Acetal

Acetal Product Guide

Overview

Acetal is a thermoplastic made from POM (polyoxymethylene) resin and is a popular option for replacing parts that are traditionally machined from metals. Its physical properties remain unchanged in a variety of environments and in temperatures up to 180°F. Acetal is also known for its high tensile strength, rigidity, impact and solvent resistance, glossy molded surface, and low static/dynamic coefficients of friction. Acetal is commonly used for high speed conveyor lines, bearings, gears, food service applications, valves, and manifolds.

Common Brand/Trade Names

Delrin®, SUSTARIN®, TECAFORM®

Other Resources

Weight Calculator

Products

Acetal Sheet/Plate | Acetal Round Rod | Acetal Sample Pack

Applications

Electrical Insulating Parts
Jigs & Fixtures
Telephone Keypads
Conveyor Belt Links
Fluid Handling


Physical Properties Acetal
Density	0.051-0.054 lb/in3
Tensile Strength	8-11 ksi
Tensile Modulus	310-600 ksi
Elongation at Break Percentage	15-30%
Flexural Strength	12-13.5 ksi
Flexural Modulus	400-485 ksi
Compressive Strength	12.5-16 ksi
Compressive Modulus	250-450 ksi
Izod Impact (notched)	0.8-1 ft-lb/in
Hardness, Rockwell	R89-122
Coefficient of Linear Thermal Expansion	4.7-5.4 x 10^-5 in./in./°F
Heat Deflection Temp. at 26.4 ksi	220-250 °F
Water Absorption %, 24hrs	0.12-0.23%
Thermal Conductivity	1.6-2.5 BTU-in/hr-ft^2-°F (unfilled only)