30HGFRL

gears, gear units.

Classification

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

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Cu, % Ni, % V, % P, % C, % S, %
TU 24.00.001 - 0 96.106–98.17 0.2–0.6 < 0.004 0.8–1.25 0.5–0.9 < 0.3 < 0.3 0.05–0.1 < 0.04 0.28–0.36 < 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 < 100 700 500 12 25 400 Tempering 900-920 ° C, 650-670 ° C and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy Hardening, average vacation 196–255

Casting and technological parameters

linear shrinkage, %
1.5–2

Technological Properties

Propensity to temper brittleness
inclined

Critical point temperatures

Ac1, K Ac3(Acm), K Ar3(Arcm), K Ar1, K Mn, K
750–760 845–855 720–855 425–675 320–370

Standards

Standard Description
TU 24.00.001 - 0

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Cu % Copper
Ni % Nickel
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

Description of the casting and technological parameters

Parameter Units of measurement Description
linear shrinkage % The difference between model dimensions and the model casting

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K
Ar3(Arcm) K
Ar1 K
Mn K