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.

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 29-4-2 alloy is a high-purity ferritic stainless steel designated to provide superior resistance to corrosion by aggressive environments. It also offers fabrication characteristics that (along with E-BRITE Alloy) are unique among highly alloyed ferritic materials. The combination of properties available in AL 29-4-2 alloy makes it an attractive, cost-effective alternative to titanium, high-nickel and nickel-base alloys for many harsh environments. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-480. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM 430F is a low carbon, high chromium ferritic stainless steel with good machinability and corrosion resistance. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-277. Producer or source: Allegheny Ludlum Corporation.

AL 29-4C is a highly corrosion resistant alloy with a relatively high strength. This combination allows the use of lighter gage tubes, and has led to its use in the brine heat exchangers of geothermal power plants. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SS-554. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM TYPE 446 is a corrosion and heat resisting steel with the maximum chromium content. It is used principally for the manufacture of parts that must resist high temperature service without scaling. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-245. Producer or source: Allegheny Ludlum Corporation.

Allegheny Stainless Type 205 is a chromium-manganese nitrogen austenitic high strength stainless steel that maintains its low magnetic permeability even after large amounts of cold working. Annealed Type 205 has higher mechanical properties than any of the conventional austenitic steels-and for any given strength level, the ductility of Type 205 is comparable to that of Type 301. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: SS-640. Producer or source: Allegheny Ludlum Corporation. Originally published March 1996, revised October 1997.

Type 202 is the basic chromium-nickel-manganese type and offers excellent resistance to a wide variety of corrosive media. Its corrosion resistance and mechanical properties are comparable to those of Type 302. 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 heat treating. Filing Code: SS-644. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum Type 303 stainless steel is a free-machining austenitic stainless steel, which retains almost all of the basic 18 chromium-8 nickel stainless steel properties. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: SS-794. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY LUDLUM EXOHARD is an ultrahard high-speed tool steel (AISI Type M47) suited for machining hard and otherwise difficult-to-machine materials. This datasheet provides information on composition, physical properties, and hardness as well as fracture toughness. It also includes information on wear resistance as well as heat treating, machining, and joining. Filing Code: TS-234. Producer or source: Allegheny Ludlum Corporation.

Allegheny Ludlum Type 334 is an austenitic stainless steel with alloying elements of aluminum and titanium. These additions, along with its higher chromium and nickel levels, give the alloy excellent strength and oxidation resistance, especially when compared to Type 304 stainless steel. Applications include sheathing for electric heating elements. 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-833. Producer or source: Allegheny Ludlum Corporation.

AL 800 is a nickel-iron-chromium alloy designed to resist oxidation and carburization at elevated temperatures. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-712. Producer or source: Allegheny Ludlum Corporation.

Type 418 Special is a corrosion and heat-resistant stainless steel recommended for high temperature applications that require good mechanical properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-130. 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 Type 305 (S30500) stainless steel is used for applications requiring a low rate of work hardening during severe cold-forming operations such as deep drawing. 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 heat treating and joining. Filing Code: SS-840. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY STAINLESS TYPE 410 is a hardenable 12% chromium type of stainless steel. It has good resistance to corrosion and oxidation and offers a wide range of mechanical properties obtainable by heat treatment. It has such a high hardenability that it can be hardened readily by air cooling and it may be tempered at temperature up to 1350 F to produce high impact resistance. Among its many applications are knives, mechanical blades and other miscellaneous cutting tools for numerous corrosive environments. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: SS-388. Producer or source: 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.

Allegheny 203EZ is a free-machining chromium-nickel-manganese austenitic stainless steel recommended for high-speed automatic screw machine products. 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-226. Producer or source: Allegheny Ludlum Corporation.

ALLEGHENY METAL 350 is a chromium-nickel-molybdenum stainless steel developed to bridge the gap between the 300 and 400 series. It can be hardened by heat treatment. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-29. Producer or source: Allegheny Ludlum Corporation. Originally published May 1955, revised June 1963.

APACHE is an air-hardening, cold-work die steel that exhibits less distortion during heat treatment than water or oil-hardening steel and many other air-hardening steels. Its low-distortion characteristic makes it attractive for applications where close size tolerance is important. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-295. Producer or source: Allegheny Ludlum Corporation.