ALLEGHENY LUDLUM 316 and 316L are acid resistant, molybdenum type 18-8 stainless steels. Type 316L is the low carbon grade of Type 316 offering decreased carbide precipitation. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-48. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum 316 and 316L are corrosion resistant, molybdenum bearing austenitic stainless steels. Type 316L is the low carbon grade of type 316 offering decreased carbide precipitation. The MINIMISER form is an improved machinability version with a change in the sulfur composition, still maintaining the dual certification capability of the base type 316/316L grades. Like standard 316 and 316L stainless steels, MINIMISER 316/316L is more resistant to acids and pitting/crevice corrosion than the molybdenum-free 18-8 type stainless steels. This datasheet provides information on composition, physical properties, microstructure, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-776. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM AL 2205 ALLOY is in the family of duplex alloys in which added nitrogen significantly improves corrosion resistance, especially in the welded condition. The microstructure consists of a balanced mixture of austenitic and ferritic phases. Its corrosion resistance to many environments is superior to Types 316 or 317 and it has a yield strength more than double that of AISI conventional austenitic stainless steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: SS-462. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum AL 17-4 Precipitation Hardening Alloy is a chromium-nickel-copper stainless steel. It maintains high strength to about 600 F (316 C) and it exhibits a moderate level of corrosion resistance. 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, and joining. Filing Code: SS-497. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum alloy 255 is a high-strength duplex stainless steel. It combines high mechanical strength, ductility, and hardness with excellent resistance to corrosion and erosion. Under most conditions of service, its corrosion resistance is superior to that of the fully austenitic AISI type 304, 316, and 317L stainless steels. Its many uses include marine scrubbers, desalination equipment, sulfuric acid production, wet phosphoric acid production, mild sour gas wells, urea production, and applications in the pulp and paper industry. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, machining, and joining. Filing Code: SS-786. Producer or source: Allegheny Ludlum Corporation. Originally published May 2000, revised June 2002.

ALLEGHENY LUDLUM AL-6X is an austenitic chromium-nickel-molybdenum stainless steel specifically designed for outstanding resistance to pitting and crevice attack in chloride-containing solutions. It possesses good ductility, high impact values and good weldability. It is an ideal material for condenser tubing. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-349. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum AL 825 alloy is a nickel-iron-chromium-molybdenum-copper alloy with superior corrosion resistance including stress-corrosion cracking resistance. It is highly ductile from cryogenic to well over 1000 F(538 C) temperatures. It is readily weldable. 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: Ni-366. Producer or source: Allegheny Ludlum Corporation.

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.

ALLEGHENY LUDLUM TYPE 439 is a stainless steel with a high resistance to chloride stress-corrosion cracking. It also has a high level of general resistance in steam and fresh-water environments. Its high level of chromium provides resistance to sulfidation and oxidation. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-470. Producer or source: Allegheny Ludlum Corporation.

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.

Allegheny Ludlum AL600 alloy is a nickel-chromium alloy designed for use from cryogenic up to 2000 F(1093 C) temperatures. Its nickel content provides resistance to reducing environments and stress-corrosion cracking. Its chromium affords resistance to mildly oxidizing conditions. It has excellent resistance to oxidation to about 2000 F(1093 C). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-370. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM E-BRITE 26-1 ALLOY is a low-carbon, low-nitrogen ferritic stainless steel made by a vacuum refining process. It provides: (1) Excellent resistance to pitting and crevice corrosion in chloride-containing environments, (2) Excellent resistance to chloride stress-corrosion cracking, (3) Resistance to intergranular corrosion, (4) Resistance to a wide variety of corrosive environments, and (5) Improved toughness and ductility after welding. Its applications include equipment for handling caustic, organic acids, nitric acid, bleach solutions, urea and chloride containing cooling waters. This datasheet provides information on composition, physical properties, microstructure, hardness, 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, and joining. Filing Code: SS-360. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum AL276 is widely used in the most severe environments found in chemical plants and in power plant desulfurization systems. The high molybdenum level with tungsten gives excellent pitting and crevice corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Ni-497. Producer or source: Allegheny Ludlum Corporation.

Type 310L is similar to Allegheny Ludlum Type 310 (see Alloy Digest SS-719, June 1988) except that it has a very low carbon content. This change enhances corrosion resistance to strong oxidizing acids. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance. Filing Code: SS-836. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM Type 29-4 is a low-interstitial ferritic stainless steel. It contains approximately 29% chromium and 4% molybdenum. The alloy provides excellent resistance to pitting, crevice corrosion, and stress-corrosion cracking in chloride-containing environments. Type 29-4 is used widely for chemical processing equipment because of its excellent resistance to corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-362. Producer or source: Allegheny Ludlum Corporation.

TYPE 317L, 317LX, and 317LXN are austenitic alloys with varying molybdenum and nitrogen contents and thus have varying levels of resistance to pitting corrosion. All are low carbon to resist sensitization. All three alloys are intended for severe service conditions such as flue gas desulfurization systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-542. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum AL 400 is a ductile nickel-copper alloy with resistance to a variety of corrosive conditions. The alloy is not hardenable by heat treatment. It can be appreciably strengthened by cold work. 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, and joining. Filing Code: Ni-374. Producer or source: Allegheny Ludlum Corporation.

AL 800H and AL 800AT are nickel-iron-chromium alloys designed to resist oxidation and carburization at elevated temperatures. This datasheet provides information on composition, physical properties, 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-717. Producer or source: Allegheny Ludlum Corporation.

ATI 50 Alloy is an austenitic stainless steel strengthened with nitrogen. It is superior to AISI Type 316L in both strength and corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1103. Producer or source: ATI Allegheny Ludlum Corporation.

Allegheny Ludlum Type 425 Mod is hardenable by heat treatment. This straight-chromium grade is used where strength, hardness and/or wear resistance need to be combined with corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: SS-806. Producer or source: Allegheny Ludlum Corporation.