Sx309 is a highly alloyed austenitic stainless steel with excellent oxidation resistance, high temperature strength and creep resistance.The lower nickel content improves the high-temperature sulfur corrosion resistance of SX309. It is ductile, malleable, easy to manufacture and process. The SX 309S is a low-carbon version of the SX 309, it is recommended for applications where sensitization, subsequent high-temperature gas corrosion, or condensation may occur during shutdown.
Typical applications : Sx309/309s is specifically designed for its high temperature oxidation resistance.
It is common for SX309, 310 and 321 to be used in the same piece of equipment in different temperature zones.
Property Of 309 Stainless Steel Tube
|Alloy 309||Alloy 309S|
|(UNS S30900)||(UNS S30908)|
|Cr||22.00 min/24.00 max||22.00 min/24.00 max|
|Ni||12.00 min/15.00 max||12.00 min/15.00 max|