What 7005 Aluminum Alloy Is
7005 is a medium-strength aluminum alloy in the 7000 series, strengthened mainly by zinc and magnesium and classified as heat-treatable. Unlike the higher-strength aerospace grades such as 7075, 7005 is designed for a practical balance: it offers useful strength after heat treatment while remaining formable enough for complex sections. It is also formulated for good welding response and for standard decorative anodizing, which makes it attractive wherever a strong, light, attractive finish is required.
Key Properties
The alloy is suitable for very complex cross sections, which means it can be extruded into intricate profiles that would be difficult or costly in other grades. It responds well to heat treatment, allowing strength to be adjusted to the application, and it takes an anodized coating with consistent color and appearance. The combination of medium strength, formability, weldability and anodizing quality is what separates 7005 from the softer 1000 and 3000 series on one side and the harder, less formable 7075 on the other.
Racket and Sports Equipment Applications
In sports equipment, 7005 is used for racket frames and related components where the frame must be light, stiff enough to transmit energy, and capable of being formed into thin, rounded sections. The same combination of strength and formability suits bicycle frames and other sporting goods, where welded joints must hold under repeated loading. Bar stock in this alloy is machined or formed into the final part, and the anodized finish provides both decoration and wear protection.
Other Common Applications
Beyond sports equipment, 7005 bar and profile are used for windows, doors and curtain walls, interior fittings, frame systems, lighting, ladders and railings. The alloy also appears in heat sink sections, electronic modules and electric motor housings, where thermal conductivity and precise extrusion tolerances matter. In transport and industrial equipment it is specified for truck and trailer flooring, pneumatic installations, railway interiors, irrigation pipes, furniture, office equipment, and radiators and other heat exchangers.
Forms, Sizes and Finishes
7005 is supplied as round bar and other bar forms to standards such as ASTM, JIS, DIN, GB and EN, alongside other alloys including 1060, 1100, 2024, 3003, 5050, 5083, 5154, 5454, 5086, 5056, 5754, 6061, 6063 and 7075. Diameters range from 3 mm to 800 mm and lengths from 1 m to 12 m, with custom dimensions available. Surface options include anodizing, brushing, sand blasting, powder coating, polishing and mill finish, and standard export packing suits all transport methods.
Ordering Considerations
When ordering bar in 7005, specify the alloy, temper, diameter or section, length and surface finish, together with the quantity and delivery point. Third-party inspection is accepted, and documentation such as mill certificates can be provided for material verification. Lead times typically range from 10 to 30 days depending on quantity, and payment terms commonly require a deposit in advance with the balance before dispatch.
FAQ
Is 7005 stronger than 6061?
In heat-treated tempers, 7005 generally offers higher strength than 6061-T6, which is why it is chosen for frames and equipment that must be light and stiff. 6061 remains more common for general fabrication because of its good machinability and availability.
Can 7005 be welded?
Yes. 7005 is designed with good weldability for a 7000-series alloy and is used in welded structures such as bicycle frames and transport components. Welding practice and filler selection should follow the manufacturer's recommendations for the alloy.
Does 7005 anodize well?
Yes. Standard decorative anodizing quality is one of the selling points of 7005, giving a consistent appearance suitable for architectural and consumer products. Color and coating thickness should be agreed with the anodizer.
What is the typical diameter range for 7005 round bar?
Round bar is commonly supplied from 3 mm to 800 mm diameter with lengths from 1 m to 12 m, and custom sizes can be produced to the customer's requirement.
Is 7005 suitable for heat sinks?
Yes. The alloy is used for heat sink sections and electronic modules where strength and precise extrusion shape matter, and the anodized finish can also improve emissivity for thermal management.