Density of steel by grade (carbon, alloy, stainless, tool). Typical range 7.75–8.05 g/cm³ (7750–8050 kg/m³). Handy tables in g/cm³, kg/m³, lb/in³ and quick FAQs. Density of Common Engineering Materials and Metals. Density is defined as the mass per volume. Where. Conversion of density - see "Unit Converter" on left side of this web page. Related: Learn more about the density of steel & its importance in construction and manufacturing. Explore why density makes steel one of the strongest materials. Densities of some common metals, metallic elements and alloys - aluminum, bronze, copper, iron and more.