42CrMo4 alloy steel round bars

42CrMo4 alloy steel round bars 1. size: dia60-380mm length:1500-6000mm 2. delivery status:black/grinded/machined

  42CrMo4 steel

1 Applications

This is one of the chromium, molybdenum, manganese low alloy steels noted for toughness, good torsional strength and good fatigue strength. Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. 

2 Physical properties (avarage values) at ambient temperatureModulus of elasticity [103 x N/mm2]: 190-210 Density [g/cm3]: 7.84

3 Chemical Composition (in weight %)

C	Si	Mn	Cr	Mo	Ni	V	W	Others
0.41	0.20	0.75	1.05	0.23	-	-	-	-

4 Soft AnnealingHeat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.5 HardeningHarden from a temperature of 820-850, 830-860oC followed by water or oil quenching.6 NormalizingNormalizing: 840-880oC7 TemperingTempering temperature: 540-680oC

8 ForgingHot forming temperature: 1050-850oC. 9 MachinabilityMachinability of this alloy is good in the annealed condition. In the heat treated and quenched condition machining is best limited to finish grinding. 10 Corrosion Resistance This alloy is a steel and is not corrosion resistant. Protective coating must be used in corrosive, or water, environments.

42CrMo4 alloy steel round bars