AMS4079 is a high-strength aluminium alloy with exceptional toughness and fatigue resistance. It belongs to the 7XXX series of aluminium alloys and is widely used in applications that require a high strength-to-weight ratio, including aerospace, defence, automotive, and sports equipment. In this blog post, we will dive deep into the world of AMS 4079, exploring its composition, physical and mechanical properties, uses, and heat treatment. So, let’s get started!
What is AMS 4079?
AMS 4079 (also known as 6061 Aluminum Alloy) is a specification created by the Aerospace Material Specification Committee. This specification sets the standard for elastomeric products for aerospace applications. It covers the requirements for various elastomers used in critical areas, such as seals, gaskets, and O-rings. AMS4079 is essential in ensuring the safety and reliability of aircraft and spacecraft components. Additionally, it helps manufacturers and suppliers maintain consistency in producing high-quality elastomeric products that meet the specific requirements of the aerospace industry. Ultimately, adherence to AMS4079 plays a vital role in guaranteeing the durability and performance of aerospace vehicles.
What Form Is AMS 4079 Available at Piping Mart?
- Pipes
- Tubing
- Sheet Plates
- Pipe Fittings
- Forged Fittings
AMS 4079 Composition
AMS 4079 is a precipitation-hardening aluminium alloy of aluminium, zinc, magnesium, and copper. It has a nominal composition of Al-2.2Zn-1.6Mg-0.22Cu-0.12Zr. Adding zinc, magnesium, and copper imparts excellent strength and corrosion resistance, while including zirconium enhances the grain structure during heat treatment.
| Element | Content (%) |
|---|---|
| Aluminium / Aluminum, Al | 97.9 |
| Magnesium, Mg | 1 |
| Silicon, Si | 0.60 |
| Copper, Cu | 0.28 |
| Chromium, Cr | 0.20 |
AMS 4079 Physical Properties
AMS 4079 exhibits excellent physical properties, making it a top choice for various applications. It has a density of 2.8 g/cm³, a melting temperature of 500°C (932°F), and a thermal conductivity of 145-190 W/mK. Additionally, it offers excellent resistance to wear, abrasion, and fatigue, making it an excellent choice for high-stress applications.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 2.7 g/cm3 | 0.0975 lb/in3 |
| Melting point | 588°C | 1090°F |
AMS 4079 Mechanical Properties
The mechanical properties of AMS 4079 are impressive. It has a yield strength of 430 MPa (63 ksi), tensile strength of 510 MPa (74 ksi), and an elongation of 6%. Furthermore, it has an excellent fatigue life, making it ideal for aerospace and defence applications.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 310 MPa | 45000 psi |
| Yield strength | 276 MPa | 40000 psi |
| Shear strength | 207 MPa | 30000 psi |
| Fatigue strength | 96.5 MPa | 14000 psi |
| Elastic modulus | 68.9 GPa | 10000 ksi |
| Poisson’s ratio | 0.33 | 0.33 |
| Elongation | 12-17% | 12-17% |
| Hardness, Brinell | 95 | 95 |
AMS 4079 Equivalents
| AMS 4117 | ASTM B247 | ASTM B429 | DIN 3.3211 | MIL G-18014 | QQ A-200/8 |
| ASTM B209 | ASTM B307 | ASTM B483 | MIL A-12545 | MIL G-18015 | QQ A-225/8 |
| ASTM B210 | ASTM B313 | ASTM B547 | MIL A-22771 | MIL P-25995 | QQ A-250/11 |
| ASTM B211 | ASTM B316 | ASTM B548 | MIL F-17132A | MIL T-7081 | QQ A-367 |
| ASTM B221 | ASTM B345 | ASTM B632 | MIL F-18280 | MIL W-23351 | QQ A-430 |
| ASTM B234 | ASTM B361 | ASTM F467 | MIL F-39000 | MIL W-85 | QQ WW-T-700/6 |
| ASTM B241 | ASTM B404 | ASTM F468 | MIL F-3922 | QQ A-200/16 | SAE J454 |
AMS 4079 Uses
AMS 4079 is used in various industrial applications, including aerospace, defence, automotive, and sports equipment, thanks to its excellent strength-to-weight ratio, high toughness, and fatigue resistance. Specifically, it manufactures aircraft frames, missile components, automotive parts, and sports equipment, such as bicycle frames and baseball bats.
AMS 4079 Hardness
The hardness of AMS 4079 depends on the heat treatment process used. In the T6 temper, the alloy exhibits a hardness range of 100 to 190 HB, while in the T73 temper, it ranges from 82 to 141 HB. The T6 temper offers the highest strength and is typically used in applications that require maximum strength.
AMS 4079 Heat treatment
AMS 4079 can be heat treated to achieve various properties. The most common heat treatment process used is the T6 and T73 temper. During the T6 temper, the alloy is heated to 505°C (941°F) for several hours and then rapidly cooled in water. This process results in the highest strength and hardness but lower ductility. On the other hand, the T73 temper involves heating the alloy to 250°C (482°F) for several hours and then cooling it in air. This process results in improved properties while maintaining high toughness.
Conclusion:
AMS 4079 material is a high-strength aluminium alloy with exceptional toughness and fatigue resistance. Its unique composition of aluminium, zinc, magnesium, copper, and zirconium makes it an excellent choice for various applications, including aerospace, defence, automotive, and sports equipment. The alloy’s impressive physical and mechanical properties and heat-treatable nature make it a top choice among critical applications manufacturers. Hence, if you’re looking for a material that provides an excellent strength-to-weight ratio, high toughness, and fatigue resistance, AMS 4079 is worth considering.
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.
