BS EN 42CrMo4
BS EN 42CrMo4
BS EN 42CrMo4
BS EN 42CrMo4
BS EN 42CrMo4

BS EN 42CrMo4

Chemical composition Carbon C: 0.38 ~ 0.45% Silicon Si: ≤0.40% Manganese Mn: 0.60 ~ 0.90% Sulfur S: Allowable residual content ≤0.035% P: Allowable residual content ≤0.035% Chromium Cr: 0.90 ~ 1.20% Molybdenum Mo: 0.15 ~ 0.30%

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Product Introduction

BS EN 42CrMo4

BS EN 42CrMo4 is a high tensile steel with good wear and impact resistance. This versatile steel is suitable for a range of applications including gears, shafts, axles, and studs. It is widely used in the automotive and engineering industries.

Despite its hardness and strength, BS EN 42CrMo4 can be easily machined and welded. Its high degree of toughness also makes it highly resistant to fatigue and stress.

Can 42CrMo4 steel be carburized?

42CrMo4 steel can be carburized, but it is not necessary. The average carbon content of 42CrMo4 is 0.42%, and as an alloy structural steel, it is suitable for tempering treatment to obtain good comprehensive mechanical properties.

Chemical Properties

C	Cr	Mn	Si	Mo	S	P
0.38-.43%	0.80-1.10%	0.75-1.0%	0.15-0.30%	0.15-0.25%	0-0.040%	0-0.035%

Mechanical Properties

Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	60200 psi
Bulk modulus (typical for steel)	140 GPa	20300 ksi
Shear modulus (typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elongation at break (in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop (converted from Brinell hardness)	219	219
Hardness, Rockwell B (converted from Brinell hardness)	92	92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinability)	65	65