200 Series—austenitic chromium-nickel-manganese alloys
Type 202—austenitic general purpose stainless steel
300 Series—austenitic chromium-nickel alloys
Type 304—the most common grade; the classic 18/8 stainless steel.
Type 304L— same as the 304 grade but contains less carbon to increase weldability. Is slightly weaker than 304.
Type 304LN—same as 304L, but also nitrogen is added to obtain a much higher yield and tensile strength than 304L.