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Common Material in CNC Medical Parts Machining


Due to the increasing high requirements on precision of CNC machining industry, the CNC machining has gradually become a popular technology in the medical manufacturing industry. CNC machining can produce products with superior precision and accuracy, and the medical industry needs to meet safety and precision. Briefly the common materials for the medical device parts machining and the issues that need attention when selecting materials in below.

First of all, the medical parts machining field is mainly targeted at the customer group for the medical equipment industry, anesthesia machines, ventilators, monitors, biochemical analysis systems, etc., such medical parts processing commonly used materials are stainless steel, the brand is SUS316, SUS304, SUS303, etc.; In terms of aluminum, 2A12, AL6061, etc., there are also some carbon steel materials, which need to be heat treated after processing to improve the strength of parts and meet the functional requirements of use. There are also some non-metallic materials, such as POM, nylon, PEEK, etc., medical parts processing should pay attention to the smooth hole of the product after processing, no burrs and other excess.

The main reason for the selection of stainless steel materials for medical parts processing is that the medicine in contact with medical parts has a certain corrosion, not only the corrosion resistance of the material is good, the surface finish of the product is also very important, after the liquid flows, there can be no residue to ensure that the parts are not corroded. Products similar to aluminum are generally anodized and hard oxidized in surface treatment to improve the corrosion resistance of medical parts after processing.

Except the good chemical resistance, there are another 2 characteristics need to consider for material selection of medical parts machining :

Radiation Resistance - Medical components can be exposed to radiation from sources such as magnetic resonance imaging, X-rays and chemotherapy, and radiation can affect the service life of the product. Therefore, it is important to choose processed materials that will not degrade when exposed to radiation, especially for devices used in surgery, X-ray machines, and other diagnostic tools.

Sterilization Requirements - In the medical industry, com

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