Range attributes C (Carbon) 0.43 to 0.48 % Cr (Chromium) 0.4 to 0.6 % Fe (Iron) 96.5 to 97.7 % (estimate) Mn (Manganese) 0.75 to 1 % Mo (Molybdenum) 0.15 to 0.25 % Ni (Nickel) 0.4 to 0.7 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.04 % (maximum) Si (Silicon) 0.15 to 0.35 % Ultimate Tensile Strength 1240 MPa Yield Strength 1140 MPa Discrete attributes ~Checking Status Not verified - Original build Date Last Checked Thursday, October 17, 2013 Alloy Family Alloy Steel Alloy Group Nickel chromium molybdenum steel Alloy Sub-Group 8645/ 8650 Available forms Wrought Base Element Fe (Iron) Country USA Material Class Ferrous Alloy Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Specification Status Active Specification Type Standard Standards Body SAE (USA) Short text attributes Alternate Name formerly NV 5, commercially 8645 Composition Note_old Fe is listed as a Base element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Country* USA Description_old Engine poppet valve, martensitic. Designation G86450 Specification SAE J775 Specification Status Notes active 1993 Long text attributes Composition Note Fe is listed as a Base element for this material, but its % value is not listed in the specification. The value shown is a calculated one. Description Engine poppet valve, martensitic. Hyperlink attributes Similar Alloys Click here to find similar alloys Integer attributes Specification Year 1993 Further Information Organizations SAE, International (SAE) (SAE J)
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Range attributes

C (Carbon)

0.43 to 0.48