7075 Aluminum Round Bar
The 7075 aluminum round bar is an aerospace-grade alloy renowned for its excellent mechanical properties and versatility in demanding applications.
Haomei Aluminum offers direct sales of high-strength 7075 aluminum bars, specially designed for aerospace structural components, molds, and high-stress equipment. The products undergo ultrasonic testing to ensure no internal defects. Customization is available for round bars, square bars, and hexagonal bars (Φ3mm-250mm). Precision machining and surface treatment services are provided. In-stock supply with quality compliant with national standards, suitable for use in harsh environments below 120°C. Our clients cover the aerospace and automotive manufacturing industries.
7075 Aluminum Round Bar Specifications
| Specification | Details |
| Diameter Range | 0.5–12 inches (Cold Worked or Extruded), typically 1 to 3 inches in diameter. |
| Length | Up to 144 inches. |
| Certification | Compliant with ASTM, AMS, and Aerospace Quality Assurance Standards. |
| Surface Treatment | Polished, Anodized, or Powder Coated (based on application requirements). |
| Temper | T6/T651: Highest strength, but lower corrosion resistance. |
| T73/T7351: Improved stress corrosion resistance with slightly reduced strength. | |
| Common Standards | ASTM B211, AMS 4122–4124, AMS-QQ-A-225/9. |
7075 Aluminum Round Bar Chemical Composition
| Alloy 7075 min | Alloy 7075 max | |
| Al | Rem | Rem |
| Si | - | 0.4 |
| Fe | - | 0.5 |
| Cu | 1.2 | 2 |
| Mn | - | 0.3 |
| Mg | 2.1 | 2.9 |
| Cr | 0.18 | 0.28 |
| Zn | 5.1 | 6.1 |
| Ti | - | 0.2 |
| Other Each | - | 0.05 |
| Others Total | - | 0.15 |
7075 Aluminum Round Bar Mechanical Properties
| Material | Temper | Size (") | Tensile Strength (ksi) | Yield Strength (ksi) | Elongation in 2" % |
| Alloy 7075 Bar | T651 | - | 77 | 66 | 7 |
| Alloy 7075 Bar | T7351 | <4" | 68 | 56 | 10 |
| Alloy 7075 Bar | T73511 | <0.25 | 68 | 58 | 7 |
| Alloy 7075 Bar | T73511 | 0.25 - 1.5 | 70 | 61 | 8 |
| Alloy 7075 Bar | T73511 | 1.5-3.0 | 69 | 59 | 8 |
| Alloy 7075 Bar | T6511 | <0.25 | 78 | 70 | 7 |
| Alloy 7075 Bar | T6511 | 0.25-0.5 | 81 | 73 | 7 |
| Alloy 7075 Bar | T6511 | 0.5-3.0 | 81 | 72 | 7 |
7075 Aluminum Round Bar Physical Characteristics
- Density: Approximately 2.81 g/cm³
- High strength while maintaining a low weight
- Good thermal conductivity and dimensional stability
Haomei 7075 Aluminum Round Bar Inventory List
| Description | Diameter | Temper | Production Method |
| 1/4" Aluminum Round Bar 7075-T6-Cold Finish | 1/4" | T6 | Cold Finish |
| 5/16" Aluminum Round Bar 7075-T6 | 5/16" | T6 | Cold Finish |
| 3/8" Aluminum Round Bar 7075-T6-Cold Finish | 3/8" | T6 | Cold Finish |
| 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 1/2" | T651 | Cold Finish |
| 9/16" Aluminum Round Bar 7075-T651-Cold Finish | 9/16" | T651 | Cold Finish |
| 5/8" Aluminum Round Bar 7075-T651-Cold Finish | 5/8" | T651 | Cold Finish |
| 3/4" Aluminum Round Bar 7075-T7351-Cold Finish | 3/4" | T7351 | Cold Finish |
| 3/4" Aluminum Round Bar 7075-T651-Cold Finish | 3/4" | T651 | Cold Finish |
| 7/8" Aluminum Round Bar 7075-T7351 | 7/8" | T7351 | Cold Finish |
| 7/8" Aluminum Round Bar 7075-T651-Cold Finish | 7/8" | T651 | Cold Finish |
| 1" Aluminum Round Bar 7075-T7351 | 1" | T7351 | Cold Finish |
| 1" Aluminum Round Bar 7075-T651-Cold Finish | 1" | T651 | Cold Finish |
| 1 1/8" Aluminum Round Bar 7075-T651-Cold Finish | 1 1/8" | T651 | Cold Finish |
| 1 1/4" Aluminum Round Bar 7075-T651-Cold Finish | 1 1/4" | T651 | Cold Finish |
| 1 1/4" Aluminum Round Bar 7075-T7351-Cold Finish | 1 1/4" | T7351 | Cold Finish |
| 1 3/8" Aluminum Round Bar 7075-T7351 | 1 3/8" | T7351 | Cold Finish |
