1.6747 (30NiCrMo16-6)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Ni-Mo with Mo <0.4% + 3.5% =< Ni < 5%, or Mo>= 0.4%

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
92.02–94.44 < 0.4 0.5–0.8 1.2–1.5 3.3–4.3 < 0.025 0.26–0.33 < 0.025 0.3–0.6

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % $$R_{eH}$$, $$MPa$$ $$\psi$$, % Treatment
< 16 moderate hardening 1080–1230 10 880 45
16–40 moderate hardening 1080–1230 10 880 45
40–100 moderate hardening 1080–1230 10 880 45
100–160 moderate hardening 900–1050 11 790 50
160–250 moderate hardening 900–1050 11 880 50

Brinell hardness number

Rolling Standard Classifiers Value, HBW
annealing, soft 270

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
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$ % Elongation at break (longitudinal) (for L0 = 5.65√So)
$$R_{eH}$$ $$MPa$$ Upper yield point
$$\psi$$ % Reduction in cross section on fracture