Overview of materials for Polyethylene Terephthalate (PET), Unreinforced

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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 Properties	Metric	English	Comments

Bulk Density	0.800 - 0.931 g/cc	0.0289 - 0.0336 lb/in³	Average value: 0.849 g/cc Grade Count:35
Density	1.25 - 1.91 g/cc	0.0452 - 0.0690 lb/in³	Average value: 1.42 g/cc Grade Count:84
	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:26
Apparent Bulk Density	0.000850 g/cc	0.0000307 lb/in³	Average value: 0.000850 g/cc Grade Count:5
Water Absorption	0.0500 - 0.800 %	0.0500 - 0.800 %	Average value: 0.146 % Grade Count:32
Moisture Absorption at Equilibrium	0.200 - 0.300 %	0.200 - 0.300 %	Average value: 0.262 % Grade Count:14
Water Absorption at Saturation	0.400 - 0.500 %	0.400 - 0.500 %	Average value: 0.484 % Grade Count:8
Particle Size	2500 µm	2500 µm	Average value: 2500 µm Grade Count:19
Water Vapor Transmission	0.490 - 6.00 g/m²/day	0.0316 - 0.386 g/100 in²/day	Average value: 4.16 g/m²/day Grade Count:3
Oxygen Transmission	5.10 - 23.0 cc-mm/m²-24hr-atm	13.0 - 58.4 cc-mil/100 in²-24hr-atm	Average value: 11.1 cc-mm/m²-24hr-atm Grade Count:3
Viscosity Measurement	0.550 - 0.980	0.550 - 0.980	Average value: 0.732 Grade Count:53
Viscosity Test	74.0 - 86.0 cm³/g	74.0 - 86.0 cm³/g	Average value: 80.0 cm³/g Grade Count:6
Thickness	250 - 254 microns	9.84 - 10.0 mil	Average value: 251 microns Grade Count:4
Linear Mold Shrinkage	0.00100 - 0.0200 cm/cm	0.00100 - 0.0200 in/in	Average value: 0.00402 cm/cm Grade Count:33
Linear Mold Shrinkage, Transverse	0.00200 - 0.0110 cm/cm	0.00200 - 0.0110 in/in	Average value: 0.00822 cm/cm Grade Count:18

