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  5. Stainless steel 420 | 1.4028 | X30Cr13
Material Name

Tool steel A3 – Annealed state

Material Type
Metal

Process Compatibility

CNC machining
Property Value
Mechanical Properties
Ultimate tensile strength 700 MPa
Yield strength 340 MPa
Young’s modulus (modulus of elasticity) 190 GPa
Elongation at break 21 %
Physical Properties
Corrosion resistance Poor
Magnetism Magnetic
Weldability Poor
Thermal Properties
Thermal expansion coefficient 11.8 – 14.3 × 10-6/ºC
Thermal conductivity 37 W/(m⋅°C)
Post Treatments
Post-Processing Cold work, Annealing, Quenching, Tempering, Hardening
Anodizing compatibility Not suitable
Common Applications
Cold forging & heading dies Cold forging dies
Shear blades Knurling tools

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