1.7003 (38Cr2)

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, %
97.72–98.75 < 0.4 0.5–0.8 0.4–0.6 < 0.025 0.35–0.42 < 0.035

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % $$R_{eH}$$, $$MPa$$ $$\psi$$, % $$KV_{L}$$, $$J$$ Treatment
< 16 moderate hardening 800–950 14 550 35 35
16–40 moderate hardening 700–850 15 450 40
40–100 moderate hardening 600–750 17 350 45
annealing, carbide spheroidization 600 60

Brinell hardness number

Rolling Standard Classifiers Value, HBW
improved machinability 255
annealing, soft 207

Standards

Standard Description
EN 10083-1
EN 10250-3

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
$$KV_{L}$$ $$J$$ Impact energy (longitudinal)