AERO PLASTICS & SUPPLY CO.
CNC  MACHINING  &  FABRICATION

PET

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 both 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. Ertalyte ® TX is LIGHT GREY in color.

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

> 1013

> 1013

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.

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