Chemical Composition Base Element Fe (Iron) Al (Aluminum) 3.75 % C (Carbon) 0.025 % Cr (Chromium) 13 % Fe (Iron) 82.3 to 82.4 % (estimate) Mn (Manganese) 0.3 % Ni (Nickel) 0.25 % P (Phosphorus) 0.045 % (maximum) S (Sulfur) 0.03 % (maximum) Ti (Titanium) 0.3 % 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 434 MPa Ultimate Tensile Strength 579 MPa Elongation 24 % strain Density 7.34 Mg/m^3 Rockwell Hardness B scale 81 Other Information Material Class Ferrous Alloy Alloy Family Stainless Steel Alloy Group Ferritic Country USA Designation AK STEEL 13-4SR Specification Type Manufacturer's Specification Specification Status Active Similar US Grade ASTM B603 Similar UNS Number K91470 Source Alloy Digest, ASM International Organization AK Steel Corporation Available forms Sheet, Strip, Strip Similar Alloys Click here to find similar alloys Links Organizations AK Steel Corporation
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Chemical Composition