Allegheny Ludlum AL-6XN alloy is characterized as a superaustenitic stainless steel having an exceptional level of corrosion resistance, especially to chloride pitting. It has high strength and its impact value at room temperature is 140 ft-lb and at 320 F (196 C) is 85 ft-lb. It is covered by ASME Boiler and Pressure Vessel Code (Case 1997 for Section VIII and Case N-438 for Section III Construction). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-494. Producer or source: Allegheny Ludlum Corporation.

The AL-6XN PLUS alloy is an enhanced version of the AL-6XN alloy (see Alloy Digest SS-494, May 1988). Both satisfy the composition requirements of UNS N08367, but AL-6XN PLUS contains a greater concentration of the alloying elements (Cr, Mo, and N) which promote corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as heat treating and joining. Filing Code: SS-923. Producer or source: Allegheny Ludlum Corporation. Originally published April 2005, revised June 2005.

CN-3MN is the cast version of AL-6XN wrought alloy UNS N08367 (see Alloy Digest SS-494). The alloy has a high molybdenum content and provides excellent pitting and crevice corrosion resistance to all waters. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on casting, heat treating, and joining. Filing Code: SS-701. Producer or source: Allegheny Ludlum Corporation. Originally published November 1997, revised January 1998.

CARPENTER AL-6XN is an improved version of AL-6X (Alloy Digest SS-349, April 1978), with higher nitrogen. The alloy is improved in pitting and crevice corrosion resistance. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-607. Producer or source: Carpenter.

ALLEGHENY LUDLUM AL 904L Alloy is an austenitic stainless steel designed for middle to high level corrosion resistance. It is produced to low carbon levels for use in the welded condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-511. Producer or source: Allegheny Ludlum Corporation.

AL 4565 alloy has a high level of austenitizers, which provides the microstructure with a high resistance to sigma formation during welding. The high nitrogen also gives the alloy superior strength among the austenitics. Applications include flue gas desulfurization and handling seawater. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as heat treating and joining. Filing Code: SS-906. Producer or source: Allegheny Ludlum Corporation.

AL20 was originally developed for improved resistance to corrosion in sulfuric acid or other reducing acids, but is now used in a wide range of applications. The alloy is readily available in most product forms. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: SS-927. Producer or source: Allegheny Ludlum Corporation.