ThePipingMart Blog Grades AMS 4163 Aluminium Alloy – Composition, Properties and Uses

AMS 4163 Aluminium Alloy – Composition, Properties and Uses

AMS 4163

Are you familiar with AMS 4163? It is a popular material specification used in the aerospace industry for its remarkable properties. AMS 4163 holds up and performs well even in extreme conditions, making it a top choice for various applications. Whether you’re a materials engineer or a design engineer, knowing what AMS4163 is and its properties can significantly improve your work. In this blog, we’ll explore the composition, physical and mechanical properties, uses, hardness, and heat treatment of AMS 4163.

What is AMS 4163?

AMS 4163 ( also known as Aluminium 2219) is an essential specification for anyone working in aerospace. This specification outlines the requirements for polysulfide sealing compounds used to seal fuel tanks, pressurized cabins, and other critical aircraft components. It provides detailed guidance on the physical and chemical properties these compounds must possess and the testing procedures that must be performed to ensure that they meet the required standards. By adhering to this specification, aerospace professionals can ensure that the sealing compounds used in their projects are reliable, durable, and able to withstand demanding flight conditions. Whether you are a seasoned aerospace engineer or just beginning your career, understanding AMS4163 will be a worthwhile investment.

AMS 4163 Composition

AMS 4163 is a nickel-based alloy material comprising about 60% nickel, 20% chromium, 16% cobalt, and 3.5% molybdenum. The remaining percentage includes small percentages of other elements like iron, manganese, and silicon. Adding cobalt and molybdenum enhances the material’s high-temperature strength and corrosion resistance.

Element Content (%)
Aluminum, Al 93
Copper, Cu 6.3
Manganese, Mn 0.3
Zirconium, Zr 0.18
Vanadium, V 0.10
Titanium, Ti 0.06

AMS 4163 Physical Properties

AMS 4163 has an excellent combination of physical properties, making it ideal for high-temperature applications. It has a density of 8.4 g/cm³, a melting point of 1371°C, and a thermal conductivity of 14.5 W/m•K. The material’s coefficient of thermal expansion is 12.1 μm/m•K, and its specific heat is 430 J/kg•K.

Properties Metric Imperial
Density 2.6-2.8 g/cm3 0.0939- 0.101 lb/in3
Melting point 510°C 950°F

AMS 4163 Mechanical Properties

The mechanical properties of AMS 4163 make it a preferred material for high-stress applications. It has a tensile strength of 1035 – 1200 MPa and a yield strength of 690 MPa. Its elongation at break is 12%, and its modulus of elasticity is 210 GPa. AMS 4163 also boasts excellent fatigue resistance and creep strength, even at elevated temperatures.

Properties Metric Imperial
Tensile strength 170 MPa 24656 ksi
Yield strength 76 MPa 1022 ksi
Fatigue strength 105 MPa 15229
Elastic modulus 70-80 GPa 10153-11603 ksi
Poisson’s ratio 0.33 0.33
Elongation 18% 18%

AMS 4163 Equivalent

AMS 4066 ASTM B211 ASTM B247 MIL A-46808 QQ A-367
AMS 4068 ASTM B221 ASTM B316 MIL A-8920 QQ A-430
ASTM B209 ASTM B241 MIL A-46118 QQ A-250\30 SAE J454

AMS 4163 Uses

Due to its unique combination of properties, AMS 4163 is widely used in various applications in the aerospace industry, such as gas turbine engine components, exhaust nozzles, combustion chambers, and heat exchangers. The material is also utilized in the chemical and petrochemical industries due to its excellent corrosion resistance properties.

AMS 4163 Hardness

AMS 4163 has a typical hardness of 35 HRC when the solution is heat-treated and aged. However, the material’s hardness can vary depending on factors such as the heat treatment process and the thickness of the material.

AMS 4163 Heat treatment

AMS 4163’s heat treatment process involves solution heat treatment at 1148°C for two hours, followed by air cooling. This process enhances the material’s mechanical properties, corrosion resistance, and creep strength. After heat treatment, the material is cold worked, then aged at 788°C for eight hours to achieve maximum mechanical properties.


AMS 4163 material is a remarkable material with unique properties suitable for challenging applications. From its composition to physical and mechanical properties, hardness, and heat treatment, it is a top choice for the aerospace and chemical industries. Knowing the properties of AMS 4163 can significantly improve your work as a materials or design engineer. As the industry demands higher performance and lighter materials, AMS 4163 continues to prove its worth as a reliable and efficient material.

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