What is Delrin and what are its key material properties?

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What is Delrin?
Delrin® is an acetal homopolymer that consists primarily of polyoxymethylene and is known for its superior mechanical strength, fatigue resistance, and low friction properties. It has a stiff structure, which provides dimensional stability and low moisture absorption, making it ideal for use in various applications within harsh environments. Processing Delrin® easily is important since this material can be used to make components such as gears, bearings, and bushings with very high precision.

Key Characteristics of Delrin Material
Delrin® possesses several key characteristics that make it popular in the engineering and manufacturing industries.

Mechanical Strength: The tensile strength of Delrin ranges from 62 to 70 MPa, so it can take a lot of stress without changing shape. Because of this property, it is suitable for applications where strength is important.
Fatigue Resistance: Delrin shows high el salvador telegram data durability in cyclic loading environments due to its high resistance to repeated loadings. This feature gives wear-resistant components made from this polymer an extended service life.
Low Friction: Its low coefficient of friction (0.07-0.1 against steel) makes Delrin perfect for use in moving parts since the energy used up will be less and gear systems as well as bearings will wear out slowly.
Dimensional Stability: The material has a thermal expansion coefficient (CTE) value equal to about 80 x 10^-6/°C meaning that when temperatures change or humidity varies, there won’t be any significant difference in shape or size maintained by the material, which is essential, especially where precision matters most like aerospace engineering.
Chemical Resistance: Delrin is highly resistant to many chemicals, such as lubricants, fuels, solvents, etc., making it ideal for use in the automotive industry, among other sectors, due to its ability to withstand the harsh environments found in these sectors.
Moisture Absorption Rate: At around 24 hours, only about 02% of the moisture is absorbed. This contributes to dimensional stability while making usable conditions in different levels of humidity.
Ease Of Machining: It’s possible to machine materials into very fine shapes with good finishes through CNC machining injection molding processes are commonly used.
These properties make Delrin superior over other plastics across a wide range of applications, including but not limited to vehicle parts and performance industrial machines.