7075 and 7050 are both high-strength aluminum alloys commonly used in aerospace and other demanding applications. While they share some similarities, they also have notable differences:
Composition
7075 aluminum alloy contains primarily aluminum, zinc, copper, magnesium, and traces of chromium. It is sometimes referred to as an aircraft-grade alloy.
|
Chemical Composition WT(%) |
|||||||||
|
Silicon |
Iron |
Copper |
Magnesium |
Manganese |
Chromium |
Zinc |
Titanium |
Others |
Aluminum |
|
0.4 |
0.5 |
1.2~2 |
2.1~2.9 |
0.3 |
0.18~0.28 |
5.1~5.6 |
0.2 |
0.05 |
Remainder |
7050 aluminum alloy also contains aluminum, zinc, copper, and magnesium, but it typically has a higher zinc content compared to 7075.
|
Chemical Composition WT(%) |
|||||||||
|
Silicon |
Iron |
Copper |
Magnesium |
Manganese |
Chromium |
Zinc |
Titanium |
Others |
Aluminum |
|
0.4 |
0.5 |
1.2~2 |
2.1~2.9 |
0.3 |
0.18~0.28 |
5.1~5.6 |
0.2 |
0.05 |
Remainder |
Strength
7075 is known for its exceptional strength, making it one of the strongest aluminum alloys available. It has a higher ultimate tensile strength and yield strength compared to 7050.
7050 offers excellent strength as well, but it generally has slightly lower strength properties compared to 7075.
Corrosion Resistance
Both alloys have good corrosion resistance, but 7050 may have slightly better resistance to stress corrosion cracking compared to 7075 due to its higher zinc content.
Fatigue Resistance
7050 generally exhibits better fatigue resistance compared to 7075, making it suitable for applications where cyclic loading or repeated stress is a concern.
Weldability
7050 has better weldability compared to 7075. While both alloys can be welded, 7050 is generally less prone to cracking during welding processes.
Applications
7075 is commonly used in aircraft structures, high-performance bicycles, firearms, and other applications where high strength-to-weight ratio and toughness are crucial.
7050 is also used in aerospace applications, particularly in areas where high strength, good fatigue resistance, and corrosion resistance are required, such as aircraft fuselage frames and bulkheads.
Machinability
Both alloys can be machined, but due to their high strength, they can present challenges in machining. However, 7050 may be slightly easier to machine compared to 7075.
Post time: Dec-25-2023