30HGSFL

gear, gears, and other parts of mechanical engineering.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % V, % P, % C, % S, %
GOST 977-88 96.83–97.99 0.4–0.6 1–1.5 0.3–0.5 0.06–0.12 < 0.05 0.25–0.35 < 0.05

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 < 100 589 392 15 25 343 Normalization of 900-930 ° C, 600-650 ° C and Holidays
Castings GOST 977-88 785 589 14 25 441 Tempering 900-920 ° C, 630-670 ° C and Holidays

Heat Treatment Modes

Treatment
Normalization 900 - 930 ° C, Vacation 600 - 650 ° C
Tempering 900 - 920 ° C, Vacation 630 - 670 ° C

Standards

Standard Description
GOST 977-88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
V % Vanadium
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