This article is a collection of two iron-carbon phase diagrams.

This article is a compilation of tables that present information on austenitizing temperatures for direct-hardening carbon and alloy steels, case depth of steels for different carburizing times and temperatures, typical heat treatments for case hardening of carbon and carburizing of alloy steels, as well as direct hardening of carbon steels and alloy steels.

Steel, heated in contact with air at temperatures in the tempering range, takes on various temper colors due to the formation of a thin oxide film. This article provides detailed information on temper colors...