Ertalyte ^® PET-P
(PolyEthylene Terephthalate Polyester) Specifications

TECHNICAL DESCRIPTION

Ertalyte ^® is an unreinforced semi-crystalline thermoplastic polyester based on polyethylene teraphalate (PET-P).

GENERAL PROPERTIES
Ertalyte ^® PET-P offers dimensional stability coupled with excellent wear resistance, low coefficient of friction, high strength, and resistance to moderate acid solutions. Ertalyte's properties make it especially suitable for the manufacture of precision mechanical parts which are capable of sustaining high loads and enduring wear conditions.

Ertalyte ^® has a continuous service temperature of 210°F (100°C) and its melting point is almost 150°F higher than acetals.

Ertalyte ^® is FDA compliant in natural and black colors. Natural Ertalyte ^® is also USDA, 3A-Dairy and Canada AG compliant. It is an excellent candidate for parts used in the food processing and equipment industries.

Ertalyte ^® TX is an internally lubricated version of PET-P, providing enhanced wear and inertness over general purpose nylons or acetals. Containing uniformly dispersed solid lubricant, Ertalyte ^® TX provides a lower wear rate and coefficient of friction than unmodified PET or PBT and even internally lubricated materials such as Delrin ^® AF.

KEY PROPERTIES
• Good for both wet and dry environments • High strength and rigidity • Excellent stain resistance • Good wear resistance • Excellent dimensional stability • Better acid resistance than nylon or acetal

TYPICAL APPLICATIONS
• Food processing equipment components • Process and test equipment manifolds • Carousels • Filter tracks • Rings, disks, rollers • Fuel pump components • Fuel system connectors and rotors

TYPICAL PROPERTIES of ERTALYTE
ASTM or UL test	Property	Ertalyte ® unfilled	Ertalyte ® TX lubricated
PHYSICAL
D792	Density (lb/in³) (g/cm³)	0.051 1.41	0.052 1.44
D570	Water Absorption, 24 hrs (%)	0.07	0.06
MECHANICAL
D638	Tensile Strength (psi)	12,400	11,000
D638	Tensile Modulus (psi)	460,000	500,000
D638	Tensile Elongation at Break (%)	20	5
D790	Flexural Strength (psi)	18,000	16,000
D790	Flexural Modulus (psi)	490,000	460,000
D695	Compressive Strength (psi)	15,000	15,250
D695	Compressive Modulus (psi)	420,000	400,000
D785	Hardness, Rockwell	M93 / R125	M94
D256	IZOD Notched Impact (ft-lb/in)	0.5	0.4
THERMAL
D696	Coefficient of Linear Thermal Expansion (x 10 -5 in./in./°F)	3.30	4.50
D648	Heat Deflection Temp (°F / °C) at 264 psi	240 / 116	180 / 82
D3418	Melting Temperature (°F / °C)	491 / 255	491 / 255
-	Max Operating Temp (°F / °C)	210 / 99	210 / 99
C177	Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10 -4 cal/cm-sec-°C)	2.0 6.9	1.9 6.6
UL94	Flammability Rating	HB	HB
ELECTRICAL
D149	Dielectric Strength (V/mil) short time, 1/8" thick	385	-
D150	Dielectric Constant at 60 Hz	3.4	-
D150	Dissipation Factor at 60 Hz	-	-
D257	Volume Resistivity (ohm-cm)at 50% RH	> 10 13	> 10 13

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.

ERTALYTE is a registered trademark of Quadrant DSM Polymer Corporation.
DELRIN is a registered trademark of DuPont.