Understanding the Properties of 303S21 Stainless Steel

[ad_1] 303S21 stainless steel is a free-machining grade that possesses good corrosion resistance, especially when compared to other free-machining grades such as 416. The chemical composition of 303S21 stainless steel typically includes:
– Carbon: 0.15% max
– Silicon: 1.00% max
– Manganese: 2.00% max
– Phosphorus: 0.20% max
– Sulfur: 0.15% min
– Chromium: 17.0-19.0%
– Nickel: 8.0-10.0%
The mechanical properties of 303S21 stainless steel include:
– Tensile Strength: 500-750 MPa
– Yield Strength: 190-285 MPa
– Elongation at break: 35-55%
– Hardness: 262-352 Brinell
Overall, 303S21 stainless steel is a versatile and popular grade due to its good combination of mechanical and corrosion resistance properties, as well as its excellent machinability.