Blue Blade Steel, a hardening and tempering mill in the United States, has over 80 years of experience and uses cutting-edge technology to provide unrivaled quality, service, and expertise in pretempered strip steel. Blue Blade Steel uses premier furnaces and a unique quench and temper procedure to produce customized hardened and tempered high carbon, alloy, and stainless strip steel with a range of finishes and edges to your strict specifications.