1.7258 (24CrMo5)

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, % Ni, % P, % C, % S, % Mo, %
SEW550 96.3–98.2 < 0.4 0.5–0.8 0.9–1.2 < 0.6 < 0.035 0.2–0.28 < 0.035 0.2–0.35

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \sigma_{Y}, MPa \epsilon_L, % KU, J Treatment
590–740 > 440 < 18 > 103 After quenching and tempering or tempering

Standards

Standard Description
SEW550

Description of chemical elements

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

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)
KU J Impact energy