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Overview of materials for Polyethylene Terephthalate (PET), Unreinforced
Categories: Polymer; Thermoplastic; Polyester, TP; Polyethylene Terephthalate (PET); Polyethylene Terephthalate (PET), Unreinforced
Material Notes: This property data is a summary of similar materials in the MatWeb database for the category "Polyethylene Terephthalate (PET), Unreinforced". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
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Physical PropertiesMetricEnglishComments
Density 0.0700 - 2.50 g/cc0.00253 - 0.0903 lb/in³Average value: 1.36 g/cc Grade Count:134
 1.10 - 1.20 g/cc
@Temperature 285 - 285 °C		0.0397 - 0.0434 lb/in³
@Temperature 545 - 545 °F		Average value: 1.19 g/cc Grade Count:27
Water Absorption 0.0200 - 0.800 %0.0200 - 0.800 %Average value: 0.217 % Grade Count:38
Moisture Absorption at Equilibrium 0.0400 - 0.600 %0.0400 - 0.600 %Average value: 0.292 % Grade Count:25
Water Absorption at Saturation 0.400 - 0.700 %0.400 - 0.700 %Average value: 0.501 % Grade Count:15
Particle Size 2500 - 3500 µm2500 - 3500 µmAverage value: 2800 µm Grade Count:47
Water Vapor Transmission 0.490 - 6.00 g/m²/day0.0316 - 0.386 g/100 in²/dayAverage value: 3.08 g/m²/day Grade Count:6
Oxygen Transmission 5.10 - 23.0 cc-mm/m²-24hr-atm13.0 - 58.4 cc-mil/100 in²-24hr-atmAverage value: 11.1 cc-mm/m²-24hr-atm Grade Count:3
Oxygen Transmission Rate 2.00 - 20.0 cc/m²/day0.129 - 1.29 cc/100 in²/dayAverage value: 14.0 cc/m²/day Grade Count:3
Viscosity Test 62.0 - 86.0 cm³/g0.620 - 0.860 dl/gAverage value: 79.6 cm³/g Grade Count:51
Viscosity Number 0.800 - 85.0 cm³/g0.00800 - 0.850 dl/gAverage value: 54.4 cm³/g Grade Count:3
Maximum Moisture Content 0.0100 - 0.4000.0100 - 0.400Average value: 0.302 Grade Count:6
Thickness 100 - 1200 microns3.94 - 47.2 milAverage value: 367 microns Grade Count:12
Linear Mold Shrinkage 0.00100 - 0.0200 cm/cm0.00100 - 0.0200 in/inAverage value: 0.00667 cm/cm Grade Count:40
Linear Mold Shrinkage, Transverse 0.00100 - 0.0110 cm/cm0.00100 - 0.0110 in/inAverage value: 0.00508 cm/cm Grade Count:18
Melt Flow 3.50 - 70.0 g/10 min3.50 - 70.0 g/10 minAverage value: 43.0 g/10 min Grade Count:13
 
Chemical PropertiesMetricEnglishComments
Acetaldehyde 0.100 - 3.00 ppm0.100 - 3.00 ppmAverage value: 1.12 ppm Grade Count:26
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 80.0 - 96.080.0 - 96.0Average value: 92.5 Grade Count:14
Hardness, Rockwell R 105 - 125105 - 125Average value: 114 Grade Count:24
Hardness, Shore D 71.4 - 87.071.4 - 87.0Average value: 81.2 Grade Count:10
Ball Indentation Hardness 117 - 194 MPa17000 - 28100 psiAverage value: 160 MPa Grade Count:11
Tensile Strength, Ultimate 22.0 - 830 MPa3190 - 120000 psiAverage value: 62.4 MPa Grade Count:40
Film Tensile Strength at Yield, MD 55.0 - 260 MPa7980 - 37700 psiAverage value: 176 MPa Grade Count:17
Film Tensile Strength at Yield, TD 53.0 - 265 MPa7690 - 38400 psiAverage value: 204 MPa Grade Count:17
Tensile Strength, Yield 5.52 - 147 MPa800 - 21300 psiAverage value: 73.6 MPa Grade Count:49
Film Elongation at Break, MD 40.0 - 600 %40.0 - 600 %Average value: 175 % Grade Count:22
Film Elongation at Break, TD 30.0 - 600 %30.0 - 600 %Average value: 137 % Grade Count:21
Film Elongation at Yield, MD 4.00 - 6.00 %4.00 - 6.00 %Average value: 4.67 % Grade Count:3
Film Elongation at Yield, TD 4.00 - 6.00 %4.00 - 6.00 %Average value: 4.67 % Grade Count:3
Elongation at Break 1.10 - 600 %1.10 - 600 %Average value: 66.4 % Grade Count:66
Elongation at Yield 3.50 - 5.83 %3.50 - 5.83 %Average value: 4.14 % Grade Count:23
