Cast Iron S-NiCr30-3
Designation
| Name |
The value |
| Designation GOST Cyrillic |
S-NiCr30-3 |
| Designation GOST Latin |
S-NiCr30-3 |
| Transliteration |
S-NiCr30-3 |
| The chemical elements |
S-NiCr30-3 |
Description
Cast iron S-NiCr30−3 is used: for the manufacture of castings, pumps, boilers, valves, parts of filtering devices, exhaust pipes, turbocharger housings.
Note
Nickel cast iron. It possesses properties similar to the properties of the brand L-NiCr30−3. Has a high creep resistance, adding 1% by weight of molybdenum.
Standards
| Name |
Code |
Standards |
| Castings with special properties (cast iron and steel) |
В83 |
GOST 7769-82 |
Chemical composition
| Standard |
C |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 7769-82 |
≤2.6 |
≤0.08 |
0.5-1.5 |
2.5-3.5 |
1.5-3 |
28-32 |
The rest |
≤0.5 |
Fe is the basis.
According to GOST 7769-82, a molybdenum content of 0.80-1.10% is allowed for a creep rate of less than 0.5 × 10 -4 % / h at 600 ° C and 40 MPa or 1.0 × 10 -4 % / h at 700 ° С and 30 MPa.
Mechanical characteristics
| sT|s0,2, MPa |
σB, MPa |
d4 |
Brinell hardness number, MPa |
| Castings on OST 1 90077-72 |
| 210-260 |
370-470 |
7-18 |
140-200 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d4 |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
| 20 |
92-105 |
A description of the physical symbols
| Name |
Description |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| a |
The coefficient of linear expansion |
