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  • Metal

    Material type

  • Tool steel A3 - Annealed state

    Material name

  • CNC machining

    Process compatibility

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 coefficent
11.8 - 14.3 10^-6/ºC
Thermal conductivity
37 W/(m⋅°C)
Electrical properties
Electrical resistivity
24.5 - 30.2 μΩ*cm
Post treatments
Post-Processing
Cold work, Annealing, Quenching, Tempering, Hardening
Anodizing compatibility
Not suitable
Common applications
Shear blades
Knurling tools
Cold forging dies
Cold forging & heading dies
Tagged: metal tool steel
Tool steel A3 - Annealed state

Tool steel A3 is an air-hardened general purpose tool steel with good toughness and excellent dimensional stability. Used for molding dies.

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