Mechanical properties:
– Tensile strength: 850-1000 MPa
– Yield strength: 635 MPa
– Elongation: 20%
– Hardness: 262-352 Brinell
– Impact resistance: 45 Joules (at -20°C)
Technical properties:
– Density: 7.7 g/cm3
– Thermal conductivity: 30 W/m°C
– Electrical resistivity: 0.60 µOhm/cm
– Modulus of elasticity: 200 GPa
– Poisson’s ratio: 0.27
Chemical composition:
– Carbon (C): 0.20% max
– Silicon (Si): 1.00% max
– Manganese (Mn): 1.00% max
– Phosphorus (P): 0.040% max
– Sulfur (S): 0.030% max
– Chromium (Cr): 15.0-17.0%
– Nickel (Ni): 1.25-2.50%
Applications:
431S29 steel grade is commonly used in applications requiring high tensile and yield strength, corrosion resistance, and toughness. It is often used in components for the aerospace, automotive, and marine industries, as well as in medical instruments and equipment. Additionally, it is suitable for applications in the food and beverage industry due to its resistance to chemicals and acids.
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