Comparison of weldability between 316L and 304 stainless steel
316L stainless steel is an ultra-low carbon pure austenitic stainless steel with excellent weldability and low susceptibility to intergranular corrosion. However, due to its low thermal conductivity and high linear expansion coefficient, the welded joints of this steel type may experience significant tensile stress during the cooling process. When the welding heat input is high and the cooling rate is slow, it is prone to forming hot cracks, corrosion cracks, and deformations.





