Mechanical Properties:
– Tensile Strength: 655 MPa
– Yield Strength: 275 MPa
– Elongation: 20%
– Hardness: 262 HB
Technical Properties:
– Density: 7.75 g/cm3
– Melting Point: 1450°C
– Thermal Conductivity: 24 W/m·K
– Specific Heat Capacity: 460 J/kg·K
Chemical Composition:
– Carbon: 0.15% max
– Manganese: 1.25% max
– Phosphorus: 0.06% max
– Sulfur: 0.15% max
– Silicon: 1.00% max
– Chromium: 12-14%
The heat treatment process for 416S21 steel involves annealing, hardening, and tempering. Annealing is performed at a temperature of 815-900°C, followed by slow cooling. Hardening is achieved by heating to 1010-1065°C and then quenching in oil or air. Tempering is done at a temperature range of 180-300°C to achieve the desired hardness and strength. This heat treatment process helps to improve the steel’s mechanical properties and overall performance in various applications.
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