Cast iron CHVG45
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ЧВГ45 |
| Designation GOST Latin |
ChBG45 |
| Transliteration |
ChVG45 |
| The chemical elements |
- |
Description
Cast iron CHVG45 used: for the manufacture of parts operating under significant mechanical stress, in conditions of friction, wear, hidrocapital, and in case of high cyclic thermal loads; buildings helical gears; pistons and liners of internal combustion engines (ice); the housings of the hydraulic equipment of high pressure; the eccentric gears.
Standards
| Name |
Code |
Standards |
| Cast iron |
В11 |
GOST 28394-89 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
Cu |
Mg |
| GOST 28394-89 |
3.1-3.5 |
≤0.025 |
≤0.05 |
0.8-1.2 |
≤0.3 |
2-2.5 |
The rest |
0.8-1 |
0.02-0.028 |
Fe is the basis.
According to GOST 28394-89, the chemical composition is given for pig iron grade ЧVG45. The residual content of the sum of rare-earth elements (REM) in cast iron should be in the range of 0.10-0.20%. For the production of wear-resistant and heat-resistant pearlitic HRG, it is permissible to alloy cast iron of the grade ЧVG45 with nickel 0,80-1,20% and molybdenum 0,20-0,40%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d |
Brinell hardness number, MPa |
| Cast iron in the cast state or after heat treatment in the state of delivery according to GOST 28394-89 |
|
≥380 |
≥450 |
≥0.8 |
190-250 |
| Given the influence of the wall thickness of the casting on the mechanical properties of CGI according to GOST 28394-89 |
| 10 |
- |
≥450 |
≥3.8 |
≥190 |
| 100 |
- |
≥350 |
≥2.5 |
≥160 |
| 20 |
- |
≥420 |
≥3.5 |
≥180 |
| 30 |
- |
≥400 |
≥3 |
≥170 |
| 50 |
- |
≥380 |
≥2.8 |
≥160 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
140-170 |
7300 |
37-41 |
- |
| 100 |
- |
- |
- |
12-14 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
