Chemical Composition Base Element Fe (Iron) C (Carbon) 0.16 to 0.21 % Cr (Chromium) 0.9 to 1.2 % Cu (Copper) 0.3 % (maximum) Fe (Iron) 95.2 to 97 % (estimate) Mn (Manganese) 0.6 to 0.9 % Mo (Molybdenum) 0.15 % (maximum) Ni (Nickel) 1.2 to 1.5 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.035 % (maximum) Si (Silicon) 0.1 to 0.4 % Ti (Titanium) 0.05 % (maximum) 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 Yield Strength 1.46e7 lbf/ft^2 Ultimate Tensile Strength 1.98e7 to 2.72e7 lbf/ft^2 Elongation 9 % strain Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Nickel chromium molybdenum steel Alloy Sub-Group 8620/ 8720 Country France Standards Body AFNOR (France) Description Case hardened; 16<t<=40 mm Designation 20NC6 Specification Type Standard Specification AFNOR NF A35-551 Specification Year 1986 Specification Status Active Specification Status Notes withdrawn Source Worldwide Guide to Equivalent Irons and Steels, 5th ed.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 Association Francaise de Normalisation (AFNOR) (French Association for Standardization)
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Chemical Composition