Aluminium
Aluminium emerges as one of the most cost-effective metals for CNC machining. Available in a range of different alloys, it boasts a high machinability factor. Moreover, the cost associated with this raw material is low. Aluminium is also highly resistant to corrosion and high temperatures. Additionally, it exhibits a high strength-to-weight ratio. Many machining sectors, including aerospace, automotive, healthcare, and consumer goods, prefer this type of metal.
Stainless steel
Stainless steel, also considered a popular and versatile metal in CNC machining, has a diverse range of alloys. While it may not be as machinable as aluminium, stainless steel maintains good machinability with a low cost per unit of raw material. Additionally, it exhibits excellent strength and hardness. There are three types of stainless steel that are most commonly used in CNC machining, stainless steel 303, 304 and 316. Stainless steel 303 is ideal for producing fitting and fasteners. As for the stainless steel 304, it is often used in milling for chemical processing equipment. Finally, stainless steel 316 is employed for more extreme applications, such as marine or chemical industries
Titanium
Titanium is the most expensive metal in CNC machining. It is challenging to machine due to its low thermal conductivity and high strength. Additionally, the raw material comes at a relatively high cost, leading to elevated material and machining expenses. Titanium possesses several unique properties, such as an excellent strength-to weight ratio. However, this metal is popular in specialized industries such as aerospace and medical.
Copper
Copper has a very high machinability rate. Consequently, it is one of the most cost-effective metals in CNC machining. However, the cost of raw material contributes to the overall price of copper. Copper is found in applications that require good electrical and thermal conductivity. Industries such as automotive and healthcare will use this type of metal.
