A40G

Sulfur-manganese steel.

Parts of complex shape are processed on the machines, vending machines, and parts, which are increased requirements for cleanliness, surface running at higher voltages and pressures: the axis of the rollers, bushings, rings, gears, fingers, screws, bolts, nuts, screw shafts.

Classification

Country Section Category
CIS, Russia, Ukraine Structural steel Improved machinability structural steel

Chemical composition

Standard Fe, % Si, % Mn, % Cu, % P, % C, % S, %
GOST 1414-75 97.05–98.1 0.15–0.35 1.2–1.55 < 0.25 < 0.05 0.37–0.45 0.18–0.3

Information on suppliers

Physical characteristics

Temperature, °C $$\rho$$, $$\frac{kg}{m^3}$$
20 7820

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\psi$$, % d5, % Treatment
Rental hot rolled. GOST 1414-75 hot rolling 590 20 14
Rental calibrated. GOST 1414-75 annealing 590 17 Annealing

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Rental hot rolled. GOST 1414-75 hot rolling 207
Rental calibrated. GOST 1414-75 annealing, calibrated 229

Technological Properties

Flake Susceptibility Propensity to temper brittleness
sensitive inclined

Critical point temperatures

Ac1, K Ac3(Acm), K
730 830

Analogues

USA Germany European Union Bulgaria
G11460 44SMn28 1.0762 A45

Standards

Standard Description
GOST 1414-75

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cu % Copper
P % Phosphorus
C % Carbon
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\psi$$ % Reduction in cross section on fracture

Description of temperatures of critical points

Parameter Units of measurement Description
Ac1 K
Ac3(Acm) K