Modulus of Elasticity 1.57 - 5.20 GPa228 - 754 ksiAverage value: 3.25 GPa Grade Count:58
Flexural Yield Strength 55.3 - 210 MPa8020 - 30500 psiAverage value: 104 MPa Grade Count:45
Flexural Modulus 0.138 - 73.8 GPa20.0 - 10700 ksiAverage value: 5.07 GPa Grade Count:42
Compressive Yield Strength 20.0 - 109 MPa2900 - 15800 psiAverage value: 59.2 MPa Grade Count:12
Compressive Modulus 2.38 - 2.80 GPa345 - 406 ksiAverage value: 2.68 GPa Grade Count:5
Secant Modulus 0.00100 - 2.10 GPa0.145 - 305 ksiAverage value: 0.361 GPa Grade Count:3
Izod Impact, Notched 0.139 - 100 J/cm0.260 - 187 ft-lb/inAverage value: 1.03 J/cm Grade Count:33
 0.270 - 1.28 J/cm
@Temperature -40.0 - -40.0 °C		0.506 - 2.40 ft-lb/in
@Temperature -40.0 - -40.0 °F		Average value: 0.468 J/cm Grade Count:12
Izod Impact, Unnotched 2.67 J/cm - NB5.00 ft-lb/in - NBAverage value: 3.83 J/cm Grade Count:15
 NB - NB
@Temperature -40.0 - -30.0 °C		NB - NB
@Temperature -40.0 - -22.0 °F		Grade Count:11
Izod Impact, Notched (ISO) 2.00 - 8.10 kJ/m²0.952 - 3.85 ft-lb/in²Average value: 4.36 kJ/m² Grade Count:14
 3.10 - 4.20 kJ/m²
@Temperature -40.0 - -40.0 °C		1.48 - 2.00 ft-lb/in²
@Temperature -40.0 - -40.0 °F		Average value: 3.73 kJ/m² Grade Count:6
Izod Impact, Unnotched (ISO) NBNBGrade Count:3
 160 - 181 kJ/m²
@Temperature -40.0 - -40.0 °C		76.1 - 86.1 ft-lb/in²
@Temperature -40.0 - -40.0 °F		Average value: 170 kJ/m² Grade Count:3
Charpy Impact Unnotched 3.00 J/cm² - NB14.3 ft-lb/in² - NBAverage value: 5.66 J/cm² Grade Count:21
 NB - NB
@Temperature -30.0 - -30.0 °C		NB - NB
@Temperature -22.0 - -22.0 °F		Grade Count:4
Charpy Impact, Notched 0.150 - 1.40 J/cm²0.714 - 6.66 ft-lb/in²Average value: 0.474 J/cm² Grade Count:26
 0.270 - 0.500 J/cm²
@Temperature -30.0 - -30.0 °C		1.28 - 2.38 ft-lb/in²
@Temperature -22.0 - -22.0 °F		Average value: 0.347 J/cm² Grade Count:5
Puncture Energy 12.0 - 41.0 J8.85 - 30.2 ft-lbAverage value: 25.7 J Grade Count:8
 13.0 - 39.0 J
@Temperature -40.0 - -40.0 °C		9.59 - 28.8 ft-lb
@Temperature -40.0 - -40.0 °F		Average value: 7.77 J Grade Count:4
 0.800 - 24.0 J
@Temperature -40.0 - -40.0 °C		0.590 - 17.7 ft-lb
@Temperature -40.0 - -40.0 °F		Average value: 7.77 J Grade Count:4
 0.800 - 24.0 J
@Thickness 2.50 - 3.20 mm		0.590 - 17.7 ft-lb
@Thickness 0.0984 - 0.126 in		Average value: 7.77 J Grade Count:4
Coefficient of Friction 0.120 - 0.3000.120 - 0.300Average value: 0.228 Grade Count:13
Coefficient of Friction, Static 0.190 - 0.4000.190 - 0.400Average value: 0.355 Grade Count:14
Tear Strength, Total 15.0 - 120 N3.37 - 27.0 lb (f)Average value: 70.4 N Grade Count:3
Tear Strength 0.265 - 59.0 kN/m1.51 - 337 pliAverage value: 32.4 kN/m Grade Count:5
Elmendorf Tear Strength, MD 3.14 - 4.00 g/micron79.8 - 102 g/milAverage value: 3.71 g/micron Grade Count:3
Elmendorf Tear Strength, TD 3.24 - 5.20 g/micron82.2 - 132 g/milAverage value: 4.55 g/micron Grade Count:3
Dart Drop 1.08 - 2.00 g/micron27.4 - 50.8 g/milAverage value: 1.69 g/micron Grade Count:3
Film Tensile Strength at Break, MD 1.70 - 60.0 MPa247 - 8700 psiAverage value: 27.3 MPa Grade Count:8
Film Tensile Strength at Break, TD 1.60 - 48.0 MPa232 - 6960 psiAverage value: 19.6 MPa Grade Count:7
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 5.00e+6 - 1.00e+18 ohm-cm5.00e+6 - 1.00e+18 ohm-cmAverage value: 5.13e+16 ohm-cm Grade Count:43
Surface Resistance 300 - 1.00e+16 ohm300 - 1.00e+16 ohmAverage value: 2.05e+15 ohm Grade Count:30
Dielectric Constant 2.40 - 3.802.40 - 3.80Average value: 3.25 Grade Count:42
 3.60 - 3.60
