Plastics > Engineering Plastic Sheet and Shapes > Acetals (Celcon®/Delrin®) > Acetal Technical Data

Acetal Technical Data

Acetal

Gen. Properties	Temp.	Units	ASTM Test	Unfilled	25% Glass

Physical
Specific Gravity	73°F	gms/cc	D792	1.41	1.59
Water Absorption 24 Hours	73°F	%	D570	0.22	0.29
Mechanical
Tensile Strength Yield	73°F	psi	D638	8,800-10,150	16,000
Tensile Elongation Break	73°F	%	D638	30-70	3-Feb
Tensile Modulus	73°F	10ł psi	D638	410	1200
Flexural Yield Strength	73°F	psi	D790
Flexural Modulus	73°F	10ł psi	D790	370-390	1,050
Izod Impact
Notched	40°F	ft-lbs/in	D256	1.2
Notched	73°F	ft-lbs/in	D256	1.5	1.1
Compressive Strength		10ł psi	D695	4.5(1%)16(10%)
Hardness Rockwell	73°F		D785	M80	M84
Thermal
Deflection Temp. 264 psi		°F	D648	230	322
66 psi		°F	D648	316	331
Cof. Of Thermal Exp.		in/in/°F	D696	4.7x10 -5	2.2x10 -5
Thermal Conductivity		BTU/Hr/Sq.Ft/°F/in		1.6
UL Standard		.060"	UL94	HB
Electrical
Dielectric Cons. 50%RH	73°F	Hz	D150	3.7-3.8x10 +6	4.04x10 +6
Dissipation Fact. 50%RH	73°F	Hz	D150	.006x10 +6	.007x10 +6
Volume Resis. Dry	73°F	ohm/cm	D257	10 +15

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