1.5120 (38MnSi4)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Mn-Si, Mn-Cr

Chemical composition

Standard Fe, % Si, % Mn, % P, % C, % S, %
97.41–98.06 0.7–0.9 0.9–1.2 < 0.035 0.34–0.42 < 0.035

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KU$$, $$J$$ Treatment
< 16 930–1130 > 785 < 11 < 35 < 15 After hardening and tempering
17–40 830–1030 > 635 < 12 < 40 < 20 After hardening and tempering
41–100 740–880 > 560 < 13 < 45 < 30 After hardening and tempering
101–160 640–740 > 440 < 14 < 50 < 35 After hardening and tempering

Brinell hardness number

Rolling Standard Classifiers Value, HBW
soft, annealing < 217

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture
$$KU$$ $$J$$ Impact energy