1.6659 (31NiCrMo13-4)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Ni-Mo with Mo < 0.4% + 2.0% =< Ni < 3.5%

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
WW 93.5–95.07 0.15–0.4 0.4–0.7 0.9–1.2 3–3.5 < 0.025 0.28–0.35 < 0.025 0.2–0.3

Information on suppliers

Standards

Standard Description
WW

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