Sheet metal blank thickness 175 mm 1.0503 - C45 - 12 050

Standard: EN 10083-2
Material number (EN): 1.0503
Designation (EN): C45E / C45
Designation (DIN): Ck45

Chemical composition (%, approx.)

• C: 0.42 – 0.50

• Si: <= 0.40

• Mn: 0.50 – 0.80

• P: <= 0.045

• S: <= 0.045

• Cr, Ni, Mo: trace amounts

Mechanical properties (normalized condition)

• Tensile strength (Rm): 600 – 800 MPa

• Yield strength (Re): 355 – 500 MPa

• Hardness: 170 – 210 HB

• Hardness after quenching & tempering: up to 50 HRC

Characteristics

• Good machinability in annealed condition

• Limited weldability (preheating and post-weld heat treatment required)

• Suitable for heat treatment – quenching, tempering, case hardening

• Higher strength and wear resistance compared to mild structural steels (S235, S355)

Typical applications

• Shafts, axles, spindles

• Gears, couplings, mechanical components

• Piston rods, bolts, studs, tie rods

• Stressed parts under dynamic loading