Range attributes C (Carbon) 0.52 to 0.6 % Cr (Chromium) 0.35 % (maximum) Cu (Copper) 0.35 % (maximum) Fe (Iron) 96.7 to 98.9 % (estimate) Mn (Manganese) 0.5 to 0.8 % Mo (Molybdenum) 0.15 % (maximum) Ni (Nickel) 0.35 % (maximum) P (Phosphorus) 0.035 % (maximum) Rockwell Hardness C scale 58 S (Sulfur) 0.035 % (maximum) Si (Silicon) 0.1 to 0.4 % V (Vanadium) 0.1 % (maximum) W (Tungsten) 0.1 % (maximum) Discrete attributes ~Checking Status Not verified - Original build Date Last Checked Thursday, October 17, 2013 Alloy Family Tool Steel Alloy Group Miscellaneous or unclassified Alloy Sub-Group Miscellaneous tool steel Available forms Wrought Base Element Fe (Iron) Country France 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 AFNOR (France) 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 Country* France Description_old Quenched Designation C55E4U Specification AFNOR NF A35-590 Specification Status Notes withdrawn Long text attributes Composition Note Fe is listed as a Base element for this material, but its % value is not listed in the specification.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 Quenched Hyperlink attributes Similar Alloys Click here to find similar alloys Integer attributes Specification Year 1992 Further Information Organizations Association Francaise de Normalisation (AFNOR) (French Association for Standardization)
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Range attributes

C (Carbon)

0.52 to 0.6