@Temperature 150 - 150 °C		3.60 - 3.60
@Temperature 302 - 302 °F		Average value: 3.60 Grade Count:9
 3.60 - 3.60
@Frequency 50.0 - 50.0 Hz		3.60 - 3.60
@Frequency 50.0 - 50.0 Hz		Average value: 3.60 Grade Count:9
Dielectric Strength 15.2 - 60.0 kV/mm386 - 1520 kV/inAverage value: 24.2 kV/mm Grade Count:35
Dissipation Factor 0.00100 - 0.02500.00100 - 0.0250Average value: 0.0102 Grade Count:31
 0.00480 - 0.00480
@Temperature 150 - 150 °C		0.00480 - 0.00480
@Temperature 302 - 302 °F		Average value: 0.00480 Grade Count:3
 0.00480 - 0.00480
@Frequency 50.0 - 50.0 Hz		0.00480 - 0.00480
@Frequency 50.0 - 50.0 Hz		Average value: 0.00480 Grade Count:3
Dielectric Loss Index 0.00100 - 0.01500.00100 - 0.0150Average value: 0.00855 Grade Count:5
Arc Resistance 80.0 - 158 sec80.0 - 158 secAverage value: 107 sec Grade Count:14
Comparative Tracking Index 35.0 - 600 V35.0 - 600 VAverage value: 472 V Grade Count:18
 
Thermal PropertiesMetricEnglishComments
CTE, linear 30.6 - 100 µm/m-°C17.0 - 55.6 µin/in-°FAverage value: 64.4 µm/m-°C Grade Count:42
CTE, linear, Transverse to Flow 48.0 - 80.0 µm/m-°C26.7 - 44.4 µin/in-°FAverage value: 71.1 µm/m-°C Grade Count:9
Specific Heat Capacity 1.00 - 1.50 J/g-°C0.240 - 0.359 BTU/lb-°FAverage value: 1.16 J/g-°C Grade Count:27
 1.21336 - 2.30 J/g-°C
@Temperature 60.0 - 280 °C		0.290000 - 0.550 BTU/lb-°F
@Temperature 140 - 536 °F		Average value: 1.69 J/g-°C Grade Count:24
Thermal Conductivity 0.190 - 0.290 W/m-K1.32 - 2.01 BTU-in/hr-ft²-°FAverage value: 0.260 W/m-K Grade Count:20
Melting Point 200 - 260 °C392 - 500 °FAverage value: 246 °C Grade Count:125
Maximum Service Temperature, Air 60.0 - 225 °C140 - 437 °FAverage value: 131 °C Grade Count:32
Deflection Temperature at 0.46 MPa (66 psi) 66.0 - 250 °C151 - 482 °FAverage value: 114 °C Grade Count:34
Deflection Temperature at 1.8 MPa (264 psi) 60.0 - 230 °C140 - 446 °FAverage value: 103 °C Grade Count:52
Vicat Softening Point 74.0 - 85.0 °C165 - 185 °FAverage value: 79.5 °C Grade Count:10
Minimum Service Temperature, Air -50.0 - -20.0 °C-58.0 - -4.00 °FAverage value: -26.1 °C Grade Count:18
Glass Transition Temp, Tg 70.0 - 82.0 °C158 - 180 °FAverage value: 75.4 °C Grade Count:12
UL RTI, Electrical 75.0 - 150 °C167 - 302 °FAverage value: 113 °C Grade Count:7
UL RTI, Mechanical with Impact 75.0 - 150 °C167 - 302 °FAverage value: 113 °C Grade Count:7
UL RTI, Mechanical without Impact 75.0 - 150 °C167 - 302 °FAverage value: 113 °C Grade Count:7
Flammability, UL94 HB - 5VBHB - 5VBGrade Count:42
Oxygen Index 22.0 - 25.0 %22.0 - 25.0 %Average value: 24.0 % Grade Count:3
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.57 - 1.591.57 - 1.59Average value: 1.58 Grade Count:3
Haze 0.300 - 40.0 %0.300 - 40.0 %Average value: 10.0 % Grade Count:22
Gloss 108 - 166 %108 - 166 %Average value: 131 % Grade Count:6
Transmission, Visible 67.0 - 99.0 %67.0 - 99.0 %Average value: 89.3 % Grade Count:43
 
Processing PropertiesMetricEnglishComments
Processing Temperature 90.0 - 300 °C194 - 572 °FAverage value: 219 °C Grade Count:10
Melt Temperature 120 - 295 °C248 - 563 °FAverage value: 254 °C Grade Count:35
Mold Temperature 10.0 - 163 °C50.0 - 325 °FAverage value: 57.5 °C Grade Count:16
Drying Temperature 65.0 - 160 °C149 - 320 °FAverage value: 98.9 °C Grade Count:14
Moisture Content 0.100 - 0.400 %0.100 - 0.400 %Average value: 0.239 % Grade Count:77

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 consistent 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 MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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