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SAF 2205, is a Alleima-owned trademark (Formerly Sandvik Materials Technology) 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 . [ 1 ]
Typically Grade EN 1.4462 (also called 2205). It is typical of the mid-range of properties and is perhaps the most used today Super-duplex (PREN range: 38–45) Typically grade EN 1.4410 up to so-called hyper duplex grades (PREN: >45) developed later to meet specific demands of the oil and gas as well as those of the chemical industries.
[80] [81] Duplex stainless steel welding by electric arc is a common practice but requires careful control of the process parameters. Otherwise, the precipitation of unwanted intermetallic phases occurs, which reduces the toughness of the welds.
Duplex stainless steel pipelines PD 6705-2: ... Welding — Recommendations for welding of metallic materials — Part 7: Electron beam welding EN 1011-8: Welding ...
However, with increasing chloride contents, higher alloyed stainless steels such as Type 2205 and super austenitic and super duplex stainless steels are used. [20] Important considerations to achieve optimum corrosion performance are: [21] the correct grade choice for the chloride content of the water; avoidance of crevices when possible by ...
AL-6XN (UNS designation N08367) is a type of weldable stainless steel that consist of an alloy of nickel (24%), chromium (22%) and molybdenum (6.3%) with other trace elements such as nitrogen.
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