6061 Aluminum vs 7075 Aluminum

6061 Aluminum vs 7075 Aluminum
By HDM Team
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When selecting materials for your important project, consider the necessary properties and choose accordingly. 6061 and 7075 are popular aluminum materials with some similar characteristics and applications. This blog by HDM aims to help you distinguish between these two alloys for your project’s benefit.

6061 Aluminum Overview

6061-T6 Aluminum sheets
6061 aluminum alloy is known for its T6 temper mechanical properties, and excels in applications needing strength, formability, and weldability.
Although less corrosion-resistant than some alternatives, its resistance to concentrated nitric acid and versatility renders it essential in welded assemblies, marine frames, aircraft structures, electronic parts, and more.

7075 Aluminum Overview

7075-T651 Aluminium Plate
7075 aluminum alloy emerges as a heavyweight in the realm of aluminum alloys.
Heat-treated through T6 tempering, 7075 aluminum displays high tensile yield and ultimate strength. This makes it essential in applications requiring utmost strength, like aircraft fittings, gears, missile parts, and aerospace/defense components.
Despite a trade-off in corrosion resistance, the alloy’s resilience under cyclical loading and good fatigue strength solidifies its standing as a material of choice in high-stress and critical environments.

Comparison 6061 Aluminum and 7075 Aluminum

Property Difference

6061 Aluminum Alloy

7075 Aluminum Alloy

Lower strength (Tensile, Yield, Shear, Fatigue)

Higher strength (Tensile, Yield, Shear, Fatigue)

Higher elongation at break

Lower elongation at break

Higher thermal and electrical conductivity

Lower thermal and electrical conductivity

Lower density

Higher density

Lower price

Higher price

Application Difference

6061 Aluminum Alloy Applications

7075 Aluminum Alloy Applications

For welding components due to their high weldability

Due to its high strength, it is often used in parts subject to wear and tear

Available as custom forgings

For mold tool manufacturing

Commonly used in thermal applications such as heat exchanger components

Used in defense applications such as missile parts

6061 Aluminum Plate vs 7075 Aluminum Plate

Common Temper

O

T

T6, T651

T6, T651,T73, T7351

6061 aluminum plate is known for its good weldability, formability, and moderate strength, making it suitable for a variety of applications including engineering, transportation, and electronics.
7075 aluminum plate is recognized for its exceptional strength and is used in high-stress applications like aerospace and military components, but its formability is lower.

Conclusion

For high customization projects or those needing specific strength, toughness, and weight, opt for 6061 aluminum alloy. For scenarios demanding greater strength or facing frequent wear and tear, 7075 aluminum alloy is the preferred choice.

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