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	80.0 - 95.0	80.0 - 95.0	Average value: 91.9 Grade Count:21
Hardness, Rockwell R	105 - 120	105 - 120	Average value: 112 Grade Count:14
Ball Indentation Hardness	160 - 170 MPa	23200 - 24700 psi	Average value: 167 MPa Grade Count:3
Tensile Strength, Ultimate	22.0 - 207 MPa	3190 - 30000 psi	Average value: 80.7 MPa Grade Count:45
Film Tensile Strength at Yield, MD	55.0 - 59.0 MPa	7980 - 8560 psi	Average value: 57.3 MPa Grade Count:3
Film Tensile Strength at Yield, TD	53.0 - 57.0 MPa	7690 - 8270 psi	Average value: 55.7 MPa Grade Count:3
Film Elongation at Break, MD	40.0 - 600 %	40.0 - 600 %	Average value: 311 % Grade Count:4
Film Elongation at Break, TD	200 - 600 %	200 - 600 %	Average value: 333 % Grade Count:3
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
Tensile Strength, Yield	47.0 - 90.0 MPa	6820 - 13100 psi	Average value: 57.5 MPa Grade Count:23
Elongation at Break	1.50 - 600 %	1.50 - 600 %	Average value: 64.6 % Grade Count:51
Elongation at Yield	3.50 - 30.0 %	3.50 - 30.0 %	Average value: 5.39 % Grade Count:17
Modulus of Elasticity	1.83 - 14.0 GPa	265 - 2030 ksi	Average value: 2.96 GPa Grade Count:27
Flexural Modulus	1.90 - 15.2 GPa	276 - 2200 ksi	Average value: 5.70 GPa Grade Count:37
Flexural Yield Strength	55.0 - 240 MPa	7980 - 34800 psi	Average value: 128 MPa Grade Count:42
Compressive Yield Strength	20.0 - 123 MPa	2900 - 17800 psi	Average value: 90.7 MPa Grade Count:7
Izod Impact, Unnotched	2.67 J/cm - NB	5.00 ft-lb/in - NB	Average value: 2.67 J/cm Grade Count:12
Izod Impact, Unnotched (ISO)	NB	NB	Grade Count:3
Izod Impact, Unnotched Low Temp (ISO)	160 - 181 kJ/m²	76.1 - 86.1 ft-lb/in²	Average value: 170 kJ/m² Grade Count:3
Izod Impact, Notched, Low Temp (ISO)	3.10 - 4.20 kJ/m²	1.48 - 2.00 ft-lb/in²	Average value: 3.73 kJ/m² Grade Count:6
Charpy Impact Unnotched	3.00 J/cm² - NB	14.3 ft-lb/in² - NB	Average value: 5.99 J/cm² Grade Count:15
	NB - NB @Temperature -30.0 - -30.0 °C	NB - NB @Temperature -22.0 - -22.0 °F	Grade Count:4
Charpy Impact, Notched	0.200 - 1.40 J/cm²	0.952 - 6.66 ft-lb/in²	Average value: 0.674 J/cm² Grade Count:19
	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: 0.345 J/cm² Grade Count:4
Puncture Energy	0.800 - 41.0 J	0.590 - 30.2 ft-lb	Average value: 18.2 J Grade Count:8
Coefficient of Friction	0.190 - 0.250	0.190 - 0.250	Average value: 0.235 Grade Count:4
Tear Strength, Total	15.0 - 120 N	3.37 - 27.0 lb (f)	Average value: 70.4 N Grade Count:3
Elmendorf Tear Strength, MD	3.14 - 4.00 g/micron	79.8 - 102 g/mil	Average value: 3.71 g/micron Grade Count:3
Elmendorf Tear Strength, TD	3.24 - 5.20 g/micron	82.2 - 132 g/mil	Average value: 4.55 g/micron Grade Count:3
Dart Drop	1.08 - 2.00 g/micron	27.4 - 50.8 g/mil	Average value: 1.69 g/micron Grade Count:3
Taber Abrasion, mg/1000 Cycles	15.0 - 40.0	15.0 - 40.0	Average value: 29.3 Grade Count:12
Film Tensile Strength at Break, MD	13.8 - 60.0 MPa	2000 - 8700 psi	Average value: 51.8 MPa Grade Count:4
Film Tensile Strength at Break, TD	39.0 - 48.0 MPa	5660 - 6960 psi	Average value: 42.0 MPa Grade Count:3
Izod Impact, Notched @ -40°C	0.270 - 0.630 J/cm	0.506 - 1.18 ft-lb/in	Average value: 0.395 J/cm Grade Count:11
Izod Impact, Unnotched @ -40°C	NB	NB	Grade Count:9
Izod Impact, Notched	0.139 - 100 J/cm	0.260 - 187 ft-lb/in	Average value: 0.752 J/cm Grade Count:34
Izod Impact, Notched (ISO)	2.00 - 10.0 kJ/m²	0.952 - 4.76 ft-lb/in²	Average value: 5.21 kJ/m² Grade Count:11

Electrical Properties	Metric	English	Comments
Electrical Resistivity	5.00e+6 - 1.00e+17 ohm-cm	5.00e+6 - 1.00e+17 ohm-cm	Average value: 8.27e+15 ohm-cm Grade Count:37
Surface Resistance	1.00e+14 - 1.00e+16 ohm	1.00e+14 - 1.00e+16 ohm	Average value: 2.04e+15 ohm Grade Count:13
Dielectric Constant	2.40 - 3.90	2.40 - 3.90	Average value: 3.27 Grade Count:18
Dielectric Strength	15.7 - 60.0 kV/mm	399 - 1520 kV/in	Average value: 24.7 kV/mm Grade Count:33
Dissipation Factor	0.00100 - 0.0250	0.00100 - 0.0250	Average value: 0.0105 Grade Count:15
Arc Resistance	80.0 - 181 sec	80.0 - 181 sec	Average value: 127 sec Grade Count:22
Comparative Tracking Index	175 - 600 V	175 - 600 V	Average value: 371 V Grade Count:26

