40HML

for producing castings for various industrial applications

Classification

Country Section Category
CIS, Russia, Ukraine Steels and alloys for castings Ordinary steel for castings

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, % Mo, %
GOST 977-88 96.67–97.92 0.2–0.5 0.5–0.8 0.8–1.2 < 0.04 0.38–0.45 < 0.04 0.2–0.3

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ d5, % Treatment
Castings GOST 977-88 628 334 25 206 14 Normalization 850 - 880 ° C, Vacation 550 - 650 ° C
Castings GOST 977-88 677 481 20 206 11 Tempering 830 - 860 ° C, Vacation 530 - 670 ° C

Heat Treatment Modes

Treatment
Normalization 850 - 880 ° C, Vacation 550 - 650 ° C
Tempering 830 - 860 ° C, Vacation 530 - 670 ° C

Analogues

Germany USA
ACROM 42 SC 4140

Standards

Standard Description
GOST 977-88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness