Ferritic stainless steel SS316

2017-06-10View Original

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For stainless steel heat exchangers SS316 that are not composite plates, per API582, is it necessary to measure the ferrite content? Measurement range? How to control the ferrite content between FN4 and 8?

Reply #22017-07-18

For grade 316, the ferrite can reach FN4-8 without additional control. . The ratio of the austenite-forming elements NI to Cr is so high. . API 582 6.4 specifies how these requirements should be stated; the FN for 16-8-2 weld deposits shall be 1-5 FN.

Reply #32018-11-28

It seems that testing isn’t necessary for heat treatment or use at high temperatures

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Ferritic stainless steel SS316

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