Aluminum Round Bar Product Range
Aluminum round bar is available in diameters from 6 mm to 800 mm, with rectangular bar from 10 mm to 400 mm and other bar forms such as square and angle on request. The material is supplied in grades from the 1000 to 7000 series, including 1050, 1060, 1070, 1100, 3003, 3105, 3004, 5052, 5005, 5083, 5754, 6061, 6082, 6063 and 8011, with both numeric and letter-prefixed designations. Common surface treatments are degreasing, anodizing and mill finish, and standard production conforms to specifications such as GB/T 3191, ASTM B221, ASTM B211, BS 1474, ISO 209, EN 573 and JIS H4000.
The 1000 Series: Pure Aluminum Uses
Pure aluminum bar in the 1000 series serves applications where purity, conductivity or appearance matters more than strength. 1050 is used for insulation, the food industry, decoration, lamps and traffic signs. 1060 appears in fan blades, lamps and lanterns, capacitor shells, auto parts and welding parts. 1070 is found in capacitors, the rear panels of vehicle refrigerators, charging points and heat sinks, and 1100 suits cookers, building materials, printing, heat exchangers and bottle caps.
The 2000 and 3000 Series
The 2000 series, led by 2A12, 2014, 2024 and 2017, is hardened by copper and used for aircraft structures, rivets, aviation parts, machinery, missile components, wheel hubs, propeller components and other structural parts. The 3000 series, led by 3003, serves aluminum curtain wall panels, ceilings, electric cooker bottoms, TV LCD backboards, storage tanks, heat sinks, billboards, industrial flooring, air conditioning and refrigerator radiators, makeup boards and prefabricated houses.
The 5000 Series: Marine and Transport
The 5000 series is the aluminum-magnesium family for demanding service. 5005 is used for marine applications, the bodies of boats, buses, trucks and trailers, and curtain wall panels. 5052 serves marine and transportation material, railway carriage inner and outer cabinets, oil and chemical storage devices, equipment and medical device panels. 5083 is the classic grade for tankers, oil storage tanks, drilling platforms, shipboard, deck and bottom plating, welded parts and edge panels, railway carriage boards, automotive and aircraft panels, cooling devices and automotive moldings. 5754 appears in tanker bodies, marine facilities, pressure containers and transportation.
The 6000 and 7000 Series
The 6000 series combines magnesium and silicon. 6005 is used for railway inside and outside parts, boards, bed plates, roofing, transportation, marine, mold work, auto parts, architectural fabrication, window and door frames, aluminum furniture, electronic components and consumer durables, with 6060, 6061, 6063, 6082 and 6101 covering the general range. The 7000 series adds zinc: 7005 suits trusses, rods and containers in transport vehicles and large heat exchangers, 7050 is specified for molding tools, ultrasonic welding molds, golf heads, shoe molds, lost wax molds, templates and fixtures, and 7075 covers the aerospace industry, general industry and electronics.
Supply and Ordering Terms
Standard export packing is PP bags or wooden boxes, and other packing can be arranged on request. Delivery time is typically 7 to 15 days after order confirmation, and payment commonly requires a 30 percent T/T deposit with the balance by L/C or against a copy of the bill of lading. Samples are generally provided free of charge with the customer paying the shipping cost, OEM specifications can be customized, and quotations are issued promptly once the alloy, size, quantity and destination are specified.
FAQ
Which aluminum round bar is strongest?
The 7000 series, especially 7075 in T6 temper, offers the highest strength and is used in aerospace and high-load applications. The 2000 series such as 2024 is the next strongest, while 6061-T6 is the practical high-strength choice for general industry.
What is 12 mm round bar used for?
A 12 mm bar is a versatile size used for machined parts, fasteners, fittings, spindles, axles and structural elements in transport, machinery and architectural fabrication. The alloy should be chosen to match the strength and corrosion requirements of the part.
Can round bar be supplied anodized?
Yes. Anodizing is a standard surface option, and the 6000 series in particular gives a uniform, attractive film. Coating thickness and color should be specified according to the application standard.
What is the difference between 6061 and 6063 bar?
6061 is stronger, more machinable and weldable, making it the general-purpose structural grade. 6063 has better extrudability and a smoother anodized finish, making it popular for architectural and decorative parts where appearance matters.
What standards cover aluminum round bar?
Common specifications include GB/T 3191, ASTM B221 and ASTM B211, BS 1474, ISO 209, EN 573 and JIS H4000. The applicable standard should be agreed with the supplier so that composition, mechanical properties and tolerances are documented.
Q: Which aluminum round bar is strongest?
2024-T351 and 7075-T6 are the strongest common bar grades: 2024-T351 about 325 MPa yield and 7075-T6 about 505 MPa. 6061-T6 follows at about 275 MPa, and 3003 is the softest of the group.
Q: What is 12 mm round bar used for?
12 mm bar is a common size for machined pins, fasteners, spacers, frames and small structural parts. 6061-T6 is the default for general machining, 2024 for aerospace hardware, and 3003 for corrosion-resistant non-machined duty.
Q: Can round bar be supplied anodized?
Yes, 6061 and 6063 bar anodize well to clear, black or bronze finishes. 2024 and 7075 anodize unevenly due to copper content, so they are usually hard-anodized dark or coated instead.
Q: What is the difference between 6061 and 6063 bar?
6061 has higher strength, about 275 versus 215 MPa yield, and machines better; 6063 has a smoother, brighter anodized finish and better extrusion detail. For machined bar, 6061; for visible architectural parts, 6063.
Q: What standards cover aluminum round bar?
ASTM B211 for rolled and drawn bar, ASTM B221 for extruded bar, GB/T 3191 and EN 755 are the common standards. Buyers specify alloy, temper, diameter tolerance and surface condition.