Aluminum 8009 Alloy (UNS A98009) – Composition, Properties and Uses
Aluminium 8009 is a special-grade aluminium alloy that is known for its superior corrosion resistance, heat resistance, heat treatability, and machining capabilities. 8009 Alloy’s often used in manufacturing parts for cars, boats, and other vehicles, as well as products like window frames. Let’s take a closer look at what makes UNS A98009 so unique.
8009 Alloy Composition
| Element | Content (%) |
|---|---|
| Aluminum, Al | 86.7 – 88.8 |
| Iron, Fe | 8.4 – 8.9 |
| Silicon, Si | 1.7 – 1.9 |
| Vanadium, V | 1.1 – 1.5 |
| Oxygen, O | ≤ 0.30 |
| Zinc, Zn | ≤ 0.25 |
| Titanium, Ti | ≤ 0.10 |
| Chromium, Cr | ≤ 0.10 |
| Manganese, Mn | ≤ 0.10 |
| Other (each) | ≤ 0.050 |
| Other (total) | ≤ 0.15 |
8009 Alloy Physical Properties
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 2.92 g/cc | 0.105 lb/in³ | |
8009 Alloy Mechanical Properties
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 140 | 140 | |
| Tensile Strength, Ultimate | 450 MPa | 65300 psi | |
| 270 MPa @Temperature 300 °C, Time 3.60e+6 sec |
39200 psi @Temperature 572 °F, Time 1000 hour |
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| 310 MPa @Temperature 250 °C, Time 3.60e+6 sec |
45000 psi @Temperature 482 °F, Time 1000 hour |
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| 350 MPa @Temperature 200 °C, Time 3.60e+6 sec |
50800 psi @Temperature 392 °F, Time 1000 hour |
||
| 380 MPa @Temperature 150 °C, Time 3.60e+6 sec |
55100 psi @Temperature 302 °F, Time 1000 hour |
||
| 410 MPa @Temperature 100 °C, Time 3.60e+6 sec |
59500 psi @Temperature 212 °F, Time 1000 hour |
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| Tensile Strength, Yield | 385 MPa | 55800 psi | |
| 240 MPa @Temperature 300 °C |
34800 psi @Temperature 572 °F |
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| 275 MPa @Temperature 250 °C |
39900 psi @Temperature 482 °F |
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| 310 MPa @Temperature 200 °C |
45000 psi @Temperature 392 °F |
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| 350 MPa @Temperature 150 °C |
50800 psi @Temperature 302 °F |
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| 370 MPa @Temperature 100 °C |
53700 psi @Temperature 212 °F |
||
| Elongation at Yield | 15 % | 15 % | |
| Tensile Modulus | 90.0 GPa | 13100 ksi | |
| Fatigue Strength | 160 MPa @Temperature 250 °C |
23200 psi @Temperature 482 °F |
8009 Alloy Thermal Properties
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 19.0 µm/m-°C | 10.6 µin/in-°F | |
| Thermal Conductivity | 115 W/m-K | 798 BTU-in/hr-ft²-°F |
8009 Alloy Uses
Aluminium 8009 boasts a variety of beneficial uses and is one of the most beneficial aluminum alloys on the market. It is specifically used for high-strength and lightweight structures, making it an ideal choice for structures used in aircraft and automotive industries. It can also be used for architectural applications due to its superior thermal insulation qualities and resistance to corrosion from weathering elements. On top of this, aluminium 8009 has great mechanical properties, which makes it perfect for various manufacturing processes ranging from extrusion to forging, rolling, and coining. Its multiple uses make aluminium 8009 the ultimate choice in cost-efficient yet strong metals suitable for almost any purpose.
Corrosion Resistance
Aluminium 8009 has excellent resistance to corrosion caused by salt water or air exposure. This makes it ideal for use in industries such as automotive and marine, where parts may be exposed to harsh conditions. The high corrosion resistance also makes it suitable for use in window frames which are exposed to the elements year-round.
Heat Resistance
aluminum 8009 also has excellent heat resistance properties, meaning it can withstand temperatures up to 350°C with minimal degradation of its properties. This makes it well suited for applications where parts may be exposed to high temperatures, such as hot air ducts or exhaust systems.
Heat Treatment
Aluminium 8009 is also notable for its ability to be heat treated without losing its corrosion-resistant properties. This means that manufacturers can alter the mechanical properties of the material by subjecting it to different temperatures without compromising the integrity of the material itself. This makes aluminium 8009 an extremely versatile material that can be used in various applications.
Machining & Welding
As well as being highly corrosion-resistant and heat-treatable, aluminum 8009 is relatively easy to machine and weld compared to other grades of aluminum alloys. It’s important to note, however, that its higher strength and hardness, when compared with other grades, require slightly more effort when machining or welding than other grades would require. Nonetheless, these processes can still be achieved with relative ease, given the right equipment and expertise.
Conclusion
Aluminum 8009 has numerous advantages over other grades of aluminium alloys, making it ideal for use in many different industries ranging from automotive and marine manufacturing to window frame construction. It offers superior corrosion resistance, excellent heat-resisting properties, easy machinability and weldability, as well as being the ability to withstand extreme temperature changes without compromising any of its qualities, making this grade of aluminum a great choice for those looking for a reliable material that will stand against wear and tear over time! With all these features combined into one alloy, you can see why Aluminium 8009 is becoming increasingly popular amongst manufacturers across many industries today!
A passionate metal industry expert and blogger. With over 5 years of experience in the field, Palak brings a wealth of knowledge and insight to her writing. Whether discussing the latest trends in the metal industry or sharing tips, she is dedicated to helping others succeed in the metal industry.
