Chemical Composition Base Element Fe (Iron) C (Carbon) 0.25 to 0.35 % Cr (Chromium) 0.6 to 0.9 % Fe (Iron) 97 to 97.9 % (estimate) Ni (Nickel) 1.25 to 1.75 % 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 793 MPa Elongation 19 % strain Brinell Hardness 229 Other Information Material Class Ferrous Alloy Country USA Description Water quenched: 115,000 TS; 100,000 YS; 19 El; 55 RA; 229 HB; For engine and superheater bolts; heat treated. Designation MAYARI SUPERHEATER BOLT 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