Aluminium, ASTM & FED-QQ
QQ-A-225/9 T651 Bar
Aerospace aluminium alloy with a superior strength to weight ration than that of steel.
A high strength aerospace aluminium alloy offering good corrosion resistance and machinability.
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PLEASE NOTE
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QQ-A-225/9 T651 Aluminium Related Specifications
| System / Standard | Country / Region | Grade / Designation |
| AA | USA | 7075-T651 |
| UNS | International | A97075 (7075-T651) |
| EN / DIN | Europe | EN AW-7075-T651 / 3.4365 |
| EN Name | Europe | AlZn5.5MgCu-T651 |
| ASTM B211 | USA | 7075-T651 bar, rod & wire |
| GB | China | 7A09-T651 (commonly used equivalent) |
| JIS | Japan | A7075-T651 |
| BS (Aerospace) | UK | 7075-T651 (L95-T651 high-strength products) |
Properties
Chemical Composition
Alloy QQ A 225/9
SAE AMS QQ-A-225/9
| Chemical Element | % Present |
| Silicon (Si) | 0.00 - 0.40 |
| Iron (Fe) | 0.00 - 0.50 |
| Copper (Cu) | 1.20 - 2.00 |
| Manganese (Mn) | 0.00 - 0.30 |
| Chromium (Cr) | 0.18 - 0.28 |
| Magnesium (Mg) | 2.10 - 2.90 |
| Zinc (Zn) | 5.10 - 6.10 |
| Titanium (Ti) | 0.00 - 0.20 |
| Other (Each) | 0.00 - 0.05 |
| Others (Total) | 0.00 - 0.15 |
| Aluminium (Al) | Balance |
Mechanical Properties
Bar 12.7mm to 101.6mm
SAE AMS QQ-A-225/9
| Mechanical Property | Value |
| Proof Stress | 455 Min MPa |
| Tensile Strength | 531 Min MPa |
| Elongation A50 mm | 7 Min % |
General Physical Properties
| Physical Property | Value |
| Density | 2.81 g/cm³ |
| Melting Point | 635 °C |
| Thermal Expansion | 23.5 x 10-6/K |
| Modulus of Elasticity | 72 GPa |
| Thermal Conductivity | 134-160 W/m.K |
| Electrical Resistivity | 40 % IACS |
Applications
- High technology applications
- Defence components
- Aerospace components
Characteristics
- High strength
- Very good machinability
- Very good weldability (resistance, spoy & beam)
- Fair resistance to atmospheric corrosion
