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.

Type 316L (UNS S31603) is an austenitic chromium-nickel stainless and heat-resisting steel with superior corrosion resistance to other chromium-nickel steels when exposed to many types of chemical corrodents, as well as marine atmospheres. Carbide precipitation as a result of welding in this low carbon version will be minimized, resulting in less susceptibility to intergranular corrosion. 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-900. Producer or source: J & L Specialty Steel Inc.

Remanit 4404 is an 18 Cr-8 Ni + molybdenum type corrosion-resistant stainless steel that offers decreased carbide precipitation, and has good resistance to acids. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and heat treating. Filing Code: SS-698. Producer or source: Thyssen Stahl AG.

Nirosta 4550 contains an addition of niobium, which produces a stabilized type of stainless steel with protection from the chromium carbide precipitates that cause intergranular corrosion. The alloy is recommended for welded parts that cannot be annealed after welding. 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: SS-791. Producer or source: ThyssenKrupp Nirosta.

Allegheny Ludlum 304 and 304L are corrosion resistant type 18-8 stainless steels. Type 304L is the low carbon grade of Type 304 offering decreased carbide precipitation. The MINIMISER form is an improved machinability version, mostly by a change in the sulfur composition, but still maintaining the dual certification capability of the base Type 304/304L grades. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-805. Producer or source: Allegheny Ludlum Corporation.

Types 309 and 309S are austenitic chromium-nickel stainless steels that provide excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. Type 309S is identical to Type 309 except for a lower carbon content that minimizes carbide precipitation and improves weldability. Typical uses include furnace parts, heating elements, aircraft and jet engine parts, heat exchangers, carburizing-annealing boxes, sulfite liquor handling equipment, kiln liners, boiler baffles, refinery and chemical processing equipment, and auto exhaust parts. 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 forming, heat treating, machining, and joining. Filing Code: SS-853. Producer or source: AK Steel Inc.

UHB Stainless 44L is a high-strength, corrosion-resistant steel with a duplex structure of about 40% austenite in a ferrite matrix. It is produced with extra-low carbon content for good weldability and good resistance to embrittlement and corrosion induced by carbide precipitation. It has excellent stress-corrosion resistance and an optimum combination of strength and toughness. 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 forming, heat treating, machining, and joining. Filing Code: SS-288. Producer or source: Uddeholm Aktiebolag.

Carpenter Stainless 20Cb-3 is an austenitic stainless steel designed for improved resistance to sulfuric acid. It finds wide use in all phases of the chemical industry. It has good mechanical properties and comparative ease of fabrication. Columbium stabilizes the alloy to minimize carbide precipitation during welding. 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-182. Producer or source: Carpenter.

NAS NW22 is a Ni-Cr-Mo alloy with excellent corrosion resistance in both oxidizing and reducing atmospheres. In this alloy, carbide precipitation in the heat affected zone (HAZ) is suppressed, and corrosion resistance is improved by reducing the contents of C and Si. Based on these features, NAS NW22 is widely used in materials under severe environments such as chemical plants. 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: Ni-696. Producer or source: Nippon Yakin Kogyo Company Ltd.

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.

EMPIRE CF-3M is a superior stainless steel casting alloy recommended for welded fabrications because of freedom from carbide precipitation. It is equivalent to A. C. I. CF-4M (American Casting Institute designation). This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-61. Producer or source: Stainless steel foundries.

ENDURO 18-8STi is the titanium-type 304 stainless steel stabilized by titanium. It is not made sensitive to intergranular corrosion by heating within the carbide precipitation range. It is recommended for use at temperatures up to 1600 F. 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, joining, and surface treatment. Filing Code: SS-149. Producer or source: Republic Steel Corporation.

EMPIRE CF-3 is an austenitic chromium-nickel stainless steel casting alloy recommended for welded fabrications because of freedom from carbide precipitation. 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 casting, heat treating, machining, and joining. Filing Code: SS-161. Producer or source: Stainless steel foundries.

HASTELLOY alloy B-2 has outstanding corrosion resistance in the as-welded condition. It is an improved wrought version of HASTELLOY alloy B with the same excellent corrosion resistance as alloy B, but with improved resistance to knife line and heat-affected zone attack. Alloy B-2 resists the formation of grain-boundry carbide precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. This alloy also has excellent resistance to pitting and stress-corrosion cracking. 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, machining, joining, and surface treatment. Filing Code: Ni-249. Producer or source: Stellite Division, Cabot Corporation.

EASTERN STAINLESS Type 347 contains an addition of columbium which produces a stabilized type of stainless steel free from the chromium carbide precipitates that cause intergranular corrosion. It is recommended for welded parts which cannot be annealed after welding. It is also used for parts which are intermittently heated and cooled to temperatures between 800 and 1600 F. Its many applications include exhaust manifolds, expansion and high-pressure steam pipes. 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, joining, and surface treatment. Filing Code: SS-390. Producer or source: Eastern Stainless Steel Company.

Sandvik 3R60 is an acid resistant austenitic stainless steel. It has a low carbon content to offer decreased carbide precipitation and increased intergranular corrosion resistance. 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-636. Producer or source: Sandvik.

Remanit 4301 is a general-purpose austenitic stainless steel. It has more chromium and nickel that Type 302, but less carbon in order to reduce chromium carbide precipitation. This grade constitutes slightly more than 25% of all stainless production. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on forming, heat treating, and joining. Filing Code: SS-642. Producer or source: Thyssen Stahl AG.

Jessop JS alloy 20 was designed primarily for resistance to sulfuric acid attack. It also resists pitting and stress-corrosion cracking. It is columbium-stabilized to minimize carbide precipitation during welding. Often spoken of as one of the Super Stainless Steels, it carries a nickel alloy UNS number. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-371. Producer or source: Jessop Steel Company. Originally published April 1989, revised July 1991.

EASTERN STAINLESS Type 321 is a titanium-bearing steel designed to be free from the harmful chromium carbide precipitation (and associated intergranular corrosion) after welding or after an extended period of time in the sensitizing temperature range (800-1600 F). Type 321 is used primarily within this sensitizing (damaging) temperature range; however, its carbon combines preferentially with titanium leaving chromium in solution to maintain full corrosion resistance. Among its applications are high-temperature steam service, chemical plants and heavy-duty aircraft exhaust manifolds. 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, joining, and surface treatment. Filing Code: SS-396. Producer or source: Eastern Stainless Steel Company.

EASTERN STAINLESS TYPE 348 is a stabilized type of stainless steel free from the chromium carbide precipitates that cause intergranular corrosion. It is recommended for welded components that cannot be annealed after welding. It also is used for parts that are heated and cooled intermittently to temperatures between 800 and 1600 F. Type 348 is stabilized by an addition of columbium. Tantalum is restricted to 0.10% maximum and cobalt is restricted to 0.20% maximum. Because of these restrictions, Type 348 is recommended for use in applications such as those encountered in radioactive service. 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, joining, and surface treatment. Filing Code: SS-447. Producer or source: Eastern Stainless Steel Company.