Jan. 20, 2025
2618 aluminum performs excellently in high strength and high temperature environments, while 4032 aluminum is known for its better elongation, lower density, and superior wear resistance at high temperatures, making it more suitable for certain automotive and performance applications.
| Property | 2618 Aluminum Alloy | 4032 Aluminum Alloy |
| Tensile Strength | Higher (suitable for high-load applications) | Slightly lower, with better elongation (higher strain before fracture) |
| Fatigue Strength | Similar to 4032, with comparable fatigue resistance | Similar to 2618, with comparable fatigue resistance |
| Yield Strength | Higher (can withstand more stress before permanent deformation) | Lower (more prone to permanent deformation) |
| Melting Point | Higher (suitable for higher temperature environments) | Lower (not suitable for extreme high-temperature environments) |
| Thermal Conductivity | Higher (better for heat dissipation) | Lower |
| Coefficient of Thermal Expansion | Slightly higher (expands more with temperature changes) | Slightly lower |
| Electrical Conductivity | Higher (suitable for electrical applications) | Lower |
| Copper Content | Higher (helps improve strength and high-temperature performance) | Lower |
| Silicon Content | Lower | Higher (enhances wear resistance and high-temperature strength) |
| Magnesium and Nickel Content | Higher (improves strength and high-temperature deformation resistance) | Lower |
2618 aluminum alloy, known for its excellent high strength and high-temperature resistance, is mainly used in aerospace, engine components, and other high-stress, high-heat environments.
4032 aluminum alloy excels in wear resistance and high-temperature performance, and is widely used in automotive engine parts, racing cars, high-performance machinery, and other high-load, high-temperature applications.
2618 aluminum alloy is known for its exceptional high strength and high-temperature performance, making it particularly suitable for applications that require withstanding high loads and high-temperature environments.
Aerospace Components:
Due to its excellent strength and durability at high temperatures, 2618 aluminum alloy is widely used in aerospace for structural components in aircraft and spacecraft. Common applications include fuselage frames, wing spars, engine parts, and other high-stress components, especially in environments where high temperature and corrosion resistance are required.
Engine Parts:
The high-strength characteristics of 2618 aluminum alloy make it an ideal choice for engine components such as turbine blades and high-temperature seals. It can withstand the high temperatures and pressures inside engines, ensuring the long-term stability and reliability of the parts.
High-Stress, High-Heat Applications:
Suitable for industrial applications that encounter high temperatures and high mechanical loads during operation, such as power generation equipment, heavy machinery, and metallurgical equipment. 2618 aluminum alloy maintains good mechanical properties in these extreme environments, extending its service life.
Although 4032 aluminum alloy is slightly weaker than 2618, it offers unique advantages due to its excellent wear resistance, good high-temperature performance, and machinability, making it ideal for high-temperature and high-load applications.
Automotive Engine Parts:
Due to its excellent high-temperature and wear resistance properties, 4032 aluminum alloy is commonly used in engine components for high-performance cars, such as pistons, cylinder heads, and engine blocks. It maintains good durability and stability in high-speed and high-temperature operating environments, effectively improving engine performance and service life.
Racing and Performance Machinery:
4032 aluminum alloy is very suitable for racing and performance machinery applications due to its lower density and better strength-to-weight ratio. This allows racing parts, such as engine components and suspension systems, to withstand high loads while minimizing weight, improving acceleration and handling performance.
High-Temperature and High-Wear Environments:
In high-temperature and high-wear environments, 4032 aluminum alloy is also widely used in fields such as industrial machinery, turbine equipment, and aircraft engines. Its high wear resistance and thermal stability make it perform excellently in mechanical parts that need to resist both high temperatures and wear.
| Property | 2618 Aluminum | 4032 Aluminum |
| Brinell Hardness | 120 | 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 71 | 73 |
| Elongation at Break, % | 5.8 | 6.7 |
| Fatigue Strength, MPa | 110 | 110 |
| Poisson's Ratio | 0.33 | 0.33 |
| Shear Modulus, GPa | 27 | 28 |
| Shear Strength, MPa | 260 | 260 |
| Tensile Strength: Ultimate (UTS), MPa | 420 | 390 |
| Tensile Strength: Yield (Proof), MPa | 350 | 320 |
| Property | 2618 Aluminum | 4032 Aluminum |
| Latent Heat of Fusion, J/g | 390 | 570 |
| Maximum Temperature: Mechanical, °C | 210 | 180 |
| Melting Completion (Liquidus), °C | 640 | 570 |
| Melting Onset (Solidus), °C | 550 | 530 |
| Specific Heat Capacity, J/kg-K | 880 | 900 |
| Thermal Conductivity, W/m-K | 160 | 140 |
| Thermal Expansion, µm/m-K | 22 | 19 |
| Property | 2618 Aluminum | 4032 Aluminum |
| Electrical Conductivity: Equal Volume, % IACS | 37 | 34 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 110 | 120 |
| Element | 2618 Aluminum | 4032 Aluminum |
| Aluminum (Al), % | 92.4 to 94.9 | 81.1 to 87.2 |
| Chromium (Cr), % | 0 | 0 to 0.1 |
| Copper (Cu), % | 1.9 to 2.7 | 0.5 to 1.3 |
| Iron (Fe), % | 0.9 to 1.3 | 0 to 1.0 |
| Magnesium (Mg), % | 1.3 to 1.8 | 0.8 to 1.3 |
| Nickel (Ni), % | 0.9 to 1.2 | 0.5 to 1.3 |
| Silicon (Si), % | 0.1 to 0.25 | 11 to 13.5 |
| Titanium (Ti), % | 0.040 to 0.1 | 0 |
| Zinc (Zn), % | 0 to 0.1 | 0 to 0.25 |
| Residuals, % | 0 | 0 to 0.15 |
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