Introduction to 7075 aluminum rod
7075 aluminum is known as ultra-high strength aluminum alloy, the yield strength of the alloy is close to the tensile strength, the yield ratio is high, the specific strength is also very high, but the plasticity and high temperature strength are low, should be used at room temperature, 120℃ below the bearing structure, the alloy is easy to process, has good corrosion resistance and high toughness. The alloy is widely used in the aerospace industry and has become one of the most important structural materials in this field.
7075 Chemical composition
Silicon Si: ≤0.40
Iron Fe: ≤0.50
Copper: 1.2-2.0
Manganese Mn: ≤0.30
Magnesium Mg: 2.1-2.9
Chromium Cr: 0.18-0.28
Zn: 5.1-6.1
Titanium Ti: ≤0.20
Al: allowance
Physical properties of 7075-T6 aluminum rod
Tensile strength :540Mpa
0.2% yield strength 480Mpa
Elongation rate :7%
Elastic modulus :E/Gpa:71.
7075 Material characteristics
1. High strength heat treatable alloy.
2. Good mechanical properties.
3. Good usability.
4. Easy to process, good wear resistance.
5. Good corrosion resistance and oxidation resistance.
7075 Mechanical properties
| Condition | Label | A heat treatment or state | strength of extension | yield | Elongation or elongation after breakage | hardness |
| σb | σs | δ | HBW | |||
| Mpa | Mpa | % | ||||
| bar;d≤200 | 7075O | O | ≥275 | ≥165 | ≥10 | 60 |
| bar;d≤25 | 7075T1、T6、T6510、T6511 | T62、T6、T6510、T6511 | ≥540 | ≥480 | ≥7 | 150 |
| bar;25<d≤100 | 7075T1、T6、T6510、T6511 | T62、T6、T6510、T6511 | ≥560 | ≥500 | ≥7 | 150 |
| bar;100<d≤150 | 7075T1、T6、T6510、T6511 | T62、T6、T6510、T6511 | ≥550 | ≥440 | ≥5 | 150 |
| bar;150<d≤200 | 7075T1、T6、T6510、T6511 | T62、T6、T6510、T6511 | ≥440 | ≥400 | ≥5 | 150 |
| bar;d≤25 | 7075T73、T73510、T73511 | T73、T73510、T73511 | ≥485 | ≥420 | ≥7 | 135 |
| bar;25<d≤75 | 7075T73、T73510、T73511 | T73、T73510、T73511 | ≥475 | ≥390 | ≥6 | 135 |
| bar;75<d≤100 | 7075T73、T73510、T73511 | T73、T73510、T73511 | ≥470 | ≥390 | ≥6 | 135 |
| bar;100<d≤150 | 7075T73、T73510、T73511 | T73、T73510、T73511 | ≥440 | ≥360 | ≥6 | 135 |
① O-annealing state;
② H-work hardening state;
T6- solution heat treatment + artificial aging;
④ T1-high temperature molding + natural aging;
⑤ T3-solution heat treatment after cold processing, and then natural aging to the basic stable state;
⑥T4- after solution heat treatment, the natural aging to a basic stable state;
⑦T5- from high temperature molding cooling, and then artificial aging to the basic stable state;
(8) the state of over-aging after T7-solution heat treatment;
⑨T8- solution heat treatment after cold processing, and then the state of manual aging d- diameter of round rod or thickness of square rod or hexagonal rod, t- thickness of square rod or hexagonal rod, unit mm Note: the supply state of this grade of rod O, T1, T6, T6510, T6511, T73, T73510, T73511; The heat treatment or state O, T62, T6, T6510, T6511, T73, T73510 and T73511 in the table are the sample states
