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Material Name

Alloy steel 4140 | 1.7225 | EN19 | 42CrMo4

Material Type

Metal

Process Compatibility

CNC machining

Property Value
Mechanical Properties
Ultimate tensile strength 355 – 370 MPa
Yield strength 230 MPa
Young’s modulus (modulus of elasticity) 208 – 216 GPa
Elongation at break 18 – 26 %
Physical Properties
Corrosion resistance Moderate to Poor
Magnetism Semi-Magnetic
UV resistance Excellent
Weldability Moderate
Thermal Properties
Maximum service temperature 613 – 650 °C
Thermal expansion coefficient 11.5 – 13.5 × 10-6/ºC
Thermal conductivity 42 – 48 W/(m⋅°C)
Electrical Properties
Electrical resistivity 20 – 25 μΩ*cm
Post Treatments
Post-Processing Tempering & Annealing
Anodizing compatibility Not suitable
Common Applications
Heavy duty shafts
Connecting rods
High tensile bolts
metal for welding

Our Alloy steel 4140 | 1.7225 | EN19 | 42CrMo4 service capabilities

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