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  • Metal

    Material type

  • Alloy steel 4140 | 1.7225 | EN19 | 42CrMo4

    Material name

  • 42CrMo4, 1.7225

    Alternative names

  • CNC machining

    Process compatibility

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 coefficent
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

Tagged: metal alloy steel
Alloy steel 4140 | 1.7225 | EN19 | 42CrMo4

Alloy steel 4140 (CNC) has good overall properties, with good strength and toughness. Suitable for many industrial applications. Not weldable.

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