7022 Aluminium Bar
7022 aluminium bar is a high-strength alloy specifically designed to resist stress corrosion cracking, exhibiting corrosion resistance and oxidation resistance comparable to 7075 aluminum alloy. After solution treatment and aging strengthening, this alloy possesses high tensile strength and yield strength while maintaining good plasticity and corrosion resistance. It can be formed through various processes such as extrusion, forging, machining, and welding, and is widely used in aerospace structural components, transportation vehicle frames, molds, and high-strength mechanical parts.
Advantages
- Extremely High Strength: 7022 aluminum alloy has exceptionally high strength after heat treatment, making it suitable for high-load applications.
- Excellent Fatigue Strength: Its outstanding fatigue strength ensures stability in repeatedly stressed environments.
- Good Machinability: 7022 aluminium alloy is easy to machine, suitable for precision processing.
- Good Thermal Stability: The low expansion coefficient of copper enhances its dimensional stability at high temperatures.
- Good Heat Dissipation: The addition of copper improves its heat dissipation capabilities, making it suitable for applications requiring high thermal management.
- Good Corrosion Resistance: The presence of magnesium endows 7022 aluminum alloy with good corrosion resistance.
Our 7022 aluminium alloy bar rod conform to international standards such as ASTM B221, AMS 4113, EN 573 / EN 755. We can also provide Material Testing Certificates (MTC) and third-party inspection reports upon request to ensure quality assurance and traceability for your critical applications. We offer a variety of thicknesses and widths to meet diverse application needs, and provide standard and custom sizes to meet specific design requirements.
Specification
| Category | Details | Notes / Options |
| Alloy Designation | 7022 (AA7022, EN AW-7022, UNS A97022) | AlZn5Mg3Cu per ISO 209 / EN 573-3. |
| Common Forms | Round Bar, Square Bar, Hex Bar, Rectangular Bar, Forging Stock | Available in extruded, drawn, or forged conditions. |
| Temper | O, H112, T6, T651, T73, T7351, T7651 | T6: Peak strength. T651: Stress-relieved. T73/T7351: Improved SCC resistance. |
| Diameter / Size | Round Bar: Ø10mm – Ø300mm Square/Rectangular: 10×10mm – 200×200mm |
Custom sizes and shapes available upon request. |
| Length | 1,000mm – 6,000mm (Standard) | Cut to length or supplied in full-length bars. |
| Tolerances | Diameter: ±0.1mm – ±1.0mm Straightness: ≤1mm per 300mm |
Precision tolerances available for critical applications. |
| Surface Finish | Mill Finish, Anodized, Brushed, Polished, Powder Coated | Mill finish is standard; other finishes are value-added options. |
| Density | ~2.8 g/cm³ | Contributes to its high specific strength. |
| Chemical Composition (Typical) | Zn: 4.8–5.2% Mg: 2.6–3.7% Cu: 0.50–1.0% Mn: 0.10–0.40% Cr: 0.10–0.30% Fe: ≤0.50% Si: ≤0.50% Ti+Zr: ≤0.20% Al: Balance |
Complies with ASTM, EN, and ISO standards. |
| Mechanical Properties (T6 Condition) | Tensile Strength: 460–590 MPa Yield Strength: 380–520 MPa Elongation: 7–14% Hardness (HB): 130–160 |
Properties vary with temper and size. T7351 offers lower strength but better resistance to stress corrosion cracking. |
| Packaging | Bundled, strapped, and wrapped in protective film on wooden pallets. | Ensures protection during transit and storage. |
HSTF 7022 Aluminium Bar Hot Products
7022 Cold Drawn Aluminum Bar
Diameter: 3mm – 100mm
Length: 1 – 6 m (Customizable)
7022 cold drawn aluminum rods are produced through a cold drawing process, resulting in more precise dimensions, smoother surfaces, and improved mechanical properties.
7022 Extruded Aluminum Bar
Diameter: 10 – 500 mm
Length: 1 – 6 m (Customizable)
7022 extruded aluminum bars are produced through a hot extrusion process, which allows for the manufacture of aluminum bars of various sizes and profiles, including round bars, square bars, hexagonal bars, and flat bars, to meet different processing and structural requirements.
HSTF Other Hot-Selling Products
Application
7022 Aluminum Bar for Aerospace
7022 aluminum rods are used to manufacture aircraft structural parts and high-load fasteners. Typical applications include aircraft wing stringers, fuselage frames, skin reinforcements, and high-strength brackets and connecting arms for spacecraft. These components need to withstand repeated loads and harsh environments while maintaining high specific strength.
