Chemical Composition Base Element Fe (Iron) Al (Aluminum) 0.02 to 0.06 % C (Carbon) 0.1 to 0.18 % Cr (Chromium) 0.7 to 1 % Cu (Copper) 0.35 % (maximum) Fe (Iron) 95.9 to 98.1 % (estimate) Mn (Manganese) 0.4 to 0.9 % Mo (Molybdenum) 0.45 to 0.55 % Nb (Niobium) 0.01 to 0.06 % Ni (Nickel) 0.35 % (maximum) P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.15 to 0.4 % Ti (Titanium) 0.02 to 0.06 % V (Vanadium) 0.02 to 0.1 % Zr (Zirconium) 0.015 to 0.06 % 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 270 MPa Ultimate Tensile Strength 440 to 580 MPa Elongation 20 % strain Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group Chromium molybdenum vanadium steel Country Hungary Standards Body MSZ (Hungary) Description Boiler, pressure vessel; 40.1-60 mm; heat-treated Designation KL9 Specification Type Standard Specification MSZ 1741 Specification Year 1989 Specification Status Active 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 Magyar Szabvanyugyi Testulet (MSZT) (Hungarian Standards Institution)
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Chemical Composition

Base Element

Fe (Iron)