7075 aluminum round bar is a top-tier aerospace alloy offering exceptional strength and hardness comparable to many steels. Supplied mainly in T6 and T651 tempers, it is the go-to choice for shafts, gears, and other critical high-stress components. Linsy supplies 7075 round bar in O, T6, T651, T73, and T7351 tempers with custom cutting, CNC machining, and anodizing support. Every order ships with an MTC report so you can verify composition and properties before production.
Available forms: round bar / plate / sheet
Common tempers: O / T6 / T651 / T73 / T7351
Processing support: CNC machining / cutting / anodizing / polishing
Quality documents: MTC report with every order
7075 aluminum round bar is a top-tier aerospace alloy offering exceptional strength and hardness comparable to many steels. Supplied mainly in T6 and T651 tempers, it is the go-to choice for shafts, gears, and other critical high-stress components.
Linsy supplies 7075 round bar across the common tempers. The size ranges below are typical; custom dimensions and tight tolerances can be quoted on request.
| Dimension | Typical Range |
| Diameter | 6 – 400 mm |
| Length | 1,000 – 6,000 mm (custom cut) |
| Tempers | O / T6 / T651 / T73 / T7351 |
| System | Designation |
| AA (USA) | 7075 |
| EN AW | EN AW-7075 |
| UNS | A97075 |
| ISO | AlZn5.5MgCu |
| Common tempers | O / T6 / T651 / T73 / T7351 |
| Element | Content (%) |
| Silicon (Si) | 0.40 max |
| Iron (Fe) | 0.50 max |
| Copper (Cu) | 1.2 – 2.0 |
| Manganese (Mn) | 0.30 max |
| Magnesium (Mg) | 2.1 – 2.9 |
| Chromium (Cr) | 0.18 – 0.28 |
| Zinc (Zn) | 5.1 – 6.1 |
| Titanium (Ti) | 0.20 max |
| Zirconium (Zr) | 0.25 max |
| Others (each) | 0.05 max |
| Others (total) | 0.15 max |
| Aluminum (Al) | Remainder |
Values below are typical AA reference figures for 7075 and should be confirmed against Linsy mill test data before specification.
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Shear Strength (MPa) |
| O | 230 | 105 | 10 | — |
| T6 | 570 | 505 | 11 | 330 |
| T651 | 570 | 505 | 11 | 330 |
| T73 | 525 | 470 | 11 | — |
| T7351 | 525 | 455 | 11 | — |
| Temper | When to use |
| O | Annealed, softest condition for forming; lowest strength. |
| T6 / T651 | Peak strength tempers for general high-stress parts; T651 adds stress relief for improved dimensional stability. |
| T73 / T7351 | Overaged tempers with improved corrosion resistance and reduced quench sensitivity; preferred for thick sections and corrosive environments. |
7075 is one of the strongest commercial aluminum alloys, with T6/T651 yield strength around 505 MPa.
Bare 7075 has moderate general corrosion resistance. The T73/T7351 tempers improve resistance to stress-corrosion cracking, especially in thicker sections.
Machinability is excellent in the T6 condition. Weldability is poor — fusion welding is generally not recommended; mechanical fastening or adhesive bonding is preferred.
7075 round bar can be CNC-machined, cut, and profiled to drawing. Anodizing is possible but offers limited corrosion benefit compared with 6xxx alloys; for corrosive service consider the T73 temper or a protective coating. Fusion welding is not advised — design for mechanical joining.
Every 7075 aluminum order ships with a Mill Test Certificate (EN 10204 3.1 MTC) confirming chemical composition and mechanical properties against the specified temper. In-process inspections cover dimensional tolerance, surface condition, and flatness or straightness as applicable. Third-party inspection and SGS test reports can be arranged on request for project-specific requirements.
For maximum strength use T6 or T651. For better corrosion resistance in thick or corrosive sections, choose T73/T7351.
Fusion welding of 7075 is generally not recommended due to cracking risk and strength loss. Mechanical fastening or bonding is preferred.
Yes. We cut to length and can machine to drawing. Provide required dimensions and tolerances in your RFQ.
Standard stock sizes are usually dispatched within 10–60 days depending on temper, quantity, and any custom processing. Confirm the exact schedule with our sales team when requesting a quote.
Yes. We cut to length, saw, and CNC-machine to drawing, and can source specific tempers on request. Provide your required dimensions and tolerance in the RFQ.
A Mill Test Certificate (MTC) is included with every order. SGS or other third-party inspection reports can be arranged when needed.
Common options include mill finish, anodizing, and polishing. Specific finishes should be agreed at the quotation stage.
Linsy Advantages
Linsy Aluminum is a leading supplier of aluminum processing products, serving diverse industries including aerospace, general engineering, automotive, marine, shipbuilding and other specialized industrial applications.
We are committed to maintaining the highest standards of quality and environmental responsibility, as demonstrated by our certifications: ISO 9001:2008， ISO 14001:2004 and SGS.
