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Aluminum Bars Selection Guide
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ROD, BAR AND WIRE (COLD FINISHED) - 2011
This free machining alloy compares favorably with free cutting brass. It is the most suitable alloy for machining on automatics, milling machines, lathes, planers, shapers and other machine tools, and is the most widely used alloy for all types of screw machine parts. It can be machined at high speeds and comparatively heavy feeds. Machined surfaces are bright and smooth. Mechanical finishes readily match joined parts. Mechanical properties and hardness are excellent; corrosion resistance fair. Weldability by resistance method is fair; other welding is not recommended.
ROD, BAR AND WIRE (COLD FINISHED) - 2024
Known as the “aircraft alloy” in machining rod, this alloy has properties higher than 2017 and 2014. Though formability is generally considered only fair in the cold state, it is one of the most popular alloys for cold heading and roll threading applications. Can be machined to a high finish. Corrosion resistance is fair. Applications include Phillips head screws, wood screws, hydraulic fittings and small parts in clocks and meters. It is also the basic alloy for cold finished rectangular bar where strength and machinability are essential for precision fittings and parts.
ROD, BAR AND WIRE (COLD FINISHED) - 6042
6042 and 6064 are Rohs compliant extruded 6000 series alloys. 6042 and 6064 are controlled lead alloys that offer improved machinability ratings over 6061 as well as good corrosion resistance. Both have similar machinability characteristics when compared to 6262, but are Rohs and IMDS/ELV compliant and can be used in place of 6262 extruded products.
ROD, BAR AND WIRE (COLD FINISHED) - 6061
Generally selected where welding or brazing is required, or for its particularly high corrosion resistance in all tempers. Formability is excellent in 0 temper, good in T4. Machining is more difficult than with other machining alloys; it is particularly gummy in 0 condition, fair in hard tempers. Corrosion resistance and appearance after anodizing are highest of screw machine alloys, though properties are generally lower. Applications include railway car components, bridge components, pipe fittings, wheels and various transportation end uses.
ROD, BAR AND WIRE (COLD FINISHED) - 6061
Transportation, structural pipe, furniture applications. Most versatile of heat-treatable group. Will take considerable forming in T4 temper. Good resistance to corrosion. Widely used for structural tube, handrails and baggage racks where moderate strength is required.
ROD, BAR AND WIRE (COLD FINISHED) - 6063
Has best all-around extruding properties. Can be used for comparatively intricate sections; excellent for hollow extrusions and architectural applications. Takes a good surface finish, is corrosion resistant and can be anodized. Its strength, as extruded, is somewhat higher than that of 3003. It can be precipitation heat-treated to strengths just under 6061 alloy. In tube form it is used for irrigation pipe, furniture, electrical conduit, and handrails.
ROD, BAR AND WIRE (COLD FINISHED) - 7075/7175
7075 has been the strongest and hardest alloy sold commercially for decades. 7175 is more pure, but may not be suitable for fracture toughness applications. The superior stress corrosion resistance of the T73 and T7351 tempers of 7075 rolled or cold finished rod have made them a logical replacement for alloys 2014, 2017 and 2024 in many of the most critical applications. In machined parts and forgings it is used primarily in aircraft, ordnance, highly stressed structural applications, keys, small gears, etc. It is more difficult to forge than other alloys, but is often selected because of its properties. Machinability is good, resistance welding satisfactory, finishing characteristics excellent, and corrosion resistance fair.
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