The 7A09 aluminum bar belongs to the Al-Zn-Mg-Cu series of ultra-high-strength deformed aluminum alloys, widely used in the aerospace industry. Its plasticity in the annealed and artificially aged states is slightly lower than that of the same states of 2A12 but slightly better than that of 7A04. The static fatigue and notch sensitivity of the plate are present, and its stress corrosion performance is superior to that of 7A04.
Mastar, leveraging its robust stock system, offers 7A09 aluminum bars in various sizes. The same size can be cut to specifications and customized with surface treatments to meet diverse customer needs.
7A09 aluminum bar stock size
Below are the popular sizes of 7A09 aluminum bars available in Mastar's inventory. If your required size is not listed, please contact us, and we will leverage our extensive inventory to provide a solution for you.
| Product | Temper | Diameter(mm) | Diameter(inch) | Length(mm) | Length(inch) |
| 7A09 aluminum bar | T6 | 10mm | 0.39" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 12mm | 0.47" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 15mm | 0.59" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 18mm | 0.71" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 20mm | 0.79" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 25mm | 0.98" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 35mm | 1.38" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 45mm | 1.77" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 50mm | 1.97" | 3800mm | 149.61" |
| 7A09 aluminum bar | T6 | 55mm | 2.17" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 60mm | 2.36" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 65mm | 2.56" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 70mm | 2.76" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 75mm | 2.95" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 80mm | 3.15" | 3400mm | 133.86" |
| 7A09 aluminum bar | T6 | 85mm | 3.35" | 3900mm | 153.54" |
| 7A09 aluminum bar | T6 | 90mm | 3.54" | 3300mm | 129.92" |
| 7A09 aluminum bar | T6 | 90mm | 3.54" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 95mm | 3.74" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 100mm | 3.94" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 110mm | 4.33" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 115mm | 4.53" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 120mm | 4.72" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 130mm | 5.12" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 130mm | 5.12" | 3500mm | 137.8" |
| 7A09 aluminum bar | T6 | 130mm | 5.12" | 4200mm | 165.35" |
| 7A09 aluminum bar | T6 | 140mm | 5.51" | 3400mm | 133.86" |
| 7A09 aluminum bar | T6 | 150mm | 5.91" | 3400mm | 133.86" |
| 7A09 aluminum bar | T6 | 150mm | 5.91" | 4000mm | 157.48" |
| 7A09 aluminum bar | T6 | 150mm | 5.91" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 160mm | 6.3" | 5800mm | 228.35" |
| 7A09 aluminum bar | T6 | 160mm | 6.3" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 170mm | 6.69" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 180mm | 7.09" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 190mm | 7.48" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 200mm | 7.87" | 3800mm | 149.61" |
| 7A09 aluminum bar | T6 | 200mm | 7.87" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 210mm | 8.27" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 220mm | 8.66" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 230mm | 9.06" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 240mm | 9.45" | 2700mm | 106.3" |
| 7A09 aluminum bar | T6 | 240mm | 9.45" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 250mm | 9.84" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 260mm | 10.24" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 270mm | 10.63" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 280mm | 11.02" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 300mm | 11.81" | 1900mm | 74.8" |
| 7A09 aluminum bar | T6 | 310mm | 12.2" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 320mm | 12.6" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 330mm | 12.99" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 340mm | 13.39" | 6000mm | 236.22" |
| 7A09 aluminum bar | T6 | 350mm | 13.78" | 6000mm | 236.22" |
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Click to collapseCharacteristics of 7A09 aluminum bar rod
- Good plasticity after solid solution treatment, and significant strengthening effect of heat treatment
- High strength below 150℃, especially good low temperature strength
- Poor welding performance
- There is a tendency for stress corrosion cracking and aluminum cladding or other protective treatments are required.
- Double-stage aging can improve resistance to stress corrosion cracking
- The plasticity in the annealed and freshly quenched states is slightly lower than that of 2A12 and better than that of 7A04
- The static fatigue performance, notch sensitivity and stress corrosion performance of the plate are better than 7A04
Application of 7A09 aluminum bar
- Used in the manufacturing of fighter jets, medium-range bombers, transport aircraft, and trainer aircraft.
- Manufactures key components such as front landing gear parts, wing spars, main beams, fuselage coupling frame supports and pillars, bulkheads, ribs, and main beam joints.
- Used for the upper and lower wall panels of the tail, hydraulic system components, and hydraulic tank piston rods and inner and outer cylinders.
- Used to manufacture aircraft structural parts and high-stress components, such as upper and lower wing panels and stringers.
