CNC machining in Tool steel S7 | Manufacturing Materials

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Tool steel S7

4.5 (4 Reviews) 263 orders

Material type: Metal, Magnetic

Tool steel S7 is a shock-resistant air hardening steel and has exceptional impact properties plus the highest hardenability of shock resisting grades of tool steel. Steel S7 also possesses good softening resistance at high temperatures which gives it hot work capabilities. Since S7 steel hardens in air, it is also safe and stable in heat treatment.

Process compatibility

CNC Milling CNC Turning

Material Color

Silver gray

Material advantages

It is characterized with excellent toughness, high strength and medium wear resistance. It is a great candidate for tooling applications and can be used for both cold and hot working applications.

Material shortcomings

Poor weldability

Recommended description

S7 steel hardens in air, and it is also safe and stable in heat treatment.

Properties

Name
Tensile strength	2200MPa
Yield strength	2050MPa
Density	7.833g/cc
Hardness	30-60HRC
Elongation at Break	7.5%
Modulus of elasticity	215GPa
Maximum service temperature	165 - 215 °C
Thermal expansion coefficent	10.7 - 11.2 10^-6 ºC
Thermal conductivity	42.3 - 45.7 W/(m⋅°C)