One of the most common questions we receive from clients concerns the electrical insulation properties of materials used in Additive Manufacturing. This parameter is crucial for applications where electrical safety and resistance to electricity flow are essential. The ability of a material to electrically insulate is measured by its volume resistivity, expressed in Ω*cm. The higher the resistivity, the greater the material’s ability to resist the flow of electrical current, ensuring more effective insulation.

In this article, we explore the most common options, analyzing their insulating characteristics and expanding the selection to materials used in the Additive Manufacturing industry.

1. Ultem (PEI): > 6,89 * 10^15 Ω*cm

Ultem (PEI) is one of the best materials for electrical insulation, with an extremely high volume resistivity. It is often used in applications that require maximum electrical safety, such as in the aerospace and automotive sectors. In addition to its insulating capability, Ultem offers excellent thermal and mechanical resistance, making it ideal for components that must withstand high temperatures and critical operating conditions.

2. ASA (Acrilonitrile Stirene Acrilato): >6.83*10^14 Ω*cm

ASA is a material similar to ABS but with superior resistance to weather and UV rays, along with high insulating capability. Its volume resistivity makes it an ideal choice for applications in outdoor environments where a good combination of electrical insulation and resistance to environmental factors is required. It is often used for the production of antenna covers, parts for the automotive industry, and outdoor equipment exposed to harsh weather conditions.

3. Policarbonato (PC): > 6,78 * 10^14 Ω*cm

Polycarbonate is another material with excellent insulating properties. Its volume resistivity, slightly lower than Ultem or ASA, still makes it an excellent choice for electrical and mechanical components. Thanks to its impact resistance and thermal stability, polycarbonate is used in applications such as electrical connectors, lighting systems, and protective visors.

4. PA12 (Poliammide 12): >5,9 * 10^13 Ω*cm

PA12, also known as polyamide 12, is a versatile choice that combines good insulating capabilities with reliable mechanical properties. While its volume resistivity is lower than that of Ultem and polycarbonate, it is ideal for applications where electrical insulation is important but not the only selection criterion. PA12 is widely used for the manufacturing of components subjected to stress, such as automotive parts, flexible tubing, or sensor housings, where both chemical and mechanical resistance are required.

How to Choose the Right Material?

When selecting a material for applications that require electrical insulation, it is important to consider various factors:

• Mechanical Strength: Will the component need to withstand stress or impact?
• Thermal Resistance: Will it be exposed to high temperatures?
• Chemical Resistance: Will it come into contact with harsh substances?
• Flexibility: Should the component be rigid or flexible?

How Can DuePiGreco Help You?

Choosing the right material may seem complicated, but with DuePiGreco by your side, it is possible to find the optimal solution for every need. Thanks to our expertise and wide range of available materials, we can guide you in selecting the material that best fits your technical specifications, combining insulating, mechanical, and thermal properties.

We are ready to tackle every challenge with cutting-edge technology and tailored solutions to help you get the most out of your application!