5000 Series aluminium alloys are primarily composed of aluminium and magnesium. Other alloying elements may be present in small amounts, such as silicon, copper, and zinc

The best CNC machines for aluminium will be highly dynamic and have high-speed spindles, generally between 18,000 rpm and 25,000 rpm. Here are our recommendations.

2000 Series aluminium alloys can be prone to work hardening, which can lead to chatter and tool wear. It is important to use sharp tools and to take light cuts when machining these alloys.

5000 Series aluminium alloys are machinable with standard tools and techniques. They are known for their good machinability, which is due to the presence of magnesium in the alloy.

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It is used in the construction of aircraft bodies, engines, and other components because it is strong enough to withstand the forces involved in flight, yet it is also lightweight enough to help the aircraft achieve high speeds and efficiency.

Aluminium produces heat and encourages wear/vibration during machining. The hardness of carbide tools and their toughness means they can survive and retain sharpness for longer periods of time than HSS tools.

It’s worth noting that carbide tools are more expensive than HSS alternatives, but they last much longer and produce superior finishes. For those working in high-volume manufacturing, they’re a good choice for saving costs.

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As you would’ve seen from our tables above, different series and grades of aluminium bring different levels of machinability to the table: some are soft and gummy, while others are brittle or chip easily. Knowing what cutting strategies to employ for what grades is essential.

2000 Series aluminium alloys are primarily composed of aluminium and copper. Other alloying elements, such as magnesium, manganese, and silicon, may be present in small amounts.

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As aluminium is so popular and beneficial, it might be easy to assume that it’s straightforward and simple to work with. But this isn’t always the case. There are a huge number of aluminium grades; each brings unique manufacturing challenges to the table.

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2000 Series aluminium alloys are some of the strongest aluminium alloys available. They can be heat treated to achieve great tensile strengths.

1000 Series is highly resistant to corrosion. It is resistant to both acids and bases and can be used in marine and industrial environments.

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1000 Series is easily machinable and can be easily cut, drilled, and shaped. It is a good choice for applications where complex parts are required.

5000 Series aluminium alloys have good corrosion resistance in a variety of environments. They are resistant to corrosion from acids, alkalis, and salt water.

Carbide tools are really the only sensible choice for cutting aluminium: they’re hard, durable, and will outperform steel tools in both lifespan and surface finish.

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Cutting speeds: 2000 series aluminium can be machined at high speeds, but it is important to use a sharp tool to prevent chatter and poor surface finish.

An appropriate coolant is essential when machining aluminium. It helps to cool the workpiece and the cutting tool, and it also helps to lubricate.

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Aluminium is the most common metal found on Earth, making up around 8% of our crust; in 2016 alone, over 57 million tonnes were extracted.

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7000 Series aluminium has reasonable corrosion resistance. While it won’t match 1000 or 6000 series, it is more resistant than 2000 series.

There are a huge number of grades and alloys of aluminium, but a few benefits and properties apply to most forms the metal takes:

2000 Series aluminium alloys are machinable with standard tools and techniques. They are known for their good machinability, which is due to the presence of copper in the alloy.

In this blog, we will dive into the most popular grades of aluminium, explain the challenges, and offer some solutions that may help.

Aluminium is generally machined with high cutting frequencies; this means spindle speeds, angles and removal rates can be much more extreme than with other metals. Combined with the metal’s lightweight nature and reduced ability to dampen, chatter can be a real concern when working with aluminium.

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Because 5000 is quite soft and has a low melting point, it can become gummy and clog tools. This increases the risk of galling and imperfect surface finishes.

Those machining aluminium can also find gummy buildup forming on the cutting tool, causing it to dull and increasing friction.

The 3000 Series aluminium alloys are machinable with standard tools and techniques. They are known for their good machinability, which is due to the presence of manganese in the alloy.

Machining allowances – 1000 series aluminium is soft, so it is important to leave generous machining allowances when cutting parts. This will help to ensure that the final part meets the required tolerances.

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The fast cutting speeds and deep cuts associated with aluminium machining make chip buildup a real issue. A deep pocket filled with aluminium chips increases the chance of sticking, tool damage, work hardening and poor surface finish.

These benefits also help consumers too; cans and foil are widely recycled across the globe, lessening the amount of aluminium that ends up in landfills or incinerators.

In a manufacturing environment, aluminium is simple, cheap and easy to recycle, making it a great choice for those wanting to maximise profits when creating componentry.

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Pretty much all grades of aluminium offer good corrosion resistance, making them well-suited for harsh environments. As such, it’s often found in applications where the material will be exposed to the elements, such as in construction, aerospace and the marine industry.

3000 Series aluminium alloys have good corrosion resistance in a variety of environments. They are resistant to corrosion from acids, alkalis, and salt water.

As we’ve covered already, aluminium has a propensity to heat up and melt when being machined. This melted aluminium is catastrophic to the edges of your tools.

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1000 Series is the purest form of aluminium, containing at least 99% aluminium. It may also contain small amounts of other elements, such as iron, silicon, and copper.

3000 Series aluminium alloys can be prone to work hardening, which can lead to chatter and tool wear. It is important to use sharp tools and to take light cuts when machining these alloys

Because of these benefits, aluminium is ubiquitous in a huge range of industries, from automotive and aerospace to construction and consumer goods.

Aluminum has a high strength-to-weight ratio, making it a good choice for applications where weight is a concern, like in the automotive and aerospace industries.

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6000 Series aluminium alloys have good corrosion resistance in a variety of environments. They are resistant to corrosion from acids, alkalis, and salt water.

3000 Series aluminium alloys are primarily composed of aluminium and manganese. Other alloying elements, such as magnesium, silicon, and copper, may be present in small amounts.

Aluminium is a machinable and relatively soft metal, which means that it can be easily cut, shaped, and drilled. This makes it a good choice for CNC machining and the creation of complex parts.

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1000 Series is relatively weak, with a low tensile strength. It is not suitable for applications where high strength is required.

Surface finish – 1000 series aluminium can be machined to a high surface finish. However, it is important to use the correct cutting tools and parameters to achieve the desired finish.Heat treatment: 1000 series aluminium is not typically heat treated to improve its strength and hardness; rather, Cold working or Work hardening is used to improve its mechanical properties.

First and foremost, aluminium is a great thermal conductor, meaning it can heat up easily during the machining process. This heat can be damaging to cutting tools and workpieces, causing dulling and warping.

Aluminium is generally soft, so most experts recommend fast cutting speeds. This means combining high spindle RPM with high  feed rates. If spindle speeds are too high and feeds too low, the tool will rub excessively against the aluminium, causing heat buildup (known to cause issues with aluminium) and unnecessary tool wear.

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