Overview of materials for High Density Polyethylene (HDPE), Sheet/Thermoforming Grade

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Overview of materials for High Density Polyethylene (HDPE), Sheet/Thermoforming Grade
Categories:	Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE); High Density Polyethylene (HDPE), Sheet/Thermoforming Grade
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "High Density Polyethylene (HDPE), Sheet/Thermoforming Grade". 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

Density	0.937 - 1.06 g/cc	0.0339 - 0.0383 lb/in³	Average value: 0.955 g/cc Grade Count:33
Environmental Stress Crack Resistance	30.0 - 10000 hour	30.0 - 10000 hour	Average value: 2520 hour Grade Count:14
Oxidative Induction Time (OIT)	20.0 - 120 min @Temperature 200 - 210 °C	20.0 - 120 min @Temperature 392 - 410 °F	Average value: 63.0 min Grade Count:10
Melt Flow	0.120 - 27.0 g/10 min	0.120 - 27.0 g/10 min	Average value: 4.79 g/10 min Grade Count:27

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	60.0 - 70.0	60.0 - 70.0	Average value: 65.0 Grade Count:4
Hardness, Shore D	63.0 - 67.0	63.0 - 67.0	Average value: 64.4 Grade Count:14
Tensile Strength, Ultimate	21.4 - 33.0 MPa	3100 - 4790 psi	Average value: 28.6 MPa Grade Count:9
Tensile Strength, Yield	17.9 - 31.0 MPa	2600 - 4500 psi	Average value: 25.3 MPa Grade Count:25
Elongation at Break	350 - 1500 %	350 - 1500 %	Average value: 819 % Grade Count:23
Elongation at Yield	8.00 - 12.0 %	8.00 - 12.0 %	Average value: 10.1 % Grade Count:7
Modulus of Elasticity	0.655 - 1.10 GPa	95.0 - 160 ksi	Average value: 0.977 GPa Grade Count:5
Flexural Yield Strength	22.8 - 37.9 MPa	3310 - 5500 psi	Average value: 29.8 MPa Grade Count:5
Flexural Modulus	0.330 - 1.57 GPa	47.9 - 228 ksi	Average value: 1.07 GPa Grade Count:29
Izod Impact, Notched	5.30 - 7.50 J/cm	9.93 - 14.1 ft-lb/in	Average value: 6.57 J/cm Grade Count:3
	4.30 - 5.30 J/cm @Temperature -29.0 - -29.0 °C	8.06 - 9.93 ft-lb/in @Temperature -20.2 - -20.2 °F	Average value: 4.63 J/cm Grade Count:3
Izod Impact, Notched (ISO)	9.00 - 16.0 kJ/m²	4.28 - 7.61 ft-lb/in²	Average value: 14.2 kJ/m² Grade Count:5
Charpy Impact, Notched	2.60 J/cm²	12.4 ft-lb/in²	Average value: 2.60 J/cm² Grade Count:3
	1.30 - 1.30 J/cm² @Temperature -30.0 - -30.0 °C	6.19 - 6.19 ft-lb/in² @Temperature -22.0 - -22.0 °F	Average value: 1.30 J/cm² Grade Count:3
Gardner Impact	34.0 - 36.0 J	25.1 - 26.6 ft-lb	Average value: 34.5 J Grade Count:4
Tensile Impact Strength	158 - 505 kJ/m²	75.2 - 240 ft-lb/in²	Average value: 324 kJ/m² Grade Count:4
Tensile Impact	68.3 - 131 J/cm	128 - 245 ft-lb/in	Average value: 110 J/cm Grade Count:3
Falling Dart Impact	271.164 - 271.164 J @Temperature -40.0 - -40.0 °C	200.000 - 200.000 ft-lb @Temperature -40.0 - -40.0 °F	Average value: 271 J Grade Count:1

Thermal Properties	Metric	English	Comments
CTE, linear	108 - 120 µm/m-°C	60.0 - 66.7 µin/in-°F	Average value: 116 µm/m-°C Grade Count:3
Deflection Temperature at 0.46 MPa (66 psi)	57.0 - 92.0 °C	135 - 198 °F	Average value: 74.1 °C Grade Count:12
Vicat Softening Point	74.0 - 134 °C	165 - 273 °F	Average value: 115 °C Grade Count:14
Brittleness Temperature	-118 - -75.0 °C	-180 - -103 °F	Average value: -82.3 °C Grade Count:10
DSC Induction Temperature	129 °C	264 °F	Average value: 129 °C Grade Count:3

Processing Properties	Metric	English	Comments
Processing Temperature	149 - 260 °C	300 - 500 °F	Average value: 202 °C Grade Count:6

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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