Chemical Composition Base Element Fe (Iron) C (Carbon) 0.15 % (maximum) Cr (Chromium) 16 to 18 % Fe (Iron) 70.8 to 77.3 % (estimate) Mn (Manganese) 0.5 to 2 % Ni (Nickel) 6 to 8 % P (Phosphorus) 0.05 % (maximum) S (Sulfur) 0.03 % (maximum) Si (Silicon) 0.2 to 1 % 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 215 MPa Ultimate Tensile Strength 540 MPa Elongation 40 % strain Brinell Hardness 220 (maximum) Notes on Mechanical Properties 50 mm gauge Other Information Material Class Ferrous Alloy Alloy Family High-Alloy Steel (Corrosion and Heat Resistant, Stainless, and Nickel Steels) Alloy Group Austenitic stainless steel Alloy Sub-Group 301 grades Country United Kingdom Standards Body BSI (United Kingdom) Description Sheet, strip, 1/2 hardened Designation 301S21 Specification Type Standard Specification BS 1449/2 Specification Year 1983 Specification Status Obsolete Specification Status Notes Superseded withdrawn Source Worldwide Guide to Equivalent Irons and Steels, 5th ed.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 British Standards Institution (BSI)
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Chemical Composition