Chemical Composition Base Element Fe (Iron) C (Carbon) 1 to 1.1 % Co (Cobalt) 4.7 to 5.2 % Cr (Chromium) 3.8 to 4.4 % Cu (Copper) 0.25 % (maximum) Fe (Iron) 73.9 to 78.8 % (estimate) Mn (Manganese) 0.2 to 0.51 % Mo (Molybdenum) 8 to 9 % N (Nitrogen) 0.05 to 0.1 % Nb (Niobium) 0.1 to 0.3 % Ni (Nickel) 0.6 % (maximum) P (Phosphorus) 0.03 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.2 to 0.5 % V (Vanadium) 1.7 to 2.1 % W (Tungsten) 1.5 to 2 % 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. Mechanical Properties Brinell Hardness 285 (maximum) Other Information Material Class Ferrous Alloy Alloy Family Tool Steel Alloy Group High-speed tool steel Alloy Sub-Group Molybdenum high-speed steel Country Russia Standards Body GOST (Russia) Description High speed steel for alloyed steels, stainless, after quenching and high-temp tempering; hardness after annealing Designation R2AM9K5 Specification Type Standard Specification GOST 19265 Specification Year 1973 Specification Status Active Specification Status Notes Active 2005 Source Worldwide Guide to Equivalent Irons and Steels, 5th ed. ASM International 2006 Available forms Wrought Similar Alloys Click here to find similar alloys Links Organizations State Committee of the Russian Federation for Standardization and Metrology Gosstandart of Russia (GOST)
No warranty is given for the accuracy of these data Copyright © 2024 ASM International®

Chemical Composition

Base Element

Fe (Iron)