Chemical Composition Base Element Fe (Iron) C (Carbon) 0.18 to 0.25 % Cr (Chromium) 2.7 to 3 % Fe (Iron) 94.1 to 95.3 % (estimate) Mn (Manganese) 0.3 to 0.5 % Mo (Molybdenum) 0.35 to 0.45 % P (Phosphorus) 0.035 % (maximum) S (Sulfur) 0.035 % (maximum) Si (Silicon) 0.15 to 0.35 % V (Vanadium) 0.75 to 0.85 % W (Tungsten) 0.3 to 0.45 % 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 540 MPa Ultimate Tensile Strength 690 to 830 MPa Elongation 16 % strain Brinell Hardness 205 to 250 Other Information Material Class Ferrous Alloy Alloy Family Alloy Steel Alloy Group Chromium molybdenum steel Alloy Sub-Group 4118/ 4120/ 4121 Country Hungary Standards Body MSZ (Hungary) Description High-pressure hydrogenation vessel; 0-100 mm; QT Designation 21CrVMoW12 Specification Type Standard Specification MSZ 2295 Specification Year 1988 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