45FL

for mechanical engineering parts.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Ti, % V, % P, % C, % S, %
GOST 977-88 97.83–98.93 0.2–0.52 0.4–0.9 < 0.03 0.05–0.1 < 0.06 0.42–0.5 < 0.06

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 977-88 589 392 12 20 294 Tempering 880-900 ° C, 600-650 ° C and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy 170–229

Heat Treatment Modes

Treatment
Normalization 880 - 920 ° C, Release 600 - 650 ° C
Tempering 880 - 920 ° C, Release 600 - 650 ° C

Standards

Standard Description
GOST 977-88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Ti % Titan
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