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Strength in numbers
Aluminium Alloy | ASTM & FED-QQ
QQ-A-200/8 T6511 Bar
AerospaceQQ-A-200/8 T6511
Commercial6061
A medium strength aerospace aluminium alloy with, depending upon temper, Yield Strength of 12-35 ksi (80 - 240 MPa) and Tensile Strength of 26-38 ksi (180 - 260 MPa).
This alloy is used where good strength combined with workability is required.
Chemical Composition
|
SAE AMS QQ-A-200/8 Alloy QQ A 200/8 |
|
|---|---|
| Chemical Element | % Present |
| Aluminium (Al) | balance |
| Other (Each) | 0.05 max |
| Manganese (Mn) | 0.15 max |
| Titanium (Ti) | 0.15 max |
| Others (Total) | 0.15 max |
| Zinc (Zn) | 0.25 max |
| Chromium (Cr) | 0.04 - 0.35 |
| Copper (Cu) | 0.15 - 0.4 |
| Iron (Fe) | 0.7 max |
| Silicon (Si) | 0.4 - 0.8 |
| Magnesium (Mg) | 0.8 - 1.2 |
Alloy Designations
Aluminium alloy QQ-A-200/8 has similarities to the following standard designations and specifications but may not be a direct equivalent:
AMS 4150, AMS 4173
Temper Types
Alloy QQ-A-200/8 is supplied in a wide range of tempers:
- O
- T4
- T42
- T4510
- T4511
- T6
- T62
- T6510
- T6511
Supplied Forms
Alloy QQ-A-200/8 is supplied in sheet, bar, rod, wire, tube and extruded sections:
- Bar
- Extrusions
- Sheet
- Tube
Generic Physical Properties
| Physical Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 650 °C |
| Thermal Expansion | 23.4 x10^-6 /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 166 W/m.K |
| Electrical Resistivity | 0.040 x10^-6 Ω .m |
Mechanical Properties
These Mechanical Properties are for Bar in the T6511 temper
| Diameter (mm) | Proof Strength (Min) | tensile Strength (Min) | Elongation % (Min) |
| Up to & incl. 6.3 | 241 | 262 | 8 |
| Over 6.3 | 241 | 262 | 10 |
