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AISI 440A Martensitic Stainless Steel Chemical Composition & Properties, Grade, Table and Pdf

AISI 440A is a high-carbon martensitic stainless steel known for its good corrosion resistance; strength; and blades' durability. In its chemical makeup, it is usually a leading component with a proportion of 0.60 - 0.75% carbon, 16 - 18% chromium, 0.75% manganese, 1% silicon, 0.04% phosphorus, and 0.03% sulfur. This allotrope is more resistant to scratching and wearing out than its others and can be used everywhere, including knives production, surgical instruments manufacture, and bearings production. AISI 440A showcases high polishability that works well for the aesthetics. Generally, such purity is heat treated to secure outstanding mechanical features. Its mildly corrosion-resistant nature makes it a good choice for application in moderately corrosive environments. Engineers and manufacturers typically utilize charts and PDFs that provide highly specific information regarding the said material's properties and grades so that one can choose the appropriate material for different applications.

AISI 440A Martensitic Stainless Steel Chemical Composition And Grade Table

AISI 440A is a martensitic stainless steel known for being the perfect balance of excellent corrosion resistance, and high hardness. Its chemical content is comprised of around 0.70-0.75% carbon, 16-18% chromium, 0.75% manganese, 1% of silicon, 1% of molybdenum, and a few of other elements. It is this measurement that confers on the blade its good strength, hardness, and resistance to wear, and it is suitable, consequently, for many different applications such as kitchen cutlery, surgical equipment, and bearings. AISI 440A belongs to the 400 series of stainless steels. The absence of nickel is what allows AISI 430 to be hardened and tempered to strike the right balance between corrosion resistance and hardness.

AISI 440A Martensitic Stainless Steel
Elements Fe Cr Mn Si Mo C S P
Min (%) - 16 - - - 0.60 - -
Max (%) Balance 18 1 1 0.75 0.75 0.03 0.04

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