1.0503 / 1.0503.07

High-carbon steel

Material No.	1.0503 / 1.0503.07
US standard (AISI)	1045, 1043 / --
Abbreviation	C45 / C45 K
Old designation
Description	Carbon steel
Composition Alloy constituents [%]	C: 0.42 – 0.50 Si: ≤ 0.40 Mn: 0.50 – 0.80 P: ≤ 0.045 S: ≤ 0.045 Cr: ≤ 0.40 Mo: ≤ 0.10 Ni: ≤ 0.40
Density [g/cm³]	7.85
Yield point Rp0.2 / Re[N/mm²]	>= 275
Tensile strength Rm [N/mm²]	>= 560
Elongation after fracture A [%]	>= 16
Machinability	Good
Weldability	Unsuitable
Heat treatment	Possible
Other properties
Main uses	Stops, base rails, stops with positive down force, cam action indexing plungers, clamp straps, hook clamp holders

This information is for reference only; we do not assume any liability for its accuracy. The properties of steel materials are highly dependent on their thermal and/or mechanical treatment.