Alcoa 2024 alloy has good machinability and machined surface finish capability, and is a high-strength material of adequate workability. It has largely superseded alloy 2017 (see Alloy Digest Al-58, August 1974) for structural applications. The alloy has comparable strength to some mild steels. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as machining and surface treatment. Filing Code: AL-346. Producer or source: ALCOA Wire, Rod & Bar Division.

Kaiser Aluminum alloy 2011 is one of the most popular screw machine stock alloys available. Tennalum, a division of Kaiser Aluminum, produces alloy 2011 in the T3 temper as Microchip II, which offers excellent machinability and surface finish. The chips from Tennalum’s Microchip II (T3 temper only) are known for being small in size. Alloy 2011 is typically used in connectors and fittings, brake pistons, computer parts, knobs, and meter shafts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: AL-352. Producer or source: Kaiser Aluminum Corporation.

Kaiser Aluminum Alloy 7075 has high mechanical properties and, in the T73 and T74 tempers, offers improved corrosion-cracking resistance. The alloy has good machinability. It is typically used in aircraft structural parts. (See also Alloy Digest Al-457, January 2019.) This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: AL-368. Producer or source: Tennalum, A Division of Kaiser Aluminum.

Atlas 302HQ is a chromium-nickel-copper austenitic stainless steel. It is a specialized wire grade with very wide usage for the manufacture of stainless steel fasteners. The inclusion of 3% copper in the composition reduces the cold work hardening rate substantially compared to type 304 austenitic stainless steel. Atlas 302HQ is the standard for the manufacture of self-tapping screws and light machine screws. It is also used for some bolts, set screws, rivets, and specialized fasteners. It has now totally replaced type 384 and type 305 austenitic stainless steels for cold heading applications, because Atlas 302HQ has relatively higher copper content which is used a lower-cost alternative to the high nickel contents in those alloys. 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-1350. Producer or source: Atlas Steels.

MUELLER COPPER 1470 is a high-conductivity copper to which sulfur has been added to provide free-machining characteristics. Thus it is well suited for screw-machine work. Its electrical conductivity and corrosion resistance approach those of copper but it has higher strength and better machinability. Among its many specific applications are plumbing fittings, electrical connectors, screws, cold-heated and machined parts and cold forgings. 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: Cu-440. Producer or source: Mueller Brass Company.

CARPENTER STAINLESS No. 5-F is a modification of AISI Type 416 stainless steel and was designed for an optimum combination of machinability and corrosion resistance. It comprises a specially balanced analysis and is essentially non-hardenable. It is recommended for all screw-machine applications, particularly those involving intricate machining operations or where superior finishes are required as-machined. Its uses include valve trim, carburetor needles and many other screw-machine parts. This datasheet provides information on composition, physical properties, hardness, 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, joining, and surface treatment. Filing Code: SS-275. Producer or source: Carpenter. Originally published July 1972, revised July 1980.

Copper Alloy No. C34000 is a medium-leaded brass characterized by an excellent combination of free-machining and cold-working properties. It is intended for screw-machine applications where excellent thread-rolling, knurling, machining and cold-forming properties are required. Among its many applications are gears, nuts, rivets, screws and threaded connectors. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-415. Producer or source: Copper and copper alloy mills.

MUELLER Alloy 3140 is a high-copper alloy with moderate strength, a rich bronze color and excellent corrosion resistance. Its lead content gives it excellent machinability which makes it suitable for screw-machine applications. Its uses include many screw-machine products, decorative hardware, pickling crates and parts to resist severe atmospheric conditions. 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: Cu-451. Producer or source: Mueller Brass Company.

MUELLER Alloy 3602 is a leaded brass of moderate strength and ductility. It is suitable for moderate thread rolling. Also, because of its free-cutting characteristics, it is suitable for high-speed screw-machine products. Among its many applications are hardware, unions, bolts, screws and nuts. 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: Cu-489. Producer or source: Mueller Brass Company.

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.

LA SALLE SERIES 83-420 is a low-carbon, bismuth-bearing, free-machining, cold-finished steel that does not contain lead, tellurium or selenium. Its excellent machinability is achieved by the addition of a special bismuth alloy. Series 83-420 reduces friction during machining and the chips break clean and small. This steel machines to a fine satin finish, can be carburized and performs well in cold-working operations such as roll threading, crimping, swaging and peening. It is recommended for automatic screw-machine operations. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: CS-107. Producer or source: LaSalle Steel Company.

Copper Alloy No. C33200 is a free-machining brass containing nominally 1.6% lead. Its machinability rating is 80% of that of Free-Cutting Brass. It has good resistance to corrosion in many environments. Alloy No. C33200 is used widely for general-purpose screw-machine products. 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: Cu-513. Producer or source: Brass mills.

Copper Alloy No. C33100 is a free-cutting tube brass. It has a good combination of mechanical properties. It has excellent solderability and good brazeability. Its uses include general-purpose screw-machine products, pump and power cylinders, plumbing accessories and primers in the munitions 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: Cu-517. Producer or source: Copper and copper alloy mills.

CDA C18700 is a copper-base alloy containing lead (nominally 1.0%). The lead is added to impart free-cutting properties to the metal. Although the lead lowers the electrical conductivity of CDA C18700 slightly below that of tough-pitch copper, it still has high electrical conductivity well within the limits needed for most current-carrying requirements. Typical uses comprise electrical motor and switch parts, electrical connectors and screw-machine parts requiring high conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-533. Producer or source: Copper and copper alloy mills.

UNS NO. C36000 is a leaded brass suitable for high-speed screw-machine work. It has many uses such as hardware, gears and pinions. Its trade names include free-turning brass, free-cutting yellow brass and high-leaded brass. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-536. Producer or source: Brass mills.

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.

Deltalloy 4032 has good machinability and drilling characteristics when using single-point or multispindle screw machines and an excellent surface finish using polycrystalline or carbide tooling. The alloy demonstrates superior wear resistance and may eliminate the need for hard coat anodizing. Deltalloy 4032 is characterized by high strength and a low coefficient of thermal expansion. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion and wear resistance as well as machining and surface treatment. Filing Code: AL-347. Producer or source: ALCOA Wire, Rod & Bar Division.

Kaiser Aluminum alloy 2014 is one of the strongest heat-treatable alloys for screw machine applications. The alloy has good machinability and high strength. Corrosion resistance is only fair. Weldability is good with arc and resistance methods. In many applications, this alloy can be substituted for 2024. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: AL-354. Producer or source: Kaiser Aluminum Corporation.

RAM 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, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-800. Producer or source: Rolled Alloys Inc.

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.