1.1248 (Ck75)

Classification

Country Section Category
Germany Non-alloy Special Steels Structural Pressure Vessel and Engineering Steels with C > = 0,5%

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
EN 10132-4 97–98.55 0.15–0.35 0.6–0.9 < 0.4 < 0.4 < 0.025 0.7–0.8 < 0.025 < 0.1

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ $$\epsilon_{L (L_0 = 80 mm)}$$, % Treatment
0.3–3 annealing, soft 640 510 15
0.3–3 cold rolling 1170
0.3–3 moderate hardening 1200–1900

Твёрдость по Викерсу

Rolling Standard Classifiers Value, HV
annealing, soft 200
cold rolling 320
moderate hardening 370–580

Standards

Standard Description
EN 10132-4

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
$$\sigma_{0.2}$$ $$MPa$$ 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)