1.7131 (16MnCr5)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Cr-Si, Cr-Mn, Cr-Mn-B, Cr-Si-Mn

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % P, % C, % S, %
96.95–98.06 < 0.4 1–1.3 0.8–1.1 < 0.025 0.14–0.19 < 0.035

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ $$\epsilon_{L (L_0 = 80 mm)}$$, % $$\psi$$, % Treatment
< 16 1000 62–64
annealing, soft 550 420 21

Brinell hardness number

Rolling Standard Classifiers Value, HBW
annealing, soft 207
specified strength 156–207
specified strength, ferrite-pearlite composition 140–187
normalization 138–187

Твёрдость по Роквеллу

Rolling Standard Classifiers Value, HRC
annealing, soft 84

Твёрдость по Викерсу

Rolling Standard Classifiers Value, HV
annealing, soft 170

Technological Properties

Weldability
no limits

Standards

Standard Description
EN 10084
EN 10132-2

Description of chemical elements

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

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma_{0.2}$$ $$MPa$$ Tensile stress required to produce a total elongation of 0.2%
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_{L (L_0 = 80 mm)}$$ % Elongation at break (longitudinal) (for L0 = 80 mm)
$$\psi$$ % Reduction in cross section on fracture

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures