Strong, stiff, and low friction thermoplastic for abrasion resistant parts, automotive applications, and more.
A high strength engineering thermoplastic, acetal features a low coefficient of friction, good chemical resistance, and low moisture absorption. This combination of properties along with its easy machinability make acetal one of the most widely used thermoplastics and an excellent fit for applications requiring high friction resistance and durability.
Properties
High strength, stiffness
Dimensionally stable
Very low moisture absorption
Excellent electrical properties
Easily machinable
Applications
Bearings and gears
Pump parts
Insulators
Surgical instruments
Consumer goods
Conveyor links
Industries
Electrical Engineering
Plumbing
Medical
Industrial
Food Processing
Automotive
Acetal Overview
What is acetal?
Acetal is a high strength engineering plastic known for its low coefficient of friction and exceptional wear properties in dry and wet environments. Acetal is easy to machine and has resistances to moisture, solvents, and chemicals.
Delrin® is considered slightly stronger than acetal - it has greater stiffness and mechanical strength, including tensile strength, impact resistance, and creep resistance. However, acetal retains its properties better than Delrin® at higher temperatures and has a better resistance to hot water and basic solutions.
Is Delrin® and acetal copolymer?
Delrin® is a trade name for acetal homopolymer, while acetal is the name the plastics industry uses to refer to acetal copolymer. Delrin® has similar mechanical properties to copolymer acetal, but is different in a few key areas thanks to its uniform crystalline structure. Compared to acetal, Delrin® exhibits higher stiffness and creep resistance, and is generally slightly better overall when comparing mechanical strength.
What is acetal sheet Delrin®?
Delrin® is a brand name for acetal homopolymer. Like acetal, Delrin® is known for its low coefficient of friction and excellent wear properties. However, Delrin® has better mechanical properties than acetal such as a higher tensile strength and greater impact strength. Acetal has better chemical resistance and is used more in food processing applications.
General Properties1 of Acetal & Delrin®
Property
Acetal
Delrin®
Density (lb/in3)
0.051
0.051
Water Absorption @24 Hours
0.2%
0.2%
Tensile Strength (psi)
9500
11000
Tensile Modulus (psi)
400,000
450,000
Elongation at Break
30%
30%
Flexural Strength (psi)
12000
13000
Flexural Modulus (psi)
400,000
450,000
Compressive Strength (psi)
15000
16000
Hardness, Rockwell
M88 R120
M89 R122
Dielectric Strength (V/mil)
420
450
1The values listed are typical and are meant only as a guide to aid in design. Field testing is always recommended to determine exact values for each application.
WARNING: The products on this page can expose you to chemicals including Formaldehyde, CAS 50-00-0, which are known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.
WARNING: The products on this page can expose you to chemicals including Hexachlorobenzene, CAS 118-74-1, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.