Chemical Composition Base Element Fe (Iron) C (Carbon) 0.7 % Fe (Iron) 98.2 % (estimate) Mn (Manganese) 0.9 % Si (Silicon) 0.2 % 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 1240 to 1340 MPa Ultimate Tensile Strength 1450 to 1620 MPa Elongation 9 to 12 % strain Brinell Hardness 415 Other Information Material Class Ferrous Alloy Country USA Description Heat treated: 210,000-235,000 TS; 180,000-195,000 YS; 9-12 El; 30-35 RA; 415 HB; For springs; oil hardened. Designation BETHLEHEM SILICO-MANGANESE SPRING STEEL Specification Type Manufacturer's Specification Specification Status Obsolete Source Woldman's Engineering Alloys 9th ed. J. Frick Editor, ASM International 2000 Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations Bethlehem Steel Corp.
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Chemical Composition