Why is Aluminium good for machining? Custom Aluminum CNC Machining Parts from 3Q MACHINING

Mosi Li
Mosi Li

Director Project Engineer at 3Q Machining - China top CNC Machining Custom Part Manufacturer

Can Titanium Be CNC Machined?
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Why Is Aluminium Good For Machining?

Aluminum is the most popular and widely used metal material that good for CNC Machining, due to aluminum cnc machining has advantages as:

  • Light Weight: Aluminum alloy has low density, so it is light weight
  • Good Strength: High strength,  aluminum alloy’s strength is close to or exceed high-quality steel
  • Good Corrosion Resistance: Aluminum alloy can be heat treated or surface treatment to obtain good corrosion resistance
  • Good Formability or Workability: After adding certain alloying elements, a cast aluminum alloy with good casting properties or a deformed aluminum alloy with good processing plasticity can be obtained. Due to its excellent physical properties, aluminum alloys have been widely used in various industries and the defense, medical, and aerospace industries.
  • Good Weldability: Argon tungsten arc welding; Resistance spot welding, seam welding; Pulse argon arc welding; Friction stir welding
  • Good Surface Treatment: Common aluminum alloy surface treatments include electroplating, spraying, wire drawing, anode, sandblasting, passivation, polishing, oxide film treatment, etc.
  • Good Thermal conductivity: The thermal conductivity of aluminum alloy is 121-151/W·(m·k), while the thermal conductivity of stainless steel is only 58.6-41.9/W·(m·k), so the heat transfer performance of aluminum alloy is better than that of stainless steel.
  • Good Conductivity: The conductivity of aluminum is second only to silver, copper and gold
  • Widely End Use Applications:Aluminum alloy profile is the most widely used metal material in industry, and it has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding, construction, decoration and chemical industries.
  • Low Machining Cost: Due to its excellent physical properties, aluminum alloy is easy to be machined, and the aluminum machining can be cheap cost effectively.
  • Fast Machining Timing: Fast machining speed that bring fast machining timing to satisfy fast delivery requirement.

Aluminum is one of the most common use metal material, and it is easy to be machined due to its characters of chips easily and shape easily.

“Chipping easily” means aluminum is easy to be machined by any tools with fast speed, that can save machining timing and it is 3X to 4X faster than stainless steel on the machining speed, when you make large quantities of aluminum parts by CNC Machining, fast speed means you can save 1/3 or 1/2 cost compare to machine steel material; “Shape easily” means you can create any shape of your parts with aluminum material easily by different machinery, therefor you can combine different technique and machinery to machine a aluminum parts to have best cost and timing solution.

As one of the most widely use metal material, aluminum is easy to be machined and it is suitable for many different applications, We can use different grades of aluminum alloy to machine most of CNC Machining Part projects such as prototype samples, end-use products, custom tooling, fixtures, gears, knobs, camera parts, pipe stems and filters, radio parts, mobile phones, tripod fittings, machine parts and many more!

Reading this article to find right aluminum material which good for your CNC Machining project quickly and easily, maximize the benefits for your custom aluminum machining part projects.

choosing right aluminum grade

1xxx series aluminum alloy:

1100,1200 Aluminum 99% 1050 Aluminum 99.5%
Good formability, corrosion resistance, weldability, and low strength.
Household products, electrical appliances, conductive materials, etc. that do not require strength.

2xxx series aluminum alloy:

2017 Duralumin Cu4%, Mg0.5% High strength, poor corrosion resistance, corrosion protection must be done in the corrosive environment. Aviation materials, structural materials. 2024 Super Duralumin Cu4.5%, Mg1.5% The tensile strength reaches 50kg/mm2, and the corrosion resistance is poor. Corrosive environments must be treated with anti-corrosion.

3xxx series aluminum alloy:

3003 Mn1-1.5% Does not reduce the workability and corrosion resistance of pure aluminum to increase its strength. Daily necessities, building materials, containers, etc.
3004 Mn1-1.5%, Mg1% has higher strength than 3003. Aluminum cans, light bulb heads, colored aluminum plates, etc.

4xxx series aluminum alloy:

4032 Si12%, Cu, Ni, Mg each 1% Reduce thermal expansion rate and increase strength and heat resistance. Forged pistons of diesel engines.
4043 Si5% has a low melting point. Welding rod, flux.

5xxx series aluminum alloy:

5005 Mg0.8% Excellent corrosion resistance, processability, weldability, surface gloss and other properties. Vehicle interior materials, building materials, etc.
5052 Mg2.5% representative alloy of medium strength (annealed 20kg/mm2), good formability and corrosion resistance. Ships, vehicles, construction materials, beverage cans.
5083 Mg4.5% non-heat-treated alloy has the highest strength and good weldability. Materials for welding structures such as ships, vehicles, and chemical plants.

