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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.

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