Delrin 150 vs POM in CNC Machining Services

Delrin 150 and POM (Polyoxymethylene) are two widely used materials in CNC machining, offering impressive mechanical properties. While they both belong to the acetal family, there are several differences that influence their performance in CNC applications. In this article, we’ll compare Delrin 150 and POM across various dimensions, including mechanical properties, machinability, price, and applications.

Table des matières

• Introduction to Delrin 150 and POM
• What is Delrin 150?
• What is POM (Polyoxymethylene)?
• Delrin 150 vs POM: Key Differences
• Properties Comparison of Delrin 150 and POM
• Delrin 150 vs Delrin – What’s the Difference?
• Delrin 150 vs POM Price
• Machinability: Delrin 150 vs POM
• Applications of Delrin 150 and POM
• Conclusion: Which is Better for CNC Machining?

Introduction to Delrin 150 and POM

Delrin 150 and POM are high-performance thermoplastic materials, both offering excellent mechanical properties for CNC machining. Delrin 150 is a homopolymer form of POM, while POM refers to both homopolymer and copolymer versions. Both are widely used for precision machining in applications requiring strength, low friction, and dimensional stability.

What is Delrin 150?

Delrin 150 is a grade of acetal homopolymer, known for its excellent mechanical properties such as high tensile strength, low friction, and high resistance to wear. It is commonly used in CNC machining for parts such as gears, bearings, and precision components. It is often preferred for applications requiring higher strength and impact resistance.

What is POM (Polyoxymethylene)?

POM (Polyoxymethylene) is a thermoplastic polymer that offers superior strength, stiffness, and low friction. It is commonly used in precision machining applications and is available in two types: homopolymer and copolymer. While both types share similar properties, homopolymer POM (such as Delrin 150) tends to offer better mechanical performance than copolymer versions.

Delrin 150 vs POM: Key Differences

While Delrin 150 and POM share many similarities, there are several key differences between the two materials. The primary distinction is that Delrin 150 is a homopolymer grade, known for superior mechanical strength and resistance to impact compared to the more general POM, which includes both homopolymer and copolymer versions.

Properties Comparison of Delrin 150 and POM

To better understand the differences between Delrin 150 and POM, let’s break down their properties individually and compare them across multiple dimensions.

Tensile Strength: Delrin 150 vs POM

When comparing the tensile strength of Delrin 150 and POM, Delrin 150 typically outperforms standard POM. Delrin 150 has a higher tensile strength, making it more resistant to deformation under load. This higher strength makes Delrin 150 more suitable for demanding mechanical applications where parts will experience high stress.

Compressive Strength: Delrin 150 vs POM

Delrin 150 also has a slight edge in terms of compressive strength. The ability to withstand compressive forces is crucial for parts subjected to heavy loads, and Delrin 150 offers better resistance in such applications compared to POM, which is slightly weaker in this regard.

Hardness: Delrin 150 vs POM

In terms of hardness, Delrin 150 is slightly harder than POM. This higher hardness gives Delrin 150 improved resistance to wear and better durability under frictional forces, making it suitable for precision components that need to maintain dimensional stability over time.

Impact Resistance: Delrin 150 vs POM

Impact resistance is another area where Delrin 150 shows better performance than POM. Delrin 150’s higher impact strength allows it to better withstand mechanical stresses and forces without cracking or breaking. POM, while still durable, is not as resistant to impact as Delrin 150.

Density: Delrin 150 vs POM

Both Delrin 150 and POM have very similar densities, but Delrin 150 is slightly denser, which may contribute to its higher strength and wear resistance. The slight difference in density typically has little impact on most CNC machining applications but could be a factor in extremely precise or weight-sensitive components.

Delrin 150 vs Delrin – What’s the Difference?

Delrin 150 is a superior grade of the Delrin family. While Delrin 100 is another popular grade of acetal, it has slightly lower mechanical strength and impact resistance compared to Delrin 150. Delrin 150 is preferred for applications that require higher performance and durability, particularly in harsh or high-stress environments.

Delrin 150 vs POM Price

Delrin 150 is generally more expensive than standard POM due to its superior mechanical properties. The price difference may not be significant for larger quantities, but Delrin 150’s added cost is often justified by its enhanced performance and durability in demanding CNC machining applications.

Machinability: Delrin 150 vs POM

Both Delrin 150 and POM are easy to machine and provide excellent results when processed using CNC equipment. However, due to Delrin 150’s higher impact resistance and slightly better hardness, it is often easier to machine compared to POM, which may experience some chipping or cracking under stress during machining.

Applications of Delrin 150 and POM

Both materials are used in various industries, including automotive, aerospace, medical, and consumer goods. Typical applications include:

• Bearings and bushings
• Precision gears
• Composants automobiles
• Medical device parts

Conclusion: Which is Better for CNC Machining?

Delrin 150 and POM both offer excellent properties for CNC machining, but Delrin 150 is typically a better choice for applications that require higher strength, impact resistance, and durability. While POM is more cost-effective and can be suitable for less demanding applications, Delrin 150 provides superior performance in most CNC machining environments.