Engineering Steel is a steel that has had small amounts of one or more alloying elements (other than carbon) such as such as manganese, silicon, nickel, titanium, copper, chromium and aluminum added. This produces specific properties that are not found in regular carbon steel.
Engineering Steels are workhorses of industry because of their economical cost, wide availability, ease of processing, and good mechanical properties. Alloy steels are generally more responsive to heat and mechanical treatments than carbon steels.
Square Tube is a metal that has been formed into a square tube. It is measured by taking the outside dimensions (which are the same size) and then the wall thickness.
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