Aluminium, ASTM & FED-QQ
QQ-A-200/3 T3511 (2024) Bar & Extrusion
High strength aerospace aluminium alloy.
A high strength alloy with, dependent upon temper, minimum proof stress up to 56 ksi/385 MPa and minimum tensile strength up to 70 ksi/482 MPa.
It is excellent on parts where good strength-to-weight ratio is needed and for use in high strength applications where no welding is required.
ดาวน์โหลด PDF
ช่วง
PLEASE NOTE
If you do not see what you are looking for, please contact your local service centre with your specific requirements.
QQ-A-200/3 T3511 Aluminium Related Specifications
| System / Standard | Country / Region | Grade / Designation |
| AA | USA | 2024-T3511 |
| UNS | International | A92024 (2024-T3511) |
| EN / DIN | Europe | EN AW-2024-T3511 / 3.1355 |
| EN Name | Europe | AlCu4Mg1-T3511 |
| ASTM B221 | USA | 2024-T3511 extruded bar, rod, shapes & tube |
| GB | China | 2A12-T3511 (commonly used equivalent to 2024-T3511) |
| JIS | Japan | A2024-T3511 |
| BS (Aerospace) | UK | 2024A-T3511 extruded products (L-series aerospace) |
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 | 2.74 g/cm³ |
| Melting Point | 640 °C |
| Thermal Expansion | 23.1 x 10-6/K |
| Modulus of Elasticity | 73 GPa |
| Thermal Conductivity | 121 W/m.K |
| Electrical Resistivity | 30 % IACS |
การประยุกต์ใช้
- Commonly used in:
- 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 apply to QQ-A-200/3 bar in the T3 temper.
| Diameter (mm) | Proof Strength (Min) | Tensile Strength (Min) | Elongation % (Min) |
| Up to & incl. 6.25mm | 290 | 393 | 12 |
| Over 6.3mm up to & incl. 19mm | 303 | 414 | 12 |
| Over 19mm up to & incl. 38mm | 317 | 448 | 10 |
| Over 38mm | 358 | 483 | 10 |
