6061 Vs 7075 Aluminum: the right one for your CNC machining project

Brief Introduction For 6061

Aluminium is a popular choice for CNC machining due to its strength, durability, and corrosion resistance. 6061 aluminum is an alloy that contains magnesium and silicon, making it ideal for applications where high levels of power and resistance to stress are required. When machining 6061 aluminum, it’s essential to use sharp tools and work at slow speeds to avoid damaging the material

This type of aluminium can be tricky to machine, but with careful planning and execution, it’s possible to produce high-quality parts. The most suitable way to ensure success is to work with an experienced CNC machining partner who can help you navigate the challenges of 6061 aluminium.

Brief Introduction For 7075

7075 Aluminum is a high-strength alloy often used for CNC machining applications. It is well suited for applications requiring strength, precision, and dimensional stability.

7075 Aluminum has good machinability and can be easily drilled, tapped, and milled. It also has good welding properties and can be readily joined by welding methods such as TIG, MIG, and resistance welding.

7075 Aluminum is widely used in the aerospace industry and is also commonly used in the construction of aircraft, spacecraft, and armour plate. It is also frequently used in motorsport applications due to its high strength-to-weight ratio. So, if you’re looking for a high-strength aluminium alloy for your next CNC machining project, 7075 is a great choice.

Differences 6061 Vs 7075

1. Chemical Contents:

The main difference between 6061 and 7075 aluminum is the amount of silicon and copper in their composition. 6061 aluminum has 0.6%-0.7% of silicon, whereas 7075 aluminum has 0.5%.

The rest of their design is pretty similar, with a few slight variations. As the silicon content is higher in 6061, it becomes more corrosion resistant than 7075. The chemical content difference is not significant enough to make one better than the other, but it’s something to keep in mind.

2. Price:

In terms of price, 7075 aluminum is more expensive than 6061 aluminum. This is because 6061 aluminum is commonly used and easier to find on the market.

Making a decision based on price alone is not recommended, as each aluminum alloy’s performance should be considered before making a purchase

3. Strength And Hardness:

7075 aluminum is much stronger than 6061 aluminum. It also has a higher hardness, making it more resistant to wear and tear. While 7075 aluminum is more robust, it is also more brittle. It’s more likely to crack or break under heavy loads.

As a result, 7075 aluminum is not always the best choice for CNC machining projects. That said, it can be used if the load is not too heavy and the parts are designed correctly.

4. Corrosion Resistance:

6061 aluminum has better corrosion resistance than 7075 aluminum. This is due to an increased amount of silicon, which inhibits corrosion. Any aluminum alloy can be susceptible to decay, but 6061 is less likely to corrode than 7075. A recent study found that 6061 aluminum has 9% better corrosion resistance than 7075 aluminum. Those numbers may not seem significant, but they can make a big difference in the long run.

5. Applications:

6061 aluminum is most commonly used in the automotive and construction industries. It is also frequently used in the manufacture of aircraft and boats.

7075 aluminum is mainly used in the aerospace industry. It is also commonly used in the construction of aircraft, spacecraft, and armour plates. Significant manufacturers that use 6061 aluminum include Ford, GM, Chrysler, and Honda. Important manufacturers that use 7075 aluminum include Boeing, Airbus, and Lockheed Martin. Can you think of any other major manufacturers that use either 6061 or 7075 aluminum? The list goes on and on.