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Use The Following Five Points To Distinguish Between 316 Stainless Steel Pipe And 316L Stainless Steel Pipe

Aug. 27, 2020

Literally, the difference between 316 stainless steel pipe and 316L stainless steel pipe is the letter "L", but there are still many differences between them. Now 316L Stainless Steel Pipe Manufacturers teach you how to distinguish between 316 stainless steel pipe and 316L stainless steel pipe.



Difference in composition



The upper limit of carbon content of 316 Stainless Steel Pipe is 0.08%, and the upper limit of carbon content of 316L stainless steel pipe is 0.03%. 316L stainless steel tube has low carbon content and is easy to weld. Because of the cost of carbon control, the price of 316L stainless steel pipe is higher than that of 316 stainless steel pipe.



Intensity difference



The tensile strength of 316 stainless steel pipe is higher than that of 316L stainless steel pipe. The tensile strength of 316 stainless steel pipe is higher than 515Mpa, and the tensile strength of 316L stainless steel is only higher than 485Mpa.


316L Stainless Steel Pipe

316L Stainless Steel Pipe



Corrosion resistance


316L Stainless Steel Pipe has better corrosion resistance and is suitable for coastal areas.



Welding treatment


316 stainless steel pipe has good welding performance and can be welded by standard welding methods. In order to obtain good corrosion resistance, the welded section of the 316 stainless steel pipe needs to be annealed after welding. If 316L stainless steel pipe is used, post-weld annealing treatment is not required.



Heat treatment


It should be annealed in the temperature range of 1850℃-2050℃, then quickly annealed, and then quickly cooled. 316 stainless steel cannot be hardened by heat treatment.


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