of valves, pumps, castings used in industrial furnaces that are subject to high mechanical stress.
Note
Nickel cast iron. Has good corrosion resistance even in diluted sulphuric acid, good heat resistance.
Standards
| Name |
Code |
Standards |
| Castings with special properties (iron and steel) |
В83 |
GOST 7769-82 |
Chemical composition
| Standard |
C |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 7769-82 |
≤3 |
≤0.08 |
0.5-1.5 |
1-2.5 |
4.5-5.5 |
18-22 |
Rest |
≤0.5 |
Fe is the basis.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d4 |
HB, MPa |
| Castings on OST 1 90077-72 |
| 210-260 |
370-430 |
10-18 |
180-230 |
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 |
| d4 |
Elongation after rupture |
| HB |
Brinell hardness number |
Physical characteristics
| Temperature |
Е, HPa |
| 20 |
112-133 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| a |
The coefficient of linear expansion |