Cast iron CHH1
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ЧХ1 |
| Designation GOST Latin |
ChX1 |
| Transliteration |
ChH1 |
| The chemical elements |
ZrCr1 |
Description
Cast iron CHH1 used: for the manufacture of castings with the lowest allowable wall thickness of 15 mm; for parts with high corrosion resistance to the gas, air and alkaline media in terms of friction and wear and heat-resistant in air and furnace gases to 500 °C (dampers, blast furnaces cooling plates on the sides and the grate sinter machines, parts of coke chemical equipment, serouglerod retorts, parts of gas turbine engines and compressors, burners and molds, glass molds, the exhaust manifolds of diesel engines).
Note
Heat-resistant low-alloy chromium cast iron.
Standards
| Name |
Code |
Standards |
| Castings with special properties (cast iron and steel) |
В83 |
GOST 7769-82 |
| Cast iron |
В11 |
STP М319-95 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
| GOST 7769-82 |
3-3.8 |
≤0.12 |
≤0.3 |
≤1 |
0.4-1 |
1.5-2.5 |
The rest |
| STP М319-95 |
3-3.8 |
≤0.12 |
≤0.3 |
≤1 |
0.4-1 |
1.5-2.5 |
The rest |
Fe is the basis.
According to GOST 7769-82, nickel content is allowed up to 1.0% or copper up to 1.50%, introduced by natural alloyed iron, alloyed with steel scrap or magnesium-containing ligature.
Mechanical characteristics
| σB, MPa |
Brinell hardness number, MPa |
| Castings on OST 1 90077-72 |
| ≥170 |
203-280 |
Description mechanical marks
| Name |
Description |
| σB |
Limit short-term strength |
Technological properties
| Name |
The value |
| Microstructure |
Pearlitic or pearlitic-sementina. Graphite plate. |
| Machining by cutting |
Mechanical treatment is difficult. |
