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Ensinger SPI

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Ensinger TECAPET™ PET Polyethylene Terephthalate (PET)
Categories: Polymer; Thermoplastic; Polyester, TP; Polyethylene Terephthalate (PET); Polyethylene Terephthalate (PET), Unreinforced

Material Notes: TECAPET™ PET is an unreinforced, semicrystalline thermoplastic polyester derived from polyethylene terephthalate. Its excellent wear resistance, low coefficient of friction, high flexural modulus, and superior dimensional stability make it a versatile material for designing mechanical and electro-mechanical parts. Because TECAPET™ PET has no centerline porosity, the possibility of fluid absorption and leakage is virtually eliminated

  • Excellent wear resistance
  • Low coefficient of friction
  • Very good chemical resistance
  • No centerline porosity eliminates the possibility of fluid absorption and leakage
  • Good electrical insulator
  • High mechanical strength
  • Excellent hardness and stiffness
  • Good weather resistance
  • In compliance with FDA regulations 21 CFR 177.1630 for use in contact with food
  • Low water absorption
  • Good resistance to high-energy radiation

TECAPET™ PET superior wear resistance and lack of centerline porosity give it an advantage over other materials for applications involving solvents, chemicals, and food products. TECAPET™ PET is also used in water purification systems, printing equipment, textile components, food-handling equipment, and valves.

Information Provided by Ensinger Industries, Inc.

Vendors: Ensinger High Performance Plastics withstand severe environments, resist harsh chemicals, and perform well in extreme temperatures. They offer weight savings that have potential to drive lower cost systems.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.38 g/ccASTM D792
Density 0.0499 lb/in³ASTM D792
Water Absorption 0.10 %
@Temperature 22.8 °C,
Time 86400 sec
ASTM D570
Water Absorption at Saturation 0.50 %
@Temperature 22.8 °C
ASTM D570
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 94ASTM D785
Tensile Strength, Yield 12500 psi
@Temperature 22.8 °C
ASTM D638
Elongation at Break 20 %
@Temperature 22.8 °C
ASTM D638
Tensile Modulus 470000 psiASTM D638
Flexural Strength 17600 psi
@Temperature 22.8 °C
ASTM D790
Flexural Modulus 430000 psi
@Temperature 22.8 °C
ASTM D790
Izod Impact, Notched 0.700 ft-lb/in
@Temperature 22.8 °C
ASTM D256
Coefficient of Friction, Dynamic 0.25
@Pressure 0.276 MPa
50 fpm; ASTM D3702
Coefficient of Friction, Static 0.19ASTM D3702
K Factor (Wear Factor) 2.1e-8
@Pressure 0.276 MPa
(in3/hr)x(1/PV), 50 fpm; ASTM D3702
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+15 ohm-cmASTM D257
Dielectric Constant 3.4
@Frequency 60 Hz,
Temperature 22.8 °C
50% RH; ASTM D150
Dielectric Strength 400 V/milASTM D149
Dissipation Factor 0.0020
@Frequency 60 Hz,
Temperature 22.8 °C
ASTM D150
 
Thermal PropertiesOriginal ValueComments
CTE, linear 39.0 µin/in-°FASTM D696
Specific Heat Capacity 0.280 BTU/lb-°FUL746B
Thermal Conductivity 2.01 BTU-in/hr-ft²-°F
Melting Point 490 °FASTM D3418
Maximum Service Temperature, Air 230 °FLong Term
 320 °FIntermittent
Deflection Temperature at 0.46 MPa (66 psi) 240 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 175 °FASTM D648
Flammability, UL94 HB
 
Compliance PropertiesOriginal ValueComments
FDA YesSee notes for details.

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