Type stainless steel of the Series 300. Due to the high content of chromium and nickel, types 309 309S and possess high mechanical strength, toughness and excellent resistance to oxidation at temperatures up 1000 ° C about.
These stainless not be hardened by heat treatment, are not magnetic and are preferably used in condition Annealing. Can be welded without subsequent heat treatment.
The 309S is a modification of type 309 and contains a maximum of 0,08% carbon to reduce the tendency to precipitation of carbides during welding or high temperature applications.
AISI 309S
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