316 stainless steel, 18Cr-12Ni-2.5Mo Due to the addition of Mo, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, which can be used under harsh conditions; excellent work hardening (non-magnetic). Equipment for seawater use, chemical, dye, papermaking, oxalic acid, fertilizer and other production equipment; photographs, food industry, facilities in coastal areas, ropes, CD rods, bolts, nuts. Chemical composition of 316 stainless steel: C≤0.08, Si≤1.00, Mn≤2.00, P≤0.045, S≤0.03, Ni: 10.0-14.0, Cr: 16.0-18.5, Mo: 2.0-3.0. Mechanical properties of 316 stainless steel, tensile Strength (Mpa) 620 MIN, yield strength (Mpa) 310 MIN, elongation (%) 30 MIN, area reduction (%) 40 MIN, density of 316 stainless steel 8.03 g / cm3, austenitic stainless steel generally use this value .
By a way, SS316 is more two Mo than SS304, which have a good rust-proof ability and price is higher than SS304.