30GL

for the manufacture of cast billets for the tool; buildings absorbing devices wagons.

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 97.4–98.15 0.2–0.5 1.4–1.7 < 0.04 0.25–0.32 < 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 977-88 579 334 20 25 206 Normalization
Castings GOST 977-88 628 481 16 20 235 Hardening and tempering
Castings GOST 21357-87 660 490 10 20 Tempering 920-950 ° C, the water, leave 600-650 ° C

Heat Treatment Modes

Treatment
Normalization 860 - 890 ° C, Vacation 550 - 650 ° C
Tempering 840 - 860 ° C, Vacation 570 - 610 ° C

Analogues

Germany USA
30 Mn 5 1330

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