1.7244 (18CrMoS4)
Classification
Country |
Section |
Category |
Germany |
Structural, Pressure Vessel and Engineering Steels |
Cr-Mo with Mo < 0.35%, Cr-Mo-B |
Chemical composition
Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
P, % |
C, % |
S, % |
Mo, % |
|
96.975–98.18 |
< 0.4 |
0.6–0.9 |
0.9–1.2 |
< 0.025 |
0.15–0.21 |
0.02–0.04 |
0.15–0.25 |
Information on suppliers
Mechanical properties at 20 °C
Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\psi$$, % |
Treatment |
|
|
< 16 |
|
|
1100 |
57–62 |
|
|
|
|
|
annealing, carbide spheroidization |
550 |
|
|
Brinell hardness number
Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
annealing, soft |
207 |
|
|
specified strength |
156–207 |
|
|
specified strength, ferrite-pearlite composition |
140–187 |
Standards
Description of chemical elements
Element |
Units of measurement |
Description |
Fe |
% |
Iron |
Si |
% |
Silicon |
Mn |
% |
Manganese |
Cr |
% |
Chrome |
P |
% |
Phosphorus |
C |
% |
Carbon |
S |
% |
Sulfur |
Mo |
% |
Molybdenum |
Description of mechanical properties
Parameter |
Units of measurement |
Description |
$$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
$$\psi$$ |
% |
Reduction in cross section on fracture |