Cast iron CHVG45

Designation

Name	The value
Designation GOST Cyrillic	ЧВГ45
Designation GOST Latin	ChBG45
Transliteration	ChVG45
By 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	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 properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d	HB, 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
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d	Elongation after rupture
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	a, 10^-6 1/°C
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