Acetal Copolymer

MATERIAL DATA SHEET The information contained herein is typical and intended for REFERENCE USE ONLY. This information should NOT be used as a basis for design, manufacturing or quality assurance purposes. Please contact us for complete, manufacturer-approved material property data sheets. All values below are at 72°F (23°) unless otherwise noted.

---

Acetal Copolymer Specifications

Description

Acetal Copolymer is a high-performance material that has excellent mechanical, electrical, and wear properties. It is engineered to provide outstanding dimensional stability, even when machining parts with complex geometries. Acetal Copolymer is an excellent choice for many bearing and wear applications since it has low coefficient of friction and wears well in both wet and dry environments. It is widely used for assembly jigs and fixtures because of its inherent dimensional stability and excellent wear properties. Acetal Copolymer is often specified for electrical applications when low moisture absorption and high dielectric strength are required. Both natural (white) and black Acetal Copolymer are FDA compliant for use in food processing machinery.

Applications

Jigs and fixtures • Pump and valve parts • Bushings • Bearings • Gears • Wear pads • Electrical components

Advantages of Acetal Copolymer

High strength and stiffness • Low friction • Easy to machine • Good dimensional stability • Low moisture absorption • Resists abrasive wear in both wet and dry environments • Good chemical resistance • Excellent electrical properties • FDA compliant

Manufacturing Capabilities

Rod: 1/8” to 8” diameter • Sheet: .030” to 4” thick • Film: .002” to .029” thick

Color/Grades

Natural (white) FDA • Black FDA • Glass-filled • PTFE-filled (Dielux) • Non-standard colors are available on a custom basis

Typical Properties of Acetal Copolymer

	Units	ASTM Test	Unfilled	25% GF
Mechanical Properties
Flexural Modulus	psi	D790	370,000	1,050,000
Hardness-Rockwell	-	D785	M80	M84
Izod Impact Strength Notched @-40°F	ft•lbs/in	D256	1.2	0.7
Izod Impact Strength Notched @73°F	ft•lbs/in	D256	1.5	1.1
Tensile Elongation @break @ -40°F	%	D638	-	2.0
Tensile Elongation @break @ 73°F	%	D638	-	3.5
Tensile Elongation @break @ 160°F	%	D638	-	5.0
Tensile Modulus	psi	D638	380,000	1,200,000
Tensile Strength @yield @ 73°F	%	D638	-	16,000
Tensile Strength @yield @ -40°F	%	D638	8600	23,100
Tensile Strength @yield @ 160°F	%	D638	-	10,000
Thermal Properties
Continuous Use Temp.	°F	D794	212	-
Coefficient of Thermal Expansion	in/in/°F	D696	-	2.2x10-5
Flam. Rating-UL94 @ .060"	-	-	HB	-
Heat Deflection Temp. @ 66 psi	°F	D648	315	331
Heat Deflection Temp. @ 264 psi	°F	D648	219	325
Other Properties
Specific Gravity	-	D792	1.40	1.62
Water Absorption @ 24 hrs	%	D570	0.20	0.27
Dielectric Constant	1e+006 Hz	D150	3.80	-