Unveiling the Properties and Uses of 431S29 Steel Grade: A Comprehensive Guide

[ad_1] 431S29 steel is a martensitic stainless steel with high tensile strength, good toughness, and excellent corrosion resistance. It is commonly used in applications requiring high mechanical properties such as shafts, gears, valves, and fasteners.

Technical properties:
– Tensile strength: 900-1300 MPa
– Yield strength: 600-900 MPa
– Elongation: 15-20%
– Hardness: 25-30 HRC
– Density: 7.7 g/cm3

Mechanical properties:
– High tensile strength and good toughness
– Excellent corrosion resistance
– Good resistance to oxidation at high temperatures

Chemical composition:
– Carbon (C): 0.15% max
– Silicon (Si): 1.00% max
– Manganese (Mn): 1.00% max
– Phosphorus (P): 0.04% max
– Sulfur (S): 0.03% max
– Chromium (Cr): 15-17%
– Nickel (Ni): 1.25-2.50%
– Molybdenum (Mo): 0.6% max

Uses:
– 431S29 steel is commonly used in applications requiring high tensile strength and corrosion resistance such as shafts, gears, valves, and fasteners.
– It is also used in applications requiring good toughness and resistance to oxidation at high temperatures.
– Other common uses include surgical instruments, petrochemical equipment, and food processing equipment.
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