- Applied in mold processing, machinery, tooling fixtures, and the aerospace industry.
- Used for blow molds, ultrasonic welding molds, golf club heads, shoe molds, paper-plastic molds, foam forming molds, and wax removal molds.
- Used to manufacture high-end aluminum alloy bicycle frames.
- First used as the material for the smartphone OPPO N3 in 2014
Chemical composition of 7A09 aluminum bar
| Elements | Composition(%) |
| Si | 0 – 0.50 |
| Cu | 1.2 – 2.0 |
| Mg | 2.0 – 3.0 |
| Zn | 5.1 – 6.1 |
| Mn | 0 – 0.15 |
| Ti | 0 – 0.10 |
| Cr | 0.16 - 0.30 |
| Fe | 0 – 0.5 |
| Al | Remainder |
| Other(each) | ≤ 0.05 |
| Other(total) | ≤ 0.10 |
Mechanical properties of 7A09 aluminum bar
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| T6 | 530MPa | 400MPa | 6% |
Other information of 7A09 aluminum alloy
Formability
7A09 aluminum bar has good formability in annealing and solution treatment state, but its formability decreases after artificial aging. The fracture toughness is satisfactory in T6 state, the stress corrosion cracking resistance is excellent in T73 over-aging state, T76 has high exfoliation corrosion resistance, and T74 has both high strength and stress corrosion cracking resistance.
Tensile strength
The tensile strength of 7A09 aluminum rod is higher than that of 2A12 and 2A14 aluminum alloys, and it has higher resistance to stress corrosion cracking. It is suitable for manufacturing aircraft parts and has higher weight reduction effect and safety, but its fatigue strength has not been improved simultaneously.
Temperature effect
The strength of 7A09 aluminum rod decreases rapidly when the temperature rises, and the working temperature should not exceed 125℃.
Annealing and solution treatment
Incomplete annealing specification: 290℃~320℃, 2h~4h, air cooling
Complete annealing specification: 390℃~430℃, cooling rate ≤30℃/h, air cooling after dropping to ≤200℃
Solution treatment temperature: 460℃~475℃, the temperature of aluminum-clad sheet should be close to the lower limit, and the number of treatments should not exceed 2 times
Melting and casting
Melting temperature: 710℃~750℃
Casting temperature: 710℃~735℃
Melting temperature: 477℃~638℃
T73/T6 state comparison
The fracture toughness in T73 state is higher than that in T6, the crack growth rate is lower, the fatigue strength is better than that in T6, and the thermal conductivity and electrical conductivity are higher.
Anti-corrosion measures
Anodizing, chemical anti-corrosion treatment and paint coating are used for corrosion protection.
Metallurgical structure
The structure of 7A09 aluminum alloy includes α-Al solid solution and second phase particles. The three types of particles have an impact on the material properties, especially the strengthening effect of aging on the material.
Forging and cutting performance
The forging temperature is 320℃~440℃, and the start forging temperature should be ≤400℃. Too high temperature may cause hot brittleness. After quenching and aging, the 7A09 aluminum alloy has good machinability.
Why choose Mastar?
- Customized service: Provide a variety of specifications and surface treatments to meet customers' personalized needs.
- Complete certification: All products are certified by ISO, CE and other international standards to ensure reliable product quality.
- Fast delivery: Sufficient inventory, short delivery time, to meet urgent order needs.
- Quick response: Respond to customer demands and quotations quickly, and give customers the most competitive prices
- Price update: According to the international aluminum price, update the price for customers in real time to let customers know the latest price.
- Free samples: All samples can be provided free of charge, and customers can place orders after passing the test.
Mastar 7A09 aluminum bar purchasing guide
Before purchasing 7A09 aluminum bars from Mastar, please confirm the sizes and quantities you need. Then, contact our customer service team, and we will provide you with the highest quality products at the most competitive market prices..
7A09 aluminum bar price
7A09 aluminum bar price: (LME ingot price + processing fee) × weight + packaging fee + shipping fee.
Please contact Mastar for pricing and the processing fee per ton for various specifications of aluminum bars. The processing fees for different sizes of 7A09 aluminum bars may vary significantly, and we will provide you with the best quotation.
7A09-T6 aluminum bar is the most commonly ordered condition.
7A09 aluminum bar appearance quality
- The surface of 7A09 round bars, square bars, and hex bars must be free from cracks, bubbles, and corrosion spots.
- The thickness of 7A09 round bars, square bars, and hex bars must not exceed the allowable deviation range.
- The surface of 7A09 round bars, square bars, or hex bars must not have deep scratches, wear, dents, or straightening marks that exceed the deviation range.