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2024
AMS QQ-A-225/6 / AlCu4Mg1 / 2024 / T8
| Chemical Properties | % Value |
| Silicon (Si) | 0,00 - 0,50 |
| Chromium (Cr) | 0,00 - 0,10 |
| Manganese (Mn) | 0,30 - 0,90 |
| Magnesium (Mg) | 1,20 - 1,80 |
| Copper (Cu) | 3,80 - 4,90 |
| Titanium (Ti) | 0,00 - 0,15 |
| Iron (Fe) | 0,00 - 0,50 |
| Zinc (Zn) | 0,00 - 0,25 |
| Aluminium (Al) | Balance |
| Physical Properties | Value |
| Density | 2.78 g/cm³ |
| Melting Point | 502 °C |
| Thermal Expansion | 23 µm/m.°C |
| Modulus of Elasticity | 73.1 GPa |
| Thermal Conductivity | 121 W/m.K |
| Electrical Resistivity | 30% IACS |
| Mechanical Properties | Value |
| Proof Strength | 380 MPa |
| Yield Strength | 455 MPa |
| Shear Strength | 260 MPa |
| Elongation A50 mm | 5% |
| Hardness | 128 HB |
| 2024 T8 Temperature – Ultimate Tensile Strength Graph |
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| 2024 T8 Thickness – Ultimate Tensile Strength Graph |
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| 2024 T8 Diameter – Ultimate Tensile Strength Graph |
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| 2024 T8 Diameter-Yield Tensile Strength |
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The 2024-T8 aluminum alloy belongs to the Al-Cu-Mg (aluminum-copper-magnesium) series and is a material developed for applications requiring high strength. The T8 temper includes solution heat treatment followed by cold working and subsequent artificial aging processes. Thanks to this combination of processes, the alloy provides particularly high tensile strength and yield strength. However, this high strength also brings a certain reduction in ductility and formability properties.
In terms of corrosion resistance, 2024-T8 does not perform as well as pure aluminum or 6xxx series alloys. For this reason, it is generally used with surface protection
methods (such as anodizing or coating). Its coating capability is quite good, and especially when used in alclad (clad) form, corrosion resistance can be significantly increased. However, its weldability is low, and there is a high risk of cracking during welding processes; therefore, riveting or mechanical fastening methods are generally preferred.
In terms of machinability, 2024-T8 exhibits quite good performance despite its hard temper condition. Clean cutting surfaces can be obtained in machining processes. However, bending and forming properties are limited due to the T8 temper; this alloy is generally processed close to its final shape. Its vibration and fatigue resistance is one of the most important reasons it is preferred in aerospace applications, providing reliable performance under dynamic loads.
In terms of application areas, 2024-T8 is widely used especially in the aerospace industry. Aircraft fuselages, wing structures, fasteners, and high load-bearing structural components are typical applications of this alloy. It is also preferred in the defense industry, automotive performance parts, and engineering applications requiring high strength. Its high strength-to-weight ratio makes this alloy ideal for critical structural applications.
When compared with other alloys, 2024-T8 offers much higher strength compared to the 6061-T6 alloy, but is weaker in terms of corrosion resistance and weldability. When compared to 7075-T6, although 7075 provides higher strength, 2024 offers better fatigue resistance and impact toughness. In addition, the 5083 alloy stands out with superior corrosion resistance in marine applications, whereas 2024-T8 is not suitable for this field but is much superior in terms of mechanical strength.
MATERIAL COMPOSITION STANDARDS
2024 T8 is available in the following standards.
• 2024 T8 Extruded Round Bar; AMS QQ-A-200/3, ASTM B221, WNR 3.1355, UNS A92024
Characteristic Properties for 2024 T8:
- Strength: Above Average
- Machinability: Good
- Weldability: Moderate (Spot welding is preferred)
- Formability: Low
- Corrosion Resistance: Low
- Heat Treatment: Yes
Some Well-Known Applications for 2024 T8:
Aircraft engine covers,
Hydraulic valve parts,
Also used in aircraft fasteners.
STOCK
2024 T8 is supplied in rod and flat bar forms.
- Rod / Flat Bar




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