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The number is in the following format: x.yyzz(zz) Where x is the material type (only 1 is specified so far), yy is the steel group number (specified in EN10027-2) and zz(zz) is a sequential number designated by the certifying body, the number in brackets being unused but reserved for later use.
The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels. These efforts were similar ...
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AISI grade [7] C Cr Mo Ni Others Melts at [8] Remark 1.4310 X10CrNi18-8 301 0.10 17.5 NS: 8 NS: 1420 For springs 1.4301 X5CrNi18-10 304 < 0.07 18.5 NS: 9 NS: 1450 A very common austenitic stainless steel grade 1.4307 X2CrNi18-9 304L < 0.030 18.5 NS: 9 NS: 1450 Similar to the above but not susceptible to intergranular corrosion thanks to a lower ...
Many material or standard specifications include a number of different UNS numbers that may be used within that specification. For example: UNS S30400 (SAE 304, Cr/Ni 18/10, Euronorm 1.4301 stainless steel) could be used to make stainless steel bars ( ASTM A276 ) or stainless steel plates for pressure vessels ( ASTM A240 ) or pipes ( ASTM A312 ).
Logo of the AISI The "Steelmark" logo, originated by U.S. Steel and used by AISI to promote the steel industry. The logo of the Pittsburgh Steelers and Chilean association football club Huachipato is based on the Steelmark. Members of American Iron and Steel Institute in 1915 at the ore docks in Cleveland