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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.
Martensitic stainless steels can be high- or low-carbon steels built around the composition of iron, 12% up to 17% chromium, carbon from 0.10% (Type 410) up to 1.2% (Type 440C): [9] Up to about 0.4%C they are used mostly for their mechanical properties in applications such as pumps, valves, and shafts.
Steel specified by purpose of use and mechanical properties. ... Stainless and heat resistant steels 5x – 8x: ... X5CrNiMo17 13 3 X5CrNiMo 19 11 X5CrNiMo 18 11: 316S 29
UNS K11547 is T2 tool steel; UNS S17400 is ASTM grade 630, Cr-Ni 17-4PH precipitation hardened stainless steel; UNS S30400 is SAE 304, Cr/Ni 18/10, Euronorm 1.4301 stainless steel; UNS S31600 is SAE 316; UNS S31603 is 316L, a low carbon version of 316. The digits "03" were assigned since the maximum allowed carbon content is 0.03%; UNS C90300 ...
X46Cr13 is the European Norm name for a common martensitic stainless steel with the numeric name 1.4034. It is equivalent to American Iron and Steel Institute standard 420C. It has the highest carbon content of the SAE 420 series. [1] [2] [3]
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 C content. 1.4305 X8CrNiS18-9 e: 303 < 0.10 18 NS: 9 0.3 1420
To qualify as stainless steel, Fe-base alloys must contain at least 10.5%Cr. The iron-chromium phase diagram shows that up to about 13%Cr, the steel undergoes successive transformations upon cooling from the liquid phase from ferritic α phase to austenitic γ phase and back to α.
The galvanic series (or electropotential series) determines the nobility of metals and semi-metals.When two metals are submerged in an electrolyte, while also electrically connected by some external conductor, the less noble (base) will experience galvanic corrosion.