2 key factors must know before design CNC Aluminum Parts

2 key factors for CNC Aluminum Parts

We FRIMA will share more information of CNC Aluminum parts below.

Material of CNC Aluminum Parts

Aluminum is a lightweight, non-magnetic, silver-colored metal that can be formed into almost any shape. It can be rolled into thick plates for armored tanks or thin foil for wrappers. It can also be drawn into wire and made into cans.

Pure aluminum is soft and has limited strength. Small amounts of elements such as copper, magnesium, and zinc are often added to increase stability.

Aluminum is a comparatively new industrial metal produced in commercial quantities for just over 100 years.

There are a few challenges you need to keep in mind designing aluminum parts. 70% of our products are made of aluminum. We are happy to share our professional experience with you.

Here are some most common types of aluminum used in CNC machining:

  • Aluminum 6061 – mainly used on 3,4 and 5-axis CNC milling machines. It has excellent mechanical properties and is easy to weld. The hardness of this alloy ranges from medium to high level. This alloy is easy to anodize and bend.
  • Aluminum 7075 – this alloy has a high impact resistance however, it is not applicable for welding due to its properties. Also, this alloy has high corrosion resistance. It is a very common material in the bicycle and wheelchair industries.
  • Aluminum 2024 – is widely used in the aerospace and military industries. This alloy has good wearability and high corrosion resistance in harsh environments.

    CNC Aluminum Parts

Anodizing Options for CNC Aluminum Parts

Anodizing is one of the most common finishing options, offering strong corrosion protection and enhancing the overall appearance of metal parts. Three types of aluminum anodizing are available from Protolabs:

  • Type I-Chromic Acid: Provides a whisper-thin but still durable coating. Commonly used for welded parts and assemblies, and as a primer before painting. Like all anodized surfaces, it is non-conductive.
  • Type II-Sulfuric Acid: Harder than Type I it offers an exceedingly durable finish. Usage examples include carabiner hooks, flashlight handles, motorcycle parts, and hydraulic valve bodies.
  • Type III-Hard Anodize or Hardcoat: This is the thickest and hardest anodize available and has a wide range of applications for parts and products in automotive, aerospace, heavy equipment, marine industry, general manufacturing, and military/law enforcement.


Order CNC Aluminum Parts with FRIMA

We supply all our metals and alloys from the leading material suppliers. Our company guarantees that your part will be made according to the specifications of your drawings. Our engineers will gladly help you to optimize your design to make your product cost-effective while our machine operators will ensure 100% quality of each aluminum part made on CNC turning & milling machines.

Mar 22, 2023