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  5. Mild steel A36 | 1.025 | Fe 410
Material Name

Alloy steel 4340 | 1.6511 | 36CrNiMo4 | EN24

Material Type
Metal

Process Compatibility

CNC machining
Property Value
Mechanical Properties
Ultimate tensile strength 690 – 1080 MPa
Yield strength 470 – 630 MPa
Young’s modulus (modulus of elasticity) 205 – 213 GPa
Elongation at break 15 – 22 %
Physical Properties
Corrosion resistance Moderate to Poor
Magnetism Semi-Magnetic
UV resistance Excellent
Weldability Moderate
Thermal Properties
Maximum service temperature 613 – 652 °C
Thermal expansion coefficient 11.5 – 13 × 10-6/ºC
Thermal conductivity 35 – 50 W/(m⋅°C)
Electrical Properties
Electrical resistivity 18 – 27 μΩ*cm
Post Treatments
Post-Processing Tempering & Annealing
Anodizing compatibility Not suitable
Common Applications
High tensile applications
General engineering parts
Connecting rods & bolts

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