6xxx series aluminum alloy:

6061 Mg1%, Si0.6%, Cu0.3% heat-treated alloy, good corrosion resistance, excellent high temperature processability, yield strength about 25kg/mm2, equivalent to SS41 steel. Construction materials, ships, vehicles, land structures, such as iron towers, cranes, etc.
6063 Mg 0.6%, Si 0.4% has excellent extrudability. Aluminum doors and windows, building materials.

7xxx series aluminum alloy:

7075 super duralumin Zn5.5%, Mg2.5%, Cu1.6% belongs to the Al-Zn-Mg-Cu series alloy with the highest strength among aluminum alloys, with a tensile strength of 60kg/mm2. Aviation materials, sporting goods.
7N01 Zn4.5%, Mg1.5% belongs to Al-Zn-Mg series alloy for welding structure, with high strength and good hardenability. Welding structural materials, materials for railway vehicles.

Aluminum CNC Machining Parts From 3Q MACHINING

Aluminum CNC Machining Parts From 3Q MACHINING

3Q Machining provides a variety of Precision Aluminum CNC machining services including CNC milling, turning, EDM (electrical discharge machining) and wire EDM, and surface grinding. With our precision 3-, 4- and 5-axis CNC machining centers, combined with other advanced capabilities and our experienced team, we can handle all technical aspects of creating your prototypes and parts, so your team can focus on bringing your product to market. If you need a precision machining company for plastic and metal CNC machining parts,  we are the best place to go. Contact us today to get your manufacturing solution and details.

Advantages of Aluminum Machining from 3Q MACHINING:

  1. No MOQ

    We can work with MOQ as low as from 1 pcs aluminum prototype part or bulk quantities order, no matter what design you want to order, we can handle it well for you.

  2. Industry-best pricing

    Our engineer and technique team can work out the best solution with competitive prices for your custom aluminum machining parts. Cost and Price is always the priority.

  3. High-precision and tight tolerance

    We can machine the aerospace and medical parts that with tight tolerances and high-precision requirements for global customers, quality and precision is always priority and base for us to finish every project, 1 pcs or large quantities.

  4. Wide range of coatings & finishes

    We can offer a wide range of coatings and finishes for your aluminum machining parts depending on your project requirements.

  5. Fast delivery

    We can finish your parts as fast within 3 days and deliver to your hand within 5 days by DHL/FEDEX/UPS.

  6. Experienced Engineers

    Our engineer team has years of experience in a wide range of industries and can handle all complex design machining part projects.

Most CNC shops will only give quotations for CNC machining as a standalone process based on your part design drawing. But 3Q Machining engineer team will study and discuss with your designer to understand what’s your aluminum product design use, target cost, surface requirement, then have best price and proposal to complete your design drawing modification and product machining with right Aluminum material and machining solution for best results.

When making aluminum parts, 3Q Machining offers several ways to combine 3-axis, 4-axis, or 5-axis CNC machining with other manufacturing processes in order to machine a complex design part with high precision quality for 1 pcs prototype sample or large quantities production. In most of cases, we need to find the best solution to balance between cost & quality & timing, these requires our engineer technique team to work closely with customer product design team to discuss more details with meetings, sales is easy and simple only how much money it is to made, but a project is complex that is relying on teamwork.

What is aluminum cnc machining

What is CNC aluminum?

Aluminum alloy material has features of High machinability and ductility, good strength-to-weight ratio. 

As one of the most widely use metal material, Aluminum alloys is also the most popular metal material for CNC Machining, due to its low cost effective and fast machining speed, plus light weight and high strength, nowadays, more and more custom parts choose to use aluminum alloys to be machined by CNC, 

Especially the aluminum 6061 which is “Good Formability or Workability” & ” Good Weldability” & ” Good Machinability” & “Excellent Corrosion Resistance” & ” Good Strength” & ” excellent high temperature processability”, easy to shape and chip , equivalent to SS304 steel but only 1/2 or 1/3 cost that is mainly use for construction materials, ships, vehicles, land structures, such as iron towers, cranes, etc.

Aluminum alloy 2014 is fair on machinability and can be heat treating to get strengths comparable to steel, but only 1/3 weight of steel, it is prone to corrosion and hard to welding. Suitable for aerospace applications.

Aluminum alloy 3003 is easier to be machined, excellent on weldability and corrosion resistance, but only medium strength and can not be heat treating, Suitable for chemical and marine equipment applications.

Aluminum alloy 6061 is easier to be machined, excellent on weldability and corrosion resistance, easy to be welding, can be heat treating and easy be anodized and good strength.

Aluminum 6061 offers the best combination of mechanical and thermal properties which is most popular CNC Machining material and most widely use for different industrials.

Aluminum alloy 7075 is difficult to be machined, excellent to be heat treating and high strength, now is most popular metal cnc machined material for aerospace application. 

How much is Aluminum CNC Machining?

The different design of your custom aluminum parts require different CNC Machinery to produce it, and the cost would be very different between small quantity and big volume quantities, so the answer of how much to make an aluminum part with CNC machining would be very different.

at 3Q Machining offers no-MOQ to start to make any design of custom aluminum parts that as low as 150 $USD to start to support small business and project.

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