20GL

wheels, sprockets and other jagged crowns. parts, which are requirements for strength and toughness, operating under the influence of static and dynamic loads

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % P, % C, % S, %
GOST 977-88 97.67–98.45 0.2–0.4 1.2–1.6 < 0.04 0.15–0.25 < 0.04

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Castings GOST 977-88 540 275 18 25 491 Normalization of 880-900 ° C, 600-650 ° C and Holidays
Castings GOST 977-88 530 334 14 25 383 Tempering 870-890 ° C, 620-650 ° C and Holidays
Castings GOST 21357-87 500 300 20 35 Normalization
Castings GOST 21357-87 550 400 15 30 Hardening and tempering

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy 1430–1870

Heat Treatment Modes

Treatment
Normalization 880 - 900 ° C, Release 600 - 650 ° C
Tempering 870 - 890 ° C, Vacation 620 - 650 ° C

Analogues

USA Germany
J02505 1.1131 (G17Mn5)

Standards

Standard Description
GOST 977-88

Description of chemical elements

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

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)
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness