1.5535 (23MnB4)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels B, Mn-B Mn < 1.65%

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Cu, % P, % C, % S, %
EN 10263-4 97.645–98.8992 < 0.3 0.0008–0.005 0.9–1.2 < 0.3 < 0.25 < 0.025 0.2–0.25 < 0.025

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\psi$$, % Treatment
500–700 55–66

Standards

Standard Description
EN 10263-4

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\psi$$ % Reduction in cross section on fracture