1.0727 (45S20)

Classification

Country Section Category
Germany Non-alloy Steels Steels with Higher P or S Content

Chemical composition

Standard Fe, % Si, % Mn, % P, % C, % S, %
97.69–98.73 < 0.4 0.7–1.1 < 0.06 0.42–0.5 0.15–0.25

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
moderate hardening 630–850 370–490 12–14
5–10 solid, cold drawn 740–980 570 5
10–16 solid, cold drawn 690–930 470 6
16–40 solid, cold drawn 640–880 400 7
40–63 solid, cold drawn 610–850 380 8
63–100 solid, cold drawn 580–820 340 8

Brinell hardness number

Rolling Standard Classifiers Value, HBW
rolling, turning 166–225

Technological Properties

Weldability
Difficult to weld

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
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
$$\epsilon_L$$ % Elongation at break (longitudinal)

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