Chemical Composition Base Element Fe (Iron) C (Carbon) 0.25 to 0.34 % Cr (Chromium) 0.8 to 1.2 % Mn (Manganese) 0.4 to 0.7 % Mo (Molybdenum) 0.15 to 0.35 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.4 % (maximum) Si (Silicon) 0.15 to 0.4 % Balance [none specified] Other Information Material Class Ferrous Alloy Country USA Description Abrasion-resisting quenched and tempered steel plate; 4 inch (300) grade and 3 inch (311) grade. Designation RQAR 300/311 Specification Type Manufacturer's Specification Specification Status Active Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Plate Similar Alloys Click here to find similar alloys Links Organizations Bethlehem Steel Corp.
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Chemical Composition