2618 Aluminum
2618 aluminum alloy is a high-strength, high-temperature-resistant aluminum alloy, widely used in environments that require high stress and high temperature resistance. It combines excellent strength, high-temperature performance, good machinability, and limited ductility, making it an essential material in several industries. Although it is somewhat lacking in corrosion resistance, its other outstanding properties make it indispensable in aerospace, automotive, and high-temperature industrial applications.
2618 Aluminum Characteristics
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Characteristics
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Description
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Strength and High-Temperature Performance
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2618 aluminum alloy has extremely high tensile strength and yield strength, much higher than many common aluminum alloys, making it suitable for high-stress and high-temperature environments. It is widely used in parts of jet engines, racing engine components, and other structural components that need to withstand extreme heat and load.
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Ductility and Machinability
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Although ductility is low (with a smaller elongation before fracture), it maintains a good balance between strength and high-temperature performance. Its good machinability makes it suitable for high-load components in jet engines and racing engines, such as pistons.
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Corrosion Resistance
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The corrosion resistance of 2618 aluminum alloy is relatively poor, mainly due to its higher copper and nickel content, which makes it more prone to oxidation in wet or corrosive environments. Additional surface treatments (such as coatings or anodizing) are usually required to improve corrosion resistance.
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2618 Aluminum Applications
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Aerospace: Due to its excellent strength and high-temperature performance, 2618 aluminum alloy is commonly used in the aerospace industry, particularly in the manufacturing of jet engine components such as pistons, crankshafts, and other critical parts that endure extreme heat and load. Its high strength ensures the required safety and reliability during flight.
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Automotive Industry: In the high-performance automotive and racing sectors, 2618 aluminum alloy is widely used in engine components, especially pistons. Its high-temperature resistance and strength allow it to maintain performance under extreme working conditions, while reducing damage and wear. 2618 aluminum pistons can absorb a large amount of heat, ensuring that engine components remain in optimal condition in high-temperature environments.
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High-Temperature Industrial Applications: Due to its high-temperature characteristics, 2618 aluminum alloy is also suitable for structural components, pipes, and other mechanical parts in high-temperature industrial environments, particularly in conditions where high loads or extreme temperatures are present.
2618 aluminum alloy is a high-strength, high-temperature-resistant aluminum alloy with relatively low ductility. Although it does not have the same level of corrosion resistance as other aluminum alloys, its excellent mechanical properties make it widely used in aerospace, automotive, and high-temperature industrial fields. Whether in jet engines, racing pistons, or other high-temperature and high-stress environments, 2618 aluminum alloy provides unparalleled performance, making it the material of choice for critical component manufacturing.
2618 Aluminum Mechanical Properties
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Property
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2618 Aluminum
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Elastic (Young's, Tensile) Modulus (GPa)
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71
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Elongation at Break (%)
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5.8
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Fatigue Strength (MPa)
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110
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Poisson's Ratio
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0.33
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Shear Modulus (GPa)
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27
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Shear Strength (MPa)
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260
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Tensile Strength: Ultimate (UTS) (MPa)
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420
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Tensile Strength: Yield (Proof) (MPa)
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350
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2618 Aluminum Thermal Properties
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Property
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2618 Aluminum
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Latent Heat of Fusion (J/g)
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390
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Maximum Temperature: Mechanical (°C)
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210
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Melting Completion (Liquidus) (°C)
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640
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Melting Onset (Solidus) (°C)
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550
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Specific Heat Capacity (J/kg-K)
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880
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Thermal Conductivity (W/m-K)
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160
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Thermal Expansion (µm/m-K)
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22
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2618 Aluminum Electrical Properties
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Property
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2618 Aluminum
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Electrical Conductivity: Equal Volume (% IACS)
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37
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Electrical Conductivity: Equal Weight (% IACS)
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110
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2618 Aluminum Alloy Composition (% by weight)
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Element
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2618 Aluminum
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Aluminum (Al)
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92.4 to 94.9
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Chromium (Cr)
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0
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Copper (Cu)
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1.9 to 2.7
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Iron (Fe)
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0.9 to 1.3
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Magnesium (Mg)
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1.3 to 1.8
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Manganese (Mn)
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0
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Nickel (Ni)
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0.9 to 1.2
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Silicon (Si)
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0.1 to 0.25
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Titanium (Ti)
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0.040 to 0.1
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Zinc (Zn)
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0 to 0.1
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Residuals
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0
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