Quadrant EPP Ertalyte® PET-P, Polyester-semi-crystalline thermoplastic, extruded

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Subcategory: Polyester, TP; Polyethylene Terephthalate (PET); Polymer; Thermoplastic

Material Notes:
Ertalyte PET-P is an unreinforced, semi-crystalline thermoplastic polyester based on polyethylene terephthalate (PET-P). It offers the wear resistance of nylon with the dimensional stability of acetal. It is good for both wet and dry environments. The high strength and rigidity of Ertalyte makes it ideal for close tolerance parts. In addition, Ertalyte offers good chemical and abrasion resistance. It is FDA compliant in both natural and black stock shapes. Natural Ertalyte is also USDA, 3A-Dairy and Canada AG compliant. Ertalyte is an excellent candidate for parts used in the food processing and equipment industries.

Data provided by Quadrant Engineering Plastic Products.

Physical Properties	Metric	English	Comments
Specific Gravity	1.41 g/cc	0.0509 lb/in³	ASTM D792
Water Absorption	0.07 %	0.07 %	Immersion, 24hr; ASTM D570(2)
Water Absorption at Saturation	0.9 %	0.9 %	Immersion; ASTM D570(2)
Mechanical Properties
Hardness, Rockwell M	93	93	ASTM D785
Hardness, Rockwell R	125	125	ASTM D785
Hardness, Shore D	87	87	ASTM D2240
Tensile Strength, Ultimate	85.5 MPa	12400 psi	ASTM D638
Elongation at Break	20 %	20 %	ASTM D638
Tensile Modulus	3.17 GPa	460 ksi	ASTM D638
Flexural Modulus	3.38 GPa	490 ksi	ASTM D790
Flexural Yield Strength	124 MPa	18000 psi	ASTM D790
Compressive Strength	103 MPa	15000 psi	10% Def.; ASTM D695
Compressive Modulus	2.9 GPa	420 ksi	ASTM D695
Shear Strength	55.2 MPa	8000 psi	ASTM D732
Coefficient of Friction	0.2	0.2	Dry vs. Steel; QTM55007
K (wear) Factor	121 x 10-8 mm³/N-M	60 x 10-10 in³-min/ft-lb-hr	QTM 55010
Limiting Pressure Velocity	0.0981 MPa-m/sec	2800 psi-ft/min	4:1 safety factor; QTM 55007
Izod Impact, Notched	0.267 J/cm	0.5 ft-lb/in	ASTM D256 Type A
Electrical Properties
Surface Resistivity per Square	Min 1e+013 ohm	Min 1e+013 ohm	EOS/ESD S11.11
Dielectric Constant	3.4	3.4	1MHz; ASTM D150
Dielectric Strength	15.2 kV/mm	385 V/mil	Short Term; ASTM D149
Dissipation Factor	0.02	0.02	1MHz; ASTM D150
Thermal Properties
CTE, linear 68°F	59.4 µm/m-°C	33 µin/in-°F	(-40°F to 300°F); ASTM E831
Thermal Conductivity	0.288 W/m-K	2 BTU-in/hr-ft²-°F	ASTM F433
Melting Point	255 °C	491 °F	Crystalline, Peak; ASTM D3418
Maximum Service Temperature, Air	98.9 °C	210 °F	Long Term
Deflection Temperature at 1.8 MPa (264 psi)	116 °C	240 °F	ASTM D648
Flammability, UL94 (Estimated Rating)	HB	HB	1/8 inch
Qualitative Processing Properties
Compliance - FDA	Compliant
Machinability	2	1-10, 1=Easier to Machine
Service in Alcohols	Acceptable
Service in Aliphatic Hydrocarbons	Acceptable
Service in Aromatic Hydrocarbons	Acceptable
Service in Chlorinated Solvents	Unacceptable
Service in Ethers	Acceptable
Service in Ketones	Acceptable
Service in Strong Acids	Limited
Service in Strong Alkalies	Unacceptable
Service in Sunlight	Limited
Service in Weak Acids	Acceptable
Service in Weak Alkalies	Acceptable

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistant format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to our disclaimer and terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into the Quadrant Engineering Plastics Products database.