Thermal Properties	Metric	English	Comments
Heat of Fusion	56.0 - 65.0 J/g	24.1 - 28.0 BTU/lb	Average value: 60.0 J/g Grade Count:21
CTE, linear	25.0 - 92.0 µm/m-°C	13.9 - 51.1 µin/in-°F	Average value: 54.0 µm/m-°C Grade Count:31
CTE, linear, Transverse to Flow	48.0 - 80.0 µm/m-°C	26.7 - 44.4 µin/in-°F	Average value: 71.3 µm/m-°C Grade Count:8
Specific Heat Capacity	1.10 - 1.20 J/g-°C	0.263 - 0.287 BTU/lb-°F	Average value: 1.14 J/g-°C Grade Count:22
	1.30 - 2.30 J/g-°C @Temperature 60.0 - 280 °C	0.311 - 0.550 BTU/lb-°F @Temperature 140 - 536 °F	Average value: 1.69 J/g-°C Grade Count:23
Thermal Conductivity	0.190 - 0.290 W/m-K	1.32 - 2.01 BTU-in/hr-ft²-°F	Average value: 0.261 W/m-K Grade Count:8
Melting Point	200 - 255 °C	392 - 491 °F	Average value: 248 °C Grade Count:78
Maximum Service Temperature, Air	100 - 225 °C	212 - 437 °F	Average value: 159 °C Grade Count:21
Deflection Temperature at 0.46 MPa (66 psi)	66.0 - 245 °C	151 - 473 °F	Average value: 147 °C Grade Count:39
Deflection Temperature at 1.8 MPa (264 psi)	60.0 - 240 °C	140 - 464 °F	Average value: 124 °C Grade Count:46
Vicat Softening Point	74.0 - 85.0 °C	165 - 185 °F	Average value: 79.9 °C Grade Count:9
Minimum Service Temperature, Air	-20.0 °C	-4.00 °F	Average value: -20.0 °C Grade Count:4
Glass Transition Temp, Tg	70.0 - 78.0 °C	158 - 172 °F	Average value: 74.7 °C Grade Count:6
UL RTI, Electrical	75.0 - 130 °C	167 - 266 °F	Average value: 100 °C Grade Count:6
Flammability, UL94	HB - V-0	HB - V-0	Grade Count:38

Optical Properties	Metric	English	Comments
Haze	0.300 - 10.0 %	0.300 - 10.0 %	Average value: 1.86 % Grade Count:8
Gloss	108 - 166 %	108 - 166 %	Average value: 131 % Grade Count:6
Transmission, Visible	67.0 - 99.0 %	67.0 - 99.0 %	Average value: 88.7 % Grade Count:8
Gardner Color Number	-3.00 - 85.0	-3.00 - 85.0	Average value: 34.8 Grade Count:22

Processing Properties	Metric	English	Comments
Processing Temperature	120 - 295 °C	248 - 563 °F	Average value: 253 °C Grade Count:49
Mold Temperature	10.0 - 163 °C	50.0 - 325 °F	Average value: 85.7 °C Grade Count:21
Drying Temperature	70.0 - 160 °C	158 - 320 °F	Average value: 102 °C Grade Count:11
Dry Time	3.00 - 8.00 hour	3.00 - 8.00 hour	Average value: 5.36 hour Grade Count:11
Moisture Content	0.0100 - 0.400 %	0.0100 - 0.400 %	Average value: 0.269 % Grade Count:28
Injection Pressure	68.9 - 120 MPa	10000 - 17400 psi	Average value: 96.5 MPa Grade Count:4
Back Pressure	8.00 - 18.0 MPa	1160 - 2610 psi	Average value: 13.0 MPa Grade Count:3

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 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 MatWeb.

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