| 1 3/8" Aluminum Round Bar 7075-T651-Cold Finish | 1 3/8" | T651 | Cold Finish |
| 1 1/2" Aluminum Round Bar 7075-T7351-Cold Finish | 1 1/2" | T7351 | Cold Finish |
| 1 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 1 1/2" | T651 | Cold Finish |
| 1 5/8" Aluminum Round Bar 7075-T7351-Cold Finish | 1 5/8" | T7351 | Cold Finish |
| 1 5/8" Aluminum Round Bar 7075-T651-Cold Finish | 1 5/8" | T651 | Cold Finish |
| 1 3/4" Aluminum Round Bar 7075-T7351 | 1 3/4" | T7351 | Cold Finish |
| 1 3/4" Aluminum Round Bar 7075-T651-Cold Finish | 1 3/4" | T651 | Cold Finish |
| 1 7/8" Aluminum Round Bar 7075-T651-Cold Finish | 1 7/8" | T651 | Cold Finish |
| 2" Aluminum Round Bar 7075-T7351-Cold Finish | 2" | T7351 | Cold Finish |
| 2" Aluminum Round Bar 7075-T651-Cold Finish | 2" | T651 | Cold Finish |
| 2 1/8" Aluminum Round Bar 7075-T651-Cold Finish | 2 1/8" | T651 | Cold Finish |
| 2 1/4" Aluminum Round Bar 7075-T651-Cold Finish | 2 1/4" | T651 | Cold Finish |
| 2 1/4" Aluminum Round Bar 7075-T7351-Cold Finish | 2 1/4" | T7351 | Cold Finish |
| 2 3/8" Aluminum Round Bar 7075-T7351-Cold Finish | 2 3/8" | T7351 | Cold Finish |
| 2 1/2" Aluminum Round Bar 7075-T7351-Cold Finish | 2 1/2" | T7351 | Cold Finish |
| 2 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 2 1/2" | T651 | Cold Finish |
| 2 5/8" Aluminum Round Bar 7075-T651-Cold Finish | 2 5/8" | T651 | Cold Finish |
| 2 3/4" Aluminum Round Bar 7075-T651-Cold Finish | 2 3/4" | T651 | Cold Finish |
| 2 3/4" Aluminum Round Bar 7075-T7351-Cold Finis | 2 3/4" | T7351 | Cold Finish |
| 3" Aluminum Round Bar 7075-T7351-Cold Finish | 3" | T7351 | Cold Finish |
| 3" Aluminum Round Bar 7075-T651-Cold Finish | 3" | T651 | Cold Finish |
| 3 1/4" Aluminum Round Bar 7075-T651-Cold Finish | 3 1/4" | T651 | Cold Finish |
| 3 1/4" Aluminum Round Bar 7075-T7351-Cold Finish | 3 1/4" | T7351 | Cold Finish |
| 3 1/2" Aluminum Round Bar 7075-T7351-Cold Finish | 3 1/2" | T7351 | Cold Finish |
| 3 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 3 1/2" | T651 | Cold Finish |
| 3 3/4" Aluminum Round Bar 7075-T7351-Cold Finish | 3 3/4" | T7351 | Cold Finish |
| 3 3/4" Aluminum Round Bar 7075-T651-Cold Finish | 3 3/4" | T651 | Cold Finish |
| 4" Aluminum Round Bar 7075-T7351-Cold Finish | 4" | T7351 | Cold Finish |
| 4" Aluminum Round Bar 7075-T651-Cold Finish | 4" | T651 | Cold Finish |
| 4 1/4" Aluminum Round Bar 7075-T651-Cold Finish | 4 1/4" | T651 | Cold Finish |
| 4 1/2" Aluminum Round Bar 7075-T7351-Cold Finish | 4 1/2" | T7351 | Cold Finish |
| 4 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 4 1/2" | T651 | Cold Finish |
| 4 3/4" Aluminum Round Bar 7075-T651-Cold Finish | 4 3/4" | T651 | Cold Finish |
| 5" Aluminum Round Bar 7075-T651-Cold Finish | 5" | T651 | Cold Finish |
| 5" Aluminum Round Bar 7075-T7351-Cold Finish | 5" | T7351 | Cold Finish |
| 5 1/2" Aluminum Round Bar 7075-T651-Cold Finish | 5 1/2" | T651 | Cold Finish |
| 5 1/2" Aluminum Round Bar 7075-T7351-Cold Finish | 5 1/2" | T7351 | Cold Finish |
| 6" Aluminum Round Bar 7075-T7351-Cold Finish | 6" | T7351 | Cold Finish |
| 6" Aluminum Round Bar 7075-T651-Cold Finish | 6" | T651 | Cold Finish |
| 7" Aluminum Round Bar 7075-T651-Cold finish | 7" | T651 | Cold Finish |
| 7 1/2" Aluminum Round Bar 7075-T651-Cold finish | 7 1/2" | T651 | Cold Finish |
| 8" Aluminum Round Bar 7075-T651 Cold Finish | 8" | T651 | Cold Finish |
7075 Aluminum Round Bar Processing and Machinability
- Formability: In the annealed state (7075-O), it is relatively easy to form. However, forming in this state often results in increased springback.
- Heat Treatment: Post-forming heat treatment (such as T6 or T651) can significantly enhance strength.