7022 Aluminum Rod Bar in Transportation
Used in the manufacture of high-strength structural components for automobiles, rail vehicles, and ships. Typical applications include automotive frame joints, chassis reinforcements, safety components, as well as high-speed train body structures and ship cabin support components, aiming to achieve weight reduction, improved fuel efficiency, and increased load-bearing capacity.
7022 Aluminium Bar for Molds and Machinery
7022 aluminum bars are widely used in the manufacture of high-strength molds and mechanical structural components due to their high hardness and dimensional stability. Typical applications include cores and templates for plastic and rubber molds, as well as CNC milling machine tables, fixtures, vacuum chucks, and various tooling platforms, suitable for applications requiring high loads and high precision.
Package
| Packing | 1,Generaally package:Anti-water paper+strapped with min three strapping strips. |
| 2,Standard exporting package:Anti-water paper and plastic+covered by iron shrrt+strapped with min three strapping strips. | |
| 3,Excellent package:Anti-water paper and plastic film+covered by iron sheet+strapped with min three strapping strip+fixed on the iron or wooden pallets by strapping strips. | |
| Shipping | 1,Shipping by containers |
| 2,Shipping by bulk ship | |
| Custom | Customization is available upon request |
7022 vs 7075
Chemical Composition Comparison
- 7022: Higher Zn and Mg content, designed for greater hardenability and strength potential.
- 7075: Higher Cu content, with added Cr to balance strength, toughness, and resistance to stress corrosion.
Comparison of Mechanical Properties (T6/T651 condition)
In the T6/T651 temper, both 7075 and 7022 possess top-tier strength, but with different focuses. 7075 has a higher absolute strength ceiling, while 7022 also exhibits excellent strength under specific conditions and demonstrates better resistance to stress corrosion.
- Strength: 7075 has a higher strength ceiling in the T6 temper, representing a classic “strength ceiling.” 7022 also has very high strength, sufficient for most high-load applications.
- Toughness/Ducability: 7075 has a wider elongation range, and under certain processing conditions, its ductility is superior to 7022.
- Corrosion Resistance: 7022 is designed with stress corrosion resistance in mind, making it particularly suitable for use in humid or saline environments. 7075 in the T6 temper is sensitive to stress corrosion and requires special heat treatment to improve its performance.
Comparison of Process Performance
| Process Stage | 7022 | 7075 |
| Forging / Extrusion | Good; high Mg content improves hot workability | Good; a classic forging alloy widely used in aerospace |
| Machining | Good; requires appropriate tools and parameters after heat treatment | Good; but due to high hardness, it causes more tool wear |
| Weldability | Relatively better; suitable for Friction Stir Welding (FSW) | Poor with traditional fusion welding; reliable joints require advanced solid-state welding (e.g., FSW) and post-weld heat treatment |
| Heat Treatment | Good hardenability, but still sensitive to cooling rate in large sections | Good hardenability, but highly sensitive to cooling rate; core properties of thick sections can be uneven |
- Welding: 7022 is relatively more adaptable to welding, especially suitable for friction stir welding. 7075, on the other hand, relies more on advanced solid-state welding techniques and post-weld heat treatment to ensure joint performance.
- Heat Treatment: Both are sensitive to cooling rates; large cross-section parts require strict process control to prevent uneven performance.
Typical Application Comparison
| Application Area | 7022 | 7075 |
| Core Positioning | High-strength molds; structural parts for marine/corrosive environments | Primary aerospace load-bearing structures; high-stress fasteners |
| Tooling & Molds | Widely used for injection molds, die-casting molds, etc. | Used for high-end molds, but requires more careful corrosion protection |
| Aerospace | General structural parts, fixtures, tooling | Classic applications: aircraft skins, frames, landing gear components |
| Automotive / Marine | High-strength fasteners, key chassis parts, offshore platform components | High-performance automotive parts, racing structures, high-stress connectors |
| Others | Semiconductor equipment parts, precision tooling | Precision instruments, robotics components, high-end sports equipment |
Why Choose Us?
Quality Assurance – All products comply with ASTM, ISO, ensuring high purity, uniformstructure, and stable performance.
Professional Supplier – High quality aluminium alloy bar rod supplier in China. We have an advanced factory to ensure quality and efficiency.
Competitive Price – The mature supply chain system ensure that our products are highly competitive in cost and price.
Superior Quality – Quality supervision on whole process of production from raw materials, manufacturing, packaging, warehousing till container loading.
On-Time Delivery – The mature logistics management system and company self owned freight forwarder ensure that our OTD rate reaches 100%.
