25H2GNMFL

Responsible destination details to the wall thickness of 50 mm, operating under 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, % Cr, % Ni, % V, % P, % C, % S, % Mo, %
GOST 977-88 94.25–96.84 0.3–0.7 0.7–1.1 1.4–2 0.3–0.9 0.04–0.2 < 0.025 0.22–0.3 < 0.025 0.2–0.5

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 977-88 638 491 30 589 12 Final processing - Hardening 880 - 920 ° C, Release 630 - 700 ° C
Castings GOST 977-88 1275 1079 25 392 5 Final processing - Hardening 900 - 950 ° C, Vacation 260 - 300 ° C

Heat Treatment Modes

Treatment
Pre-treatment - Normalization 900 - 950 ° C, Release 650 - 700 ° C
Final processing - Hardening 880 - 920 ° C, Release 630 - 700 ° C
Pretreatment - Normalization 900 - 950 ° C, Release 660 - 680 ° C
Final processing - Hardening 900 - 950 ° C, Vacation 260 - 300 ° C

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
V % Vanadium
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