1.7228 (50CrMo4)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Mo with Mo < 0.35%, Cr-Mo-B

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, % Mo, %
96.7–97.99 < 0.4 0.5–0.8 0.9–1.2 < 0.025 0.46–0.54 < 0.035 0.15–0.3

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % $$\epsilon_T$$, % $$R_{eH}$$, $$MPa$$ $$\psi$$, % Treatment
< 16 moderate hardening 1100–1300 9 9–11 900 40
16–40 moderate hardening 1000–1200 10 780 45
40–100 moderate hardening 900–1100 12 700 50
100–160 moderate hardening 850–1000 13 650 50
160–250 moderate hardening 750–950 13 550 50
250–330 moderate hardening 750
330–500 moderate hardening 700 490
< 160 moderate hardening 550
160–330 moderate hardening 540

Brinell hardness number

Rolling Standard Classifiers Value, HBW
annealing, soft 248

Analogues

CIS, Russia, Ukraine
50X

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
Mo % Molybdenum

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)
$$\epsilon_T$$ % Elongation at break (transverse)
$$R_{eH}$$ $$MPa$$ Upper yield point
$$\psi$$ % Reduction in cross section on fracture