AISI TYPE 201 MODIFIED is a chromium-nickel-manganese austenitic stainless steel whose composition is closely controlled to provide sufficient austenite stability for service at temperatures as low as 425 F (245 C). In the interest of minimizing sensitization (carbide precipitation) during welding which can result in a loss of low-temperature toughness, carbon in TYPE 201 MODIFIED is specified at 0.03% max. In regular Type 201, a maximum of 0.15% carbon is allowed. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-476. Producer or source: Allegheny Ludlum Corporation.

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