1.7225

High-carbon steel

Material No.	1.7225
US standard (AISI)	4137, 4140
Abbreviation	42CrMo4
Old designation
Description	Carbon steel
Composition Alloy constituents [%]	C: 0.38 – 0.45 Si: ≤ 0.40 Mn: 0.60 – 0.90 P: ≤ 0.025 S: ≤ 0.035 Cr: 0.90 – 1.20 Mo: 0.15 – 0.30
Density [g/cm³]	7.9
Yield point Rp0.2 / Re[N/mm²]	>= 650
Tensile strength Rm [N/mm²]	900 – 1100
Elongation after fracture A [%]	>= 12
Machinability	Good
Weldability	Unsuitable
Heat treatment	Possible
Other properties
Main uses	Levelling sets, studs, spherical levelling washer, connecting rods, crankshafts, gear shafts, pinions, gear wheels

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.