Range attributes Brinell Hardness 255 (maximum) C (Carbon) 0.95 to 1.03 % Cr (Chromium) 3.8 to 4.5 % Fe (Iron) 85.2 to 87.9 % (estimate) Mn (Manganese) 0.4 % (maximum) Mo (Molybdenum) 2.5 to 2.9 % P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.45 % (maximum) V (Vanadium) 2.2 to 2.5 % W (Tungsten) 2.7 to 3 % Discrete attributes ~Checking Status Not verified - Original build Date Last Checked Thursday, October 17, 2013 Alloy Family Tool Steel Alloy Group High-speed tool steel Alloy Sub-Group Molybdenum high-speed steel Available forms Wrought Base Element Fe (Iron) Country International 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 ISO (International) Short text attributes 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* International Description_old Wrought high-speed tool steel; ann hardness. Designation HS3-3-2 Specification ISO 4957 Specification Status Notes active 1999 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 Wrought high-speed tool steel; ann hardness. Hyperlink attributes Similar Alloys Click here to find similar alloys Integer attributes Specification Year 1999 Further Information Organizations International Organization for Standardization (ISO)
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Range attributes

Brinell Hardness

255

(maximum)