CHVG45

parts operating under high mechanical loads, in terms of friction, wear, and gidrokavitatsii at variable loads, elevated temperature cycling

Classification

Country Section Category
CIS, Russia, Ukraine Cast iron Vermicular Graphite Cast Iron

Chemical composition

Standard Fe, % Si, % Mg, % Mn, % Cr, % Cu, % Ni, % РЗЭ, % P, % C, % S, % Mo, %
GOST 28394-89 89.597–92.18 2–2.5 0.02–0.028 0.8–1.2 < 0.3 0.8–1 0.8–1.2 0.1–0.2 < 0.05 3.1–3.5 < 0.025 0.2–0.4

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 155 39 7300
100 13

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Castings GOST 28394-89 450 380 0.8

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 28394-89 190–250

Standards

Standard Description
GOST 28394-89

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mg % Magnesium
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
РЗЭ % Rare earth elements
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)