1. ABS

ABS is one of the most widely used thermoplastic materials, known for its excellent mechanical properties, high impact strength, heat resistance, and ease of machining.

With its low density, ABS is ideal for lightweight applications. Before mass production through injection molding, CNC-machined ABS parts are often utilized as prototypes.

2. Nylon

Nylon, also known as polyamide (PA), is a thermoplastic commonly used in engineering due to its exceptional mechanical properties, impact resistance, and high chemical and abrasion resistance. However, it is also known to absorb moisture and water easily.

Nylon 6 and Nylon 66 are the most commonly used variants in CNC machining.

3. Polycarbonate

Polycarbonate is a high-performance thermoplastic known for its exceptional toughness, good machinability, and superior impact resistance (better than ABS). It is typically clear but can be tinted, making it ideal for a wide range of applications, including fluidic devices and automotive glazing.

4. POM

Commonly branded as Delrin, POM is an engineering thermoplastic known for its exceptional machinability.

POM is often the material of choice for CNC machining plastic parts that require high precision, rigidity, excellent dimensional stability at elevated temperatures, and very low water absorption.

5. PTFE

Commonly referred to as Teflon, PTFE is an engineering thermoplastic that offers outstanding chemical and thermal resistance, along with the lowest coefficient of friction of any known solid material.

As one of the few plastics capable of withstanding operating temperatures above 200°C, Teflon is also an excellent electrical insulator. Due to its purely mechanical properties, it is often used as a lining or insert in assemblies.

6. HDPE

HDPE is a thermoplastic material known for its high strength-to-weight ratio and impressive impact resistance. It is lightweight, making it ideal for outdoor and plumbing applications. Like ABS, HDPE is frequently used to create prototypes prior to injection molding.

7. PEEK

PEEK is a high-performance engineering thermoplastic known for its outstanding mechanical properties, thermal stability over a wide temperature range, and excellent resistance to most chemicals.

Due to its high strength-to-weight ratio, PEEK is often used as a replacement for metal parts. With available medical-grade variants, PEEK is also suitable for biomedical applications.

The images are sourced from the internet.

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