30HNML

responsible loaded parts, which are requirements of high strength and toughness sufficient working under the influence of static and dynamic loads at temperatures up to 400 degrees.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
GOST 977-88 94.77–96.35 0.2–0.4 0.4–0.9 1.3–1.6 1.3–1.6 < 0.04 0.25–0.35 < 0.04 0.2–0.3

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 977-88 687 540 12 20 294 Normalization of 860-880 ° C, 600-650 ° C and Holidays
Castings GOST 977-88 785 638 10 20 392 Tempering 860-870 ° C, 600-650 ° C and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy 206–255
Alloy Hardening, average vacation 217–269

Heat Treatment Modes

Treatment
Normalization 860 - 880 ° C, Release 600 - 650 ° C
Tempering 860 - 870 ° C, Release 600 - 650 ° C

Analogues

USA Germany
J23015 1.6582 (34CrNiMo6)

Standards

Standard Description
GOST 977-88

Description of chemical elements

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

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