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304 vs 316 stainless steel
Super duplex stainless steel(SDSS) refers to the duplex stainless steel with prEN > 40, 25% Cr and high molybdenum (> 3.5%) and high nitrogen (0.22% ～ 0.30%). The main brands are UNS S32550 (ur52n +), S32750 (SAF 2507) and S32760 (zeron 100). They were developed by cli in France, Sandvik in Sweden and mater + Platt in England. The composition of these three steels is similar.
Duplex stainless steel properties
Duplex stainless steel properties were analyzed from various tests.
Duplex stainless steel applications
Duplex stainless steel is a kind of stainless steel composed of ferrite and austenite, This alloy applications in various industries is introduced
Other alloying elements on ca6nm martensitic stainless steel tube
Adding micro-alloy elements Ti, Nb, and V in a CA6NM martensitic stainless steel tube is usually expected to form a nitrogen compound with C and N.
Si in CA6NM martensitic stainless steel
Si is a strong ferrite stabilizing element in martensitic stainless steel. Si in CA6NM stainless steel can suppress temper embrittlement and the decomposition of retained austenite during tempering.
Al in CA6NM martensitic stainless steel
First of all, as a deoxidizer, we often add Al in CA6NM stainless steel. At the same time, Al is also a ferrite forming element. As a result, its promoting effect on ferrite formation is about 2.5~3 times of that of Cr.