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Difference between 316 stainless steel pipe and 316L stainless steel pipe

Author: Heng Hexin    Date: May 21, 2021    Source:    Focus on:

at present 316 and 316L stainless steels have been widely used in the market, and there are differences between 316 and 316L stainless steels, so their functions are also different. So how should we distinguish their functions? Then I need to look from their differences.

First, the nature is different, 316L is a stainless steel grade, AISI 316L is the corresponding American label, and Sus 316L is the corresponding Japanese label. The unified number code of our country is s31603, the standard brand is 022cr17ni12mo2 (new standard), the old brand is 00Cr17Ni14Mo2, which indicates that Cr, Ni and Mo are mainly contained, and the number represents the percentage of the content.

316 stainless steel is a kind of austenitic stainless steel. Its corrosion resistance and high temperature strength are greatly improved by adding Mo element. The high temperature resistance can reach 1200-1300 degrees, which can be used in harsh conditions.

Second, it has different characteristics, 316L has been widely used in chemical industry because of its excellent corrosion resistance. 316L is also a derivative steel of 18-8 austenitic stainless steel with 2-3% Mo added. On the basis of 316L, many steel grades are also derived, such as 316Ti after adding a small amount of Ti, 316N by adding a small amount of N, and 317L by increasing the content of Ni and mo.

The corrosion resistance of 316 stainless steel is better than that of 304 stainless steel. It has good corrosion resistance in the production of pulp and paper. Moreover, 316 stainless steel is also resistant to marine and corrosive industrial atmosphere.

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