Designation
Name |
The value |
Designation GOST Cyrillic |
S-NiCr20-3 |
Designation GOST Latin |
S-NiCr20-3 |
Transliteration |
S-NiCr20-3 |
By chemical elements |
S-NiCr20-3 |
Description
Cast iron S-NiCr20−3 is used: for the manufacture of casting parts for pumps, valves, compressors, bushings, liners, turbochargers, exhaust piping.
Note
Nickel cast iron. Properties similar to Marche S-NiCr20−2, but more heat resistant and has better resistance to erosion.
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 |
2.5-3.5 |
1.5-3 |
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 |
390-490 |
7-15 |
150-225 |
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 |