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AISI 440C Martensitic Stainless Steel Chemical Composition Properties, Grades, Charts and Online Pdf

AISI 440C is a well-known high carbon martensitic stainless steel that comes with properties, such as excellent anti-corrosion ability, wear resistance, and capability to maintain high quality of edge. Generally, its chemical composition includes 0.95-1.20% carbon, 16-18% chromium, 1% manganese, 1% silicon, 0.04% phosphorus, and 0.03% sulfur. It has a high carbon content, which accounts for its excellent hardness and toughness that makes it applicable in the making of knife blades, surgical instruments, bearings, and valve components. The AISI 440C is part of the 400 stainless steel series, this type of stainless steel being hardened through the heat treatment process and has a martensitic structure. The alloy's attributes include impressive strength to weight ratio, acceptable corrosion resistance and excellent polishability. Engineers and designers can generally delight in the comprehensive charts as well as spreadsheets that have every single one of the material characteristics and grades of the different kinds of materials to ensure that the best material is used for any specific application.

AISI 440C Martensitic Stainless Steel Chemical Composition And Grade Table

AISI 440C is a high-carbon martensitic stainless steel with superior corrosion and anti-wear resistance, as well as great hardness. Its chemical composition usually contains any varying proportion of 0.95 – 1.2% carbon, 16 – 18% chromium, 0.75% manganese, 1% silicon, 0.04% phosphorus, and 0.03% sulfur. Inclusion of minimal amounts of molybdenum, vanadium, and nickel composition provides additional benefits. AISI 440C is classified to ASTM A276 and applied in the cases where high strength and resistance to corrosion are needed such as in manufacturing process of molds for plastics processing and bearings and surgical instruments.

AISI 440C Martensitic Stainless Steel
Elements Fe Cr C Mn Si Mo
Min (%) - - - - - -
Max (%) 79.15 17 1.1 1 1 0.75

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