Maxival 188HS is an enhanced machining version of AISI Type 303 stainless steel. The alloy has a specified inclusion picture to enhance machining by modifying both sulfide and oxide inclusions. 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 machining. Filing Code: SS-1020. Producer or source: Valbruna Stainless Inc.

CarTech 303 is a free-machining austenitic stainless steel. The addition of sulfur to this 18-8 chromium-nickel austenitic stainless steel, which is ordinarily tough and difficult to machine, enhances the alloy’s machinability to the degree that it can be readily utilized for producing parts on automatic screw machines at about 70% of the speed of SAE 1212. This sulfur modification has led to widespread acceptance and use of this grade in the screw machine industry. 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-1337. Producer or source: Carpenter Technology Corporation.

Maxival AU188Z is an enhanced-machining version of AISI Type 303 stainless steel. The alloy has a specified inclusion picture to enhance machining by modifying both sulfide and oxide inclusions. It’s widely used in applications where the machinability is the most important factor of choice in terms of cost-saving in the production of pieces using multi-spindles and screw machines. This datasheet provides information on composition, hardness, and tensile properties. It also includes information on forming and machining. Filing Code: SS-982. Producer or source: Valbruna Stainless Inc.

UNILOY 303 and 303Se are improved machinability grades of 18-8 general purpose austenitic stainless steels. Machinability is respectively improved by additions of sulfur or selenium. Whereas standard 18-8 stainless steel had a machinability rating about 40-50% that of AISI B1112 free-machining carbon steel, these steels have a rating of about 70% that of AISI B1112. UNILOY 303Se is preferred over UNILOY 303 where machined finish and good cold formability and corrosion resistance are desired. 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, and joining. Filing Code: SS-512. Producer or source: Cytemp Cyclops.

Carlson Alloy 303 is an austenitic chromium-nickel stainless steel to which elements such as sulfur have been added to improve machinability and nonseizing characteristics. The steel is the most readily machinable of all austenitic chromium-nickel grades and is suitable for automatic screw machines. 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-1098. Producer or source: G.O. Carlson Inc..

Atlas 303 is a free-machining austenitic stainless steel. It is primarily used when production involves extensive machining in automatic screw machines. The sulfur addition which is responsible for the improved machining and galling characteristics of Atlas 303 lowers its corrosion resistance to below that of type 304 austenitic stainless steel. Compared with the other austenitic grades, Atlas 303 has excellent toughness, although its sulfur content reduces its toughness slightly. 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, machining, and joining. Filing Code: SS-1351. Producer or source: Atlas Steels.

ATI 303 is a free-machining stainless steel specifically designed to exhibit improved machinability. It is the free-machining modification of the basic 18% chromium-8% nickel stainless steel. Sulfur is added to produce the free-machining characteristics. The good mechanical and corrosion-resistant properties of the lower-sulfur grade are retained to the extent possible. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1361. Producer or source: ATI.

Sandvik 5RA50 is an austenitic chromium nickel stainless steel to which an element has been increased to improve machinability. The alloy is suitable for automatic screw machines. See also Sandvik Sanmac 304L (Alloy Digest SS-585, March 1995). 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 joining. Filing Code: SS-678. Producer or source: Sandvik.

Prodec Type 303 is a standardized resulfurized grade available in billet and bar. It has an improved machining capability over the conventional AISI Type 303 and is a product of extensive laboratory testing and application proven. The improved machinability offers shorter machining time, longer tool life, better surface finish, less distortion problems, more homogeneity in microstructures, and marginally increased resistance to 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, machining, and joining. Filing Code: SS-967. Producer or source: Outokumpu Stainless Inc.

Ugima 4305 HM is general-purpose, corrosion resistant austenitic stainless steel with improved machinability. Its corrosion resistance is typical of an austenitic steel and is similar to that of the 4305 or 303. 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: SS-1166. Producer or source: Schmolz + Bickenbach USA Inc..

Sanmac 4305 (also designated as Sanmac 303 or Sanmac 4305/303) is an austenitic stainless steel with improved machinability. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-936. Producer or source: Sandvik Steel Company.

NIROSTA 4305 is an austenitic alloy with a high sulfur content. The alloy is typically used for machined parts. As with other austenitic steels, it is necessary to machine with good-quality high-speed steel or tungsten carbide tools. 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: SS-854. Producer or source: ThyssenKrupp Nirosta GmbH.

Carpenter Project 70+ Type 303 stainless is a modified version of Carpenter Stainless No. 8. The alloy is a hardenable austenitic chromium-nickel steel and is a good general-purpose product for simple and complex parts. See also Project 70/Project 7000 stainless type 303, Alloy Digest SS-409, revised June 1997, and Project 70/Project 7000 stainless type 303DQ, Alloy Digest SS-428, June 1983. 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-884. Producer or source: Carpenter Specialty Alloys.

UGIMA NSU and UGIMA 303 are the same grades designated differently for the European and North American markets, respectively. They are resulfurized grades with calcium added. Carefully controlled steelmaking results in a composition with oxides that have a low melting point and produce a lubricating effect during machining. Gains in the cutting conditions of 25 to 50% are typical on computer numerical control (CNC) lathe or classical machine work. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-709. Producer or source: Ugine-Savoie. Originally published March 1998, revised September 1998.

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.

CRUCIBLE 303 CC is an austenitic stainless steel with an outstanding combination of good machinability and resistance to taste and odor problems in beverage applications. Its chemistry was designed especially for use in the manufacture of fittings for soft-drink beverage dispensers. Typical applications include-screw-machine products and bar and fountain accessories. 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, and joining. Filing Code: SS-385. Producer or source: Crucible Specialty Metals Division, Colt Industries.

PROJECT 70 STAINLESS TYPE 303DQ is a modification of Project 70 Stainless Type 303 (Alloy Digest, SS-409, revised June 1997). Type 303DQ is designed and processed to optimize drilling and cut-thread tapping machining operations. Compared with regular Project 70 Stainless Type 303, the Type 303DQ modification will allow faster feeds and speeds, longer drill and tap life and less tap breakage. This datasheet provides information on composition, physical properties, hardness, 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-428. Producer or source: Carpenter.

Project 70 stainless type 303 and Project 7000 stainless type 303 are free-machining stainless steels of the austenitic chromium-nickel type. They offer significantly improved machinability and longer tool life. These steels are suited particularly for automatic bar-machine and Swiss-type machine operations where longer tool life results in more productive machining time. Applications include shafts, valve bodies, valves, valve trim, and fittings. This datasheet provides information on composition, physical properties, hardness, 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: SS-409. Producer or source: Carpenter. Originally published June 1982, revised June 1997.

AL Tech 203EZ and 303EZ are non-magnetic, austenitic, free-machining stainless steels specifically designed for use in high-speed, automatic machining operations. These modifications retain, in so far as possible, the good mechanical properties and corrosion resistance of the basic compositions which they represent. Sulfur or selenium is added to produce the free-machining characteristics. Data are typical; do not use for specification or final design. This datasheet provides information on composition, physical properties, 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-358. Producer or source: AL Tech Specialty Steel Corporation.

Modern metallurgy has learned how to produce chip beakers in brass without lead which produces an alloy safe for humans and the environment, particularly potable water. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as casting, forming, and machining. Filing Code: CU-778. Producer or source: Mitsubishi Shindoh Company Ltd.