42CrMo4 round steel bar

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

  42CrMo4 round steel bar

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.

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Technical Process

steel scrap

smelting electric furnace

chemical components test

ingots

forging- 10 tons electro-hydraulic hammer

annealing & spheroidizing

band saw cutting

peeling & turning lathe for steel round bar

flaw detection

package- as customer required

delivery

shipping container

42CrMo4 round steel bar