The difference between 304, 304L, 316 and 316L stainless steel coil

Both 304 and 304L are austenitic stainless steels, with the difference being that the latter has a carbon content of ≤0.03% (ultra-low carbon) and stronger resistance to intergranular corrosion after welding, making it suitable for food processing and welding components; 316/316L contains 2% -3% molybdenum, significantly improving its resistance to chloride corrosion.

316L stainless steel coil has better resistance to pitting and crevice corrosion than 304 series in harsh environments such as marine and chemical industries, but its strength is slightly lower; 304 stainless steel is widely used in ordinary processes such as home appliances and building decoration due to its high cost-effectiveness.

Selection needs to be based on the scenario: 304L stainless steel coil is suitable for high temperature welding requirements, 316L stainless steel specializes in high corrosion environments; Attention should be paid to the 316 series cold work hardening tendency during processing to avoid excessive deformation or cracking risks.