Description
7075 Aluminum Round Bar – Superior T6/T651 Aerospace Alloy
📖 Product Overview
The 7075 aluminum round bar is one of the highest-strength aluminum alloys commercially available, offering an unparalleled balance of strength, weight, and corrosion resistance. Developed initially for aerospace and defense industries, it remains a preferred choice for critical applications where performance, reliability, and machinability are essential.
Produced from a high-grade aluminum-zinc-magnesium-copper alloy, the 7075 bar combines exceptional tensile and yield strength with excellent fatigue resistance, making it suitable for both structural and precision-machined components. In its T6 and T651 tempers, it exhibits properties comparable to certain grades of steel, while being significantly lighter and easier to machine.
Unlike our 7075‑T6 Aluminum Block, which is optimized for large, precision‑machined components, the 7075 aluminum round bar offers unmatched tensile strength and fatigue resistance in a cylindrical form—ideal for shafts, pins, and structural rods used in aerospace, defense, and industrial applications.
Whether you are manufacturing aircraft structural parts, high-performance automotive components, or industrial tooling, the 7075 aluminum bar offers outstanding mechanical integrity and long-term durability.
🧪 Chemical Composition (ASTM B211)
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Zinc (Zn) | 5.1 – 6.1 |
| Magnesium (Mg) | 2.1 – 2.9 |
| Copper (Cu) | 1.2 – 2.0 |
| Chromium (Cr) | 0.18 – 0.28 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | ≤ 0.50 |
| Manganese (Mn) | ≤ 0.30 |
| Titanium (Ti) | ≤ 0.20 |
| Others (Each) | ≤ 0.05 |
| Others (Total) | ≤ 0.15 |
This precise composition gives the 7075 alloy bar its distinctive combination of high tensile strength, hardness, and corrosion resistance, making it ideal for harsh operating conditions.
⚙ Mechanical Properties – T6 & T651 Tempers
| Property | T6 Temper | T651 Temper |
|---|---|---|
| Tensile Strength | 572 MPa (83,000 psi) | 572 MPa (83,000 psi) |
| Yield Strength | 503 MPa (73,000 psi) | 503 MPa (73,000 psi) |
| Elongation | 11% | 10% |
| Brinell Hardness | 150 HB | 150 HB |
| Modulus of Elasticity | 71.7 GPa | 71.7 GPa |
| Shear Strength | 331 MPa (48,000 psi) | 331 MPa (48,000 psi) |
| Fatigue Strength | 159 MPa (23,000 psi) | 159 MPa (23,000 psi) |
| Density | 2.81 g/cm³ | 2.81 g/cm³ |
These figures highlight why the high strength aluminum bar is chosen for aerospace frames, military hardware, and heavy-duty tooling.
🔥 Heat Treatment & Tempers Explained
The 7075 t6 aluminum bar undergoes a solution heat treatment followed by artificial aging to achieve maximum strength. The T651 temper is stress-relieved by stretching, ensuring dimensional stability during machining.
This heat treatment process ensures that the aerospace grade 7075 bar maintains its mechanical integrity even under extreme loads and temperature variations, making it suitable for mission-critical applications.
💡 Advantages of 7075 Aluminum Round Bar
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Ultra-High Strength – Comparable to many steel grades while being 30–35% lighter.
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Excellent Fatigue Resistance – Maintains performance under cyclic stress.
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Outstanding Machinability – Ideal for CNC machining and tight tolerance parts.
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Corrosion Resistance – Especially when anodized or coated.
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Dimensional Stability – Maintains precision during and after machining.
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Versatile Applications – Suitable for aerospace, automotive, marine, and tooling.
✈ Applications of 7075 Aluminum Round Bar
The 7075 aluminum round bar is widely used in:
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Aerospace & Defense – Wing spars, fuselage frames, landing gear components.
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Automotive – Performance suspension parts, chassis components.
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Marine – High-speed vessel structures and fittings.
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Industrial Tooling – Molds, dies, precision jigs, and fixtures.
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Sports Equipment – Bicycle frames, climbing gear, archery equipment.
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Military Hardware – Firearm receivers, armor components.
📏 Available Sizes & Customization
We supply 7075 bar in diameters from 1 mm to 250 mm, with lengths up to 6000 mm. Custom sizes are available with machining tolerances down to ±0.02 mm.
| Diameter Range | Length Range | Temper Options |
|---|---|---|
| 1 mm – 250 mm | Up to 6000 mm | T6 / T651 |
🌍 International Standards & Equivalents
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GB/T 3191 – Chinese Standard for Aluminum Bars
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EN 573 / EN 755 – European Standards for Aluminum Rods
Equivalent designations:
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UNS A97075
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DIN AlZn5.5MgCu
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ISO AlZn5.5MgCu
🛠 Machining & Fabrication
The 7075 alloy bar machines beautifully, allowing for tight tolerances and complex shapes. It is compatible with drilling, milling, turning, and threading operations. For aerospace parts, the aerospace grade 7075 bar is often CNC machined and anodized to enhance corrosion resistance.
📦 Packaging & Shipping
To protect the integrity of the high strength aluminum bar during transport:
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Wrapped in anti-corrosion paper
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Placed in moisture-resistant plastic sleeves
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Secured in wooden crates for sea or air shipment
We provide full export documentation and certificates of compliance for all shipments.
🏆 Certifications
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ISO 9001 certified production
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Material test reports (MTR) available upon request
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RoHS and REACH compliant
📞 Contact Us
📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com
📩 Contact us now for pricing, samples, and expert technical support — we respond within 24 hours.
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