1.7038 (37CrS4)

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, %
EN 10083-1 97.025–98.14 < 0.4 0.6–0.9 0.9–1.2 < 0.025 0.34–0.41 0.02–0.04

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % $$R_{eH}$$, $$MPa$$ $$\psi$$, % Treatment
< 16 moderate hardening 950–1150 11 750 35
16–40 moderate hardening 850–1000 13 630 40
40–100 moderate hardening 750–900 14 510 40

Brinell hardness number

Rolling Standard Classifiers Value, HBW
improved machinability 255
annealing, soft 235

Standards

Standard Description
EN 10083-1

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$ % Elongation at break (longitudinal) (for L0 = 5.65√So)
$$R_{eH}$$ $$MPa$$ Upper yield point
$$\psi$$ % Reduction in cross section on fracture