Chemical Composition Base Element Fe (Iron) C (Carbon) 0.2 % (maximum) Cr (Chromium) 0.3 % (maximum) Cu (Copper) 0.3 % (maximum) Fe (Iron) 96.4 to 98.7 % (estimate) Mn (Manganese) 0.9 to 1.5 % Mo (Molybdenum) 0.45 to 0.6 % N (Nitrogen) 0.012 % (maximum) Ni (Nickel) 0.3 % (maximum) P (Phosphorus) 0.015 % (maximum) S (Sulfur) 0.005 % (maximum) Si (Silicon) 0.4 % (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 6.79e6 lbf/ft^2 (minimum) Ultimate Tensile Strength 1.07e7 to 1.36e7 lbf/ft^2 Elongation 20 % strain (minimum) Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Miscellaneous or unclassified Alloy Sub-Group Miscellaneous alloy steel Country International Standards Body ISO (International) Description Steel plates and strip for pressure equipment with specified elevated temp properties; norm and tempered, YS varies with thickness. Designation 18MnMo4-5 Specification Type Standard Specification ISO 9328-2 Specification Year 2004 Specification Status Active Specification Status Notes active 2004 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 International Organization for Standardization (ISO)
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Chemical Composition

Base Element

Fe (Iron)