Chemical Composition Base Element Fe (Iron) B (Boron) 0.001 to 0.005 % C (Carbon) 0.12 to 0.21 % Fe (Iron) 98.1 to 98.7 % (estimate) Mn (Manganese) 0.45 to 0.7 % Mo (Molybdenum) 0.5 to 0.65 % Si (Silicon) 0.2 to 0.35 % Balance Fe (Iron) Composition Note Fe is listed as a Balance element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Mechanical Properties Yield Strength 689 MPa Ultimate Tensile Strength 758 to 931 MPa Elongation 18 % strain Brinell Hardness 235 to 293 Other Information Material Class Ferrous Alloy Country USA Description Roller quenched and tempered: 110,000-135,000 psi TS; 100,000 psi YS; 18 El; 235-293 HB; Structural steel plate, to 1-1/4 in. thick. Designation RQ-100A 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