1.7244 (18CrMoS4)

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, %
96.975–98.18 < 0.4 0.6–0.9 0.9–1.2 < 0.025 0.15–0.21 0.02–0.04 0.15–0.25

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\psi$$, % Treatment
< 16 1100 57–62
annealing, carbide spheroidization 550

Brinell hardness number

Rolling Standard Classifiers Value, HBW
annealing, soft 207
specified strength 156–207
specified strength, ferrite-pearlite composition 140–187

Standards

Standard Description
EN 10084
EN 10263-3

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
$$\psi$$ % Reduction in cross section on fracture