Designation
| Name |
The value |
| Designation GOST Cyrillic |
L-NiSiCr20-5-3 |
| Designation GOST Latin |
L-NiSiCr20-5-3 |
| Transliteration |
L-NiSiCr20-5-3 |
| By chemical elements |
L-NiSiCr20-5-3 |
Description
Cast iron L-NiSiCr20−5-3 is used: for the manufacture of casting pump parts; castings of valves used in industrial furnaces.
Note
Nickel cast iron. Cast iron L-NiSiCr20−5-3 has good corrosion resistance, even in conditions of dilute sulfuric acid. Cast iron L-NiSiCr20−5-3 are more heat resistant than cast iron grades L-NiCr20−2 and mark L-NiCr20−3.
Standards
| Name |
Code |
Standards |
| Castings with special properties (iron and steel) |
В83 |
GOST 7769-82 |
Chemical composition
| Standard |
C |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 7769-82 |
≤2.5 |
0.5-1.5 |
1.5-4.5 |
4.5-5.5 |
18-22 |
Rest |
≤0.5 |
Fe is the basis.
Mechanical properties
| σU, MPa |
d4 |
HB, MPa |
| Castings on OST 1 90077-72 |
| 190-280 |
2-3 |
140-250 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d4 |
Elongation after rupture |
| HB |
Brinell hardness number |
Physical characteristics
| Temperature |
Е, HPa |
| 20 |
110 |
A description of the physical symbols
| Name |
Description |
| l |
Coefficient of thermal conductivity |
| a |
The coefficient of linear expansion |