20Mn2 alloy steel is a widely used medium carbon manganese alloy sort known for its good toughness and fine formability. Its compositional make-up typically consists of approximately 0.18-0.23% C and 0.75-0.95% Mn, https://mattieaamf848429.aboutyoublog.com/47226064/20mn2-steel-properties-applications-and-heat-treatment