2024 vs 7075 Aluminum Alloy

 This article will specifically study the two aluminum alloys of 2024 and 7075. By understanding the chemical composition, mechanical performance, yield strength, industry application and price advantages of these two alloys, it will help you clearly understand the differences between the two, and the common application areas of each aluminum alloy. Good choice, let's explore this article below.

What is 2024 aluminum alloy?

2024 aluminum alloy is the most well -known aircraft aluminum alloy. When you need a alloy material with excellent intensity weight ratio, it is an ideal alloy. 2024 Aluminum has excellent strength and anti -fatigue, which makes it very suitable for application in the aerospace field.

The main alloy elements in the 2000 series of aluminum aluminum aluminum alloy aluminum alloy are copper. The standard is AMS 4035 or QQ-A-250/4 or GB/T 3190-2017.Due to its high copper content, the corrosion resistance of 2024 is slightly lower. It usually uses or covers a layer of high -purity aluminum with anode oxidation surface to protect. 2024 Aluminum alloy has the characteristics of high strength and anti -fatigue, good processing, and good cutting. However, its corrosion resistance and weldingability are poor. When welding, it is usually vulnerable to the influence of thermal cracks and stress corrosion, and can only be welded, seam welded or flash welding.

The following are the best-selling products of 2024 aluminum alloy:

What is 7075 aluminum alloy?

7075 aluminum alloy is an aluminum alloy with zinc as the main alloy element. This makes 7075 have higher strength and higher strength weight ratio.Its standard is AMS-QQ-A-225/9 or GB/T3880-2017. 7075 aluminum is the lightest and strongest aluminum, as strong as steel, has good fatigue strength and average cutting processing. This is the key feature of aerospace, defense military industry and other industries. However, due to the high alloy component of 7075 aluminum, the hardness is extremely high. Therefore, welding and suppression are very difficult.

The following are the best-selling products of 7075 aluminum alloy:

NO.1 2024 vs 7075 Aluminum Alloy Chemical Composition

ElementComposition (%)
2024 Alloy7075 Alloy
Si0.50.4
Fe0.50.5
Cu3.8-4.91.2-2.0
Mn0.3-0.90.3
Mg1.2-1.82.1-2.9
Cr0.10.18-0.28
Ni--
Zn0.255.1-6.1
Ti0.150.2
Others：Each0.050.05
Others：Total0.150.15
AluminiuminRemainderRemainder

NO.2 2024 vs 7075 Aluminum Alloy Specification

Alloy20247075
Thickness (mm)1-5001-300
Width (mm)500-2650500-3000
Length (mm)500-160001000-12000

NO.3 2024 VS 7075 Aluminum Alloy Status

Alloy20247075
TemperO, T3, T351, T3510, T3511, T36, T361, T4, T42, T6, T62, T651, T72, T8, T81, T851, T8510, T8511, T861O, T6, T62, T651, T6510, T6511, T652, T7, T73, T7351, T73510, T73511, T7352, T76, T7651, T765100, T76511, T62，T652

 

NO.5 2024 vs 7075 Aluminum Mechanical Properties

Below is a comparison of some material properties between 2024 and 7075 aluminum alloys to highlight their differences. For ease of understanding, this article selects 2024 t3 VS 7075 t6, which are the most representative alloys for comparison.

In order to better analyze and understand these two types of aluminum alloys, we have summarized the following table (2024 vs 7075 Mechanical Properties), hoping to be helpful to you.

Material properties20247075
Yield strength483 MPa503 MPa
Modulus of Elasticity73.1 GPa71.7 GPa
Thermal conductivity121-202 W/(m·K)130-190 W/(m·K)
Melting point500 - 650°C477 - 635°C
Hardness (Brinell)120-150HB150-200HB
MachinabilityGoodFair

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[caption id="attachment_1143" align="aligncenter" width="799"]Teda Aluminum Metal Teda Aluminum Metal[/caption]

When evaluating the performance of aluminum alloys, it's crucial to delve into specific aspects. Here's a breakdown of the key factors when comparing 2024 and 7075 aluminum.

1. Yield Strength:

  • 7075 aluminum surpasses 2024 in yield strength.
  • 2024, with a yield strength of 483 MPa, is robust.

2. Modulus of Elasticity:

  • 2024 exhibits a slightly higher elastic modulus (73.1 GPa) than 7075 (71.7 GPa).
  • Both alloys share comparable Young's tensile modulus.

3. Thermal Conductivity:

  • 2024 has a slightly higher thermal conductivity (130-190 W/(m · K)) than 7075 (121-202 W/(m · K)).
  • 7075's higher overall thermal conductivity is vital for applications requiring rapid heat dissipation.

4. Temperature Resistance:

  • 2024 withstands higher temperatures due to its higher melting point (500-650 °C) compared to 7075 (477-635 °C).
  • 7075, despite a lower melting point, excels in heat treatment reactions.

5. Hardness:

  • 7075 boasts higher hardness (150-200 HB) than 2024 (120-150 HB).
  • 2024, while less hard, offers better workability and weldability.

6. Machinability:

  • 2024 exhibits better machinability, albeit with lower strength.
  • 7075's machinability is poor, requiring special measures for improvement.

7. Corrosion Resistance:

  • 7075 outperforms 2024 in corrosion resistance.
  • 2024, with its high copper content, demands corrosion protection in certain environments.

8. Welding Performance:

  • 2024 poses challenges in welding due to its high copper content.
  • 7075 generally has better weldability but requires precise techniques and control.

9. Weight:

  • Both alloys have comparable densities, but 2024 is preferred for light-quality frameworks in aerospace due to its lighter weight.

10. Applications:

2024 Aluminum Alloy:

  • Widely used in aviation, military, automotive, electronics, and machinery industries.

7075 Aluminum Alloy:

  • Commonly employed in aerospace, defense, transportation, sports equipment, and mechanical manufacturing.

11. Price:

  • Generally, 7075 aluminum is pricier due to its higher strength and corrosion resistance.
  • Pricing is influenced by market dynamics, specifications, and supply-demand factors.

Comprehensive Summary:

  • The choice between 2024 and 7075 depends on specific needs and applications.
  • 7075 is favored for high-strength and corrosion-resistant requirements.
  • 2024 suits scenarios with lower strength needs and emphasizes machinability.

Professional Assistance:

For detailed inquiries and personalized aluminum solutions, Teda, a reputable Chinese aluminum processing enterprise, stands ready to assist. With extensive experience, high-quality manufacturing, and a range of certifications, Teda can cater to your unique requirements. Contact them directly for further information.

Note: The information provided is subject to market changes, and it's advisable to consult with professionals for specific projects.

 

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