1.0557 (P355NB)

Classification

Country Section Category
Germany Non-alloy Steels Steels with Average 0,25% =< C < 0,55% or 500 MPa =< Rm < 700 MPa

Chemical composition

Standard Fe, % Si, % Mn, % Ti, % Al, % P, % C, % S, % Nb, % N, %
EN 10120 > 98.451 < 0.5 < 0.7 < 0.03 < 0.02 < 0.025 < 0.2 < 0.015 < 0.05 < 0.009

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ $$\epsilon_L$$, % $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % Treatment
normalization 510–620 355
< 3 normalization 19
3–5 normalization 24

Standards

Standard Description
EN 10120

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Ti % Titan
Al % Aluminium
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium
N % Nitrogen

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)
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$ % Elongation at break (longitudinal) (for L0 = 5.65√So)