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SAF 2205, also known as Sandvik SAF 2205, is a Sandvik-owned trademark for a 22Cr duplex (ferritic-austenitic) stainless steel. ''SAF'' derives from ''S''andvik ''A''ustenite ''F''errite. The nominal chemical composition of SAF 2205 is 22% chromium, 5% nickel, 3.2% molybdenum and other alloying elements such as nitrogen and manganese.〔(), Material datasheet for SAF 2205 (seamless tube and pipe) issued by Sandvik 2011-01-21〕 The UNS designation for SAF 2205 is S31803/S32205 and the EN steel no. is 1.4462. Typical properties of SAF 2205 duplex stainless steel are:〔(), engineeringtalk.com article Jun 20, 2008〕〔(), matweb.com Sandvik SAF 2205 Seamless tube and pipe〕 * high resistance to stress corrosion cracking (SCC) in chloride-bearing environments * high resistance to stress corrosion cracking (SCC) in environments containing hydrogen sulphide * high resistance to general corrosion, pitting corrosion, and crevice corrosion * high resistance to erosion corrosion and corrosion fatigue * high mechanical strength - roughly twice the proof strength of austenitic stainless steel * good weldability ==See also== * Duplex Stainless Steel 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SAF 2205」の詳細全文を読む スポンサード リンク
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