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Related Specifications
Aluminium alloy QQ-A-200/3 has similarities to the following standard designations and specifications but may not be a direct equivalent:
- AMS 4164
- AMS 4165
Temper Types
Alloy QQ-A-200/3 is supplied in a wide range of tempers:
- T3
- T3510
- T81
- T8510
- T42
- T3511
- T8511
- O
Properties
Chemical Composition
Alloy QQ-A-200/3
SAE AMS QQ-A-200/3
| Chemical Element | % Present |
|---|---|
Silicon (Si) | 0.00 - 0.50 |
Iron (Fe) | 0.00 - 0.50 |
Copper (Cu) | 3.80 - 4.90 |
Manganese (Mn) | 0.30 - 0.90 |
Chromium (Cr) | 0.00 - 0.10 |
Magnesium (Mg) | 1.20 - 1.80 |
Zinc (Zn) | 0.00 - 0.25 |
Titanium (Ti) | 0.00 - 0.15 |
Other (Each) | 0.00 - 0.05 |
Others (Total) | 0.00 - 0.15 |
Aluminium (Al) | Balance |
General Physical Properties
| Physical Property | Value |
|---|---|
Density | 2.79 g/cm³ |
Melting Point | 640 °C |
Thermal Expansion | 23.1 x10-6/K |
Modulus of Elasticity | 73 GPa |
Thermal Conductivity | 121-150 W/m.K |
Electrical Resistivity | 30-40 % IACS |
Applications
- Aircraft structural components
- Truck wheels
- Medical instruments
- Screw machine products
Characteristics
- High strength
- Very good machinability
- Very good weldability
- Improved stress corrosion cracking resistance
- Excellent fatigue resistance
Additional Information
Mechanical Properties
These mechanical properties are for QQ-A-200/3 Bar in the T3511 temper.
| Diameter (mm) | Proof Strength (Min) | Tensile Strength (Min) | Elongation % (Min) |
|---|---|---|---|
| Up to & incl. 6.3 | 290 | 392 | 12 |
| Over 6.3 up to & incl. 19 | 303 | 413 | 12 |
| Over 19 up to & incl. 38.1 | 317 | 448 | 10 |
| Over 38.1 | 358 | 482 | 10 |
