AS 9100
SPACE 2009
AS 9120
7178
AMS QQ-A-200/13 / AlZn7MgCu / 7178 / T73511
| Chemical Properties | % Value |
| Silicon (Si) | 0,00 - 0,40 |
| Chromium (Cr) | 0,18 - 0,28 |
| Manganese (Mn) | 0,00 - 0,30 |
| Magnesium (Mg) | 2,40 - 3,10 |
| Copper (Cu) | 1,60 - 2,40 |
| Titanium (Ti) | 0,00 - 0,20 |
| Iron (Fe) | 0,00 - 0,50 |
| Zinc (Zn) | 6,30 - 7,30 |
| Aluminium (Al) | Balance |
| Physical Properties | Value |
| Density | 2,83 g/cm³ |
| Melting Point | 477 °C |
| Thermal Expansion | 23.5 µm/m.°C |
| Modulus of Elasticity | 72 GPa |
| Thermal Conductivity | 140 W/m.K |
| Electrical Resistivity | 31 % IACS |
| Mechanical Properties | Value |
| Proof Strength | 503 MPa |
| Yield Strength | 572 MPa |
| Shear Strength | 340 MPa |
| Elongation A50 mm | 11% |
| Hardness | 152 HB |
The 7178 T73511 aluminum alloy is known for its high strength and excellent corrosion resistance. The T73511 temper represents a heat-treated form of the alloy, which provides it with exceptional hardness and durability. These properties make 7178 T73511 ideal for use in demanding applications such as aerospace, space, defense industries, and other high-performance sectors. Additionally, 7178 T73511 aluminum is suitable for anodizing, which enhances its surface appearance while improving its corrosion resistance, making it well-suited for outdoor and marine applications.
In terms of weldability, 7178 T73511 aluminum alloy can be welded, but due to its high strength, the welding process can be challenging. Strong and reliable welds can be achieved with the appropriate welding techniques and heat treatment. Regarding bending, 7178 T73511 aluminum is more difficult to bend due to its high hardness, but it can still be shaped with the right equipment and techniques, making it suitable for structural applications.
The corrosion resistance of 7178 T73511 is excellent, particularly in atmospheric conditions and environments like seawater, making it ideal for use in maritime and outdoor structural applications. Additionally, 7178 T73511 aluminum alloy can be used in high-vibration environments, making it advantageous in industries such as automotive, aerospace, and defense. Its high durability and long-lasting performance further enhance its reliability in these dynamic applications.
The advantages of 7178 T73511 aluminum alloy include high mechanical strength, excellent corrosion resistance, anodizing compatibility, weldability, and suitability for high-vibration environments. However, its high hardness requires careful handling during bending and welding processes. Additionally, this alloy may be harder to machine compared to more flexible alloys. Despite these challenges, 7178 T73511 is an excellent choice for industrial applications that require both high performance and durability.
As Extruded Round/Flat Bar, Wire and Tube; 7178 T73511, ASTM B221, AMS QQ-A-200/13, UNS A97178, ISO AlZn7MgCu
Choosing Factors for 7178 T73511
- Strength: Very good
- Machining: Low
- Weldability: Average
- Formability: Good
- Corrosion Resistance: Okay
- Heat Treating: Yes
Some Well-Known Applications for 7178 T73511
In the landing gear of airplanes,
In the fuselage of airplanes,
It is generally used in the aerospace industry, but also in the construction and automotive sectors.
- Rod / Round Bar / Flat Bar
- Tube/Profile
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