Alloy steels are designated by AISI four-digit numbers. They contain different kinds of steels having compositions that exceed the limitations of Mn, C, Mo, Si, Ni, Va, and B set for carbon steels.

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Steels that contain specified amounts of alloying elements -- other than carbon and the commonly accepted amounts of manganese, copper, silicon, sulfur, and phosphorus -- are known as alloy steels.

Super alloys are metallic alloys used at high temperatures above 540ºC (1000ºF) where high surface stability and deformation resistance are mainly required. Three major classes of super alloys include ...

Compare popular steel alloys used in modern engineering. Learn where A36, 4140, 304 stainless, A572 Grade 50, and 2205 duplex ...