- Machinability: Although 7075 aluminum is a high-strength alloy, it performs well with carbide tools, making it a popular choice in precision CNC machining.
- Weldability: Welding is generally not recommended, as conventional methods can reduce its corrosion resistance and mechanical properties.
7075 Aluminum Round Bar Applications
| Application Field | Specific Application | Description |
| Aerospace | Aircraft Components | 7075 aluminum round bars are widely used in the aerospace industry for manufacturing aircraft components such as wing structural parts, fuselage skin reinforcements, and internal frames. Its high strength and excellent fatigue resistance ensure aircraft stability and reliability in complex flight environments. Additionally, the lightweight characteristic of 7075 aluminum reduces the overall aircraft weight, enhancing fuel efficiency and flight performance. |
| Landing Gear Components | In landing gear components, the corrosion resistance and tensile strength of 7075 aluminum round bars are crucial. During landing, the landing gear experiences significant impact forces and instantaneous loads. 7075 aluminum provides exceptional structural strength and crack resistance, ensuring reliable performance even after long-term use. | |
| Automotive | Suspension Components | In automotive manufacturing, 7075 aluminum round bars are extensively used for suspension components. Since suspension systems endure continuous vibrations and impacts in various road conditions, the high strength and fatigue resistance of 7075 aluminum ensure durability while reducing the vehicle's overall weight, improving handling performance. |
| Engine Blocks | Engine blocks are often made from 7075 aluminum round bars. Its excellent thermal conductivity helps engines dissipate heat quickly, preventing overheating. Meanwhile, the high-strength material withstands the high-pressure environment inside the engine, ensuring long-term operational stability. | |
| Brake Systems | In brake systems, 7075 aluminum round bars are mainly used to manufacture brake calipers and brackets. Its corrosion resistance and outstanding mechanical properties ensure the brake system's stability and safety under high temperatures and pressures. | |
| Defense | Armored Vehicles | In the production of armored vehicles, 7075 aluminum round bars are used for structural components and protective panels. With exceptional impact resistance and corrosion resistance, armored vehicles equipped with 7075 aluminum have enhanced protective capabilities in battlefield environments while maintaining a lighter overall weight. |
| Industrial | Precision Tool Shafts | 7075 aluminum round bars are used in industrial fields to manufacture precision tool shafts. Since precision tools need to maintain stability during high-speed operations, the high hardness and fatigue resistance of 7075 aluminum ensure long-term stability and accuracy. |
| Gears | Industrial gears operate under high loads and rotational speeds. The excellent mechanical properties of 7075 aluminum round bars provide high wear resistance and fracture resistance, ensuring reliable performance in complex environments. | |
| Molds | 7075 aluminum round bars are widely used in mold manufacturing. Their excellent machinability and wear resistance make them an ideal material for producing high-strength molds. In particular, 7075 aluminum round bars demonstrate outstanding durability in injection molds and stamping molds. | |
| Recreation | Bicycle Frames | In sports equipment, 7075 aluminum round bars are often used to manufacture bicycle frames. Frames need to be rigid enough to support the rider's weight while remaining lightweight to improve riding efficiency. The high strength and corrosion resistance of 7075 aluminum ensure long-term durability in complex environments. |
| Climbing Gear | Climbing gear such as carabiners, protection devices, and anchors are typically made from 7075 aluminum round bars. Their high strength and lightweight characteristics provide excellent load-bearing capacity, while their corrosion resistance ensures reliability in humid or extreme environments. | |
| Marine Equipment | In marine and offshore applications, 7075 aluminum round bars are used to manufacture masts, handrails, deck fittings, and other components. Given the severe salt spray corrosion in marine environments, the corrosion resistance and structural strength of 7075 aluminum make it an ideal choice for marine equipment, ensuring safety and durability during long-term use. |
Notes
- Corrosion Resistance: 7075 aluminum alloy has weak stress corrosion resistance, requiring additional protection through cladding or surface treatments (such as anodizing).
- Processing Recommendations: Avoid high-temperature annealing, and prioritize using cold working or T651 temper material to minimize deformation.
- Material Selection Criteria: Choose based on strength, corrosion resistance, and cost. For non-extreme scenarios, consider alternative materials like 6061.
- Welding: Due to reduced corrosion resistance, arc welding is not recommended. Resistance welding is feasible but requires post-weld treatment.
- Heat Treatment: Perform solution heat treatment at 700–900°F, followed by aging treatment to enhance strength.
Comparative Advantages
- Strength: Significantly exceeds soft steel and common aluminum alloys like 6061.
- Lightweight: With a density only one-third that of steel, it is ideal for weight reduction applications.
- Cost-Effectiveness: Although the unit price is higher, its long service life makes it suitable for high-value applications.
Superior to Alternatives
- Strength-to-Weight Ratio: Comparable to some steels while being 60% lighter.
- Fatigue Resistance: Maintains performance under repeated stress.
- Versatility: Suitable for forming, extrusion, and forging applications.
7075 aluminum round bar combines high strength and low weight, making it an excellent choice for applications where performance and durability are critical.
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