Overview of materials for High Density Polyethylene (HDPE), Pipe Grade

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

Density	0.913 - 1.00 g/cc	Average value: 0.952 g/cc Grade Count:211
Water Absorption	0.0100 %	Average value: 0.0100 % Grade Count:15
Viscosity	270000 - 2.10e+6 cP @Temperature 190 - 190 °C	Average value: 1.26e+6 cP Grade Count:7
	270000 - 2.10e+6 cP @Shear Rate 100 - 1000 1/s	Average value: 1.26e+6 cP Grade Count:7
Environmental Stress Crack Resistance	10.0 - 10000 hour	Average value: 3090 hour Grade Count:58
	15.5 - 15.5 hour @Temperature 50.0 - 100 °C	Average value: 1290 hour Grade Count:18
	>= 5.00 hour @Temperature 80.0 - 80.0 °C	Average value: 1290 hour Grade Count:2
	>= 5.00 hour @Pressure 0.920 - 0.920 MPa	Average value: 1290 hour Grade Count:2
	530 - 530 hour @Temperature 50.0 - 100 °C	Average value: 1290 hour Grade Count:8
	530 - 530 hour @Thickness 1.90 - 2.00 mm	Average value: 1290 hour Grade Count:8
Oxidative Induction Time (OIT)	10.0 - 45.0 min	Average value: 23.5 min Grade Count:29
	20.0 - 120 min @Temperature 200 - 220 °C	Average value: 46.2 min Grade Count:42
Thickness	6350 - 119000 microns	Average value: 44900 microns Grade Count:14
Melt Flow	0.0290 - 47.0 g/10 min	Average value: 4.52 g/10 min Grade Count:205
Base Resin Melt Index	0.400 - 0.400 g/10 min @Temperature 190 - 190 °C	Average value: 0.400 g/10 min Grade Count:1
	0.400 - 0.400 g/10 min @Load 5.00 - 5.00 kg	Average value: 0.400 g/10 min Grade Count:1
Ash	1.00 - 2.02 %	Average value: 1.55 % Grade Count:3

Mechanical Properties	Original Value	Comments
Hardness, Shore D	54.0 - 71.0	Average value: 63.6 Grade Count:116
Ball Indentation Hardness	40.0 - 55.0 MPa	Average value: 49.6 MPa Grade Count:7
Tensile Strength, Ultimate	18.0 - 40.7 MPa	Average value: 32.4 MPa Grade Count:76
Tensile Strength, Yield	16.5 - 31.7 MPa	Average value: 23.7 MPa Grade Count:180
Elongation at Break	195 - 1550 %	Average value: 699 % Grade Count:165
Elongation at Yield	7.00 - 600 %	Average value: 19.9 % Grade Count:57
Modulus of Elasticity	0.700 - 1.34 GPa	Average value: 1.07 GPa Grade Count:44
Flexural Modulus	0.300 - 1.65 GPa	Average value: 0.961 GPa Grade Count:132
Secant Modulus	0.500 - 1.34 GPa	Average value: 0.974 GPa Grade Count:18
Izod Impact, Notched	0.785 - 9.19 J/cm	Average value: 4.16 J/cm Grade Count:57
	0.490332 - 3.43233 J/cm @Temperature -20.0 - 0.000 °C	Average value: 1.91 J/cm Grade Count:9
Izod Impact, Unnotched	1.10 - 1.10 J/cm @Temperature 220 - 220 °C	Average value: 1.10 J/cm Grade Count:1
Izod Impact, Notched (ISO)	0.490 - 24.0 kJ/m²	Average value: 15.9 kJ/m² Grade Count:17
Charpy Impact, Notched	0.500 - 1000 J/cm²	Average value: 2.05 J/cm² Grade Count:16
	0.300 - 1.60 J/cm² @Temperature -30.0 - 0.000 °C	Average value: 1.15 J/cm² Grade Count:10
Coefficient of Friction	0.200	Average value: 0.200 Grade Count:14
Coefficient of Friction, Static	0.200	Average value: 0.200 Grade Count:14
Tensile Creep Modulus, 1 hour	640 - 850 MPa	Average value: 783 MPa Grade Count:7
Tensile Creep Modulus, 1000 hours	300 - 360 MPa	Average value: 344 MPa Grade Count:8
Hydrostatic Design Basis	5.50 - 11.0 MPa	Average value: 10.4 MPa Grade Count:33
	6.89476 - 6.90 MPa @Temperature 60.0 - 60.0 °C	Average value: 6.90 MPa Grade Count:21

Electrical Properties	Original Value	Comments
Electrical Resistivity	1e+05 - 1.00e+17 ohm-cm	Average value: 2.80e+16 ohm-cm Grade Count:6
Surface Resistance	10000 - 1.00e+16 ohm	Average value: 8.00e+15 ohm Grade Count:5
Dielectric Constant	2.35 - 2.45	Average value: 2.38 Grade Count:5
Dielectric Strength	16.0 - 18.0 kV/mm	Average value: 16.6 kV/mm Grade Count:5
Dissipation Factor	0.000200 - 0.0200	Average value: 0.00683 Grade Count:4

Thermal Properties	Original Value	Comments
CTE, linear	120 - 216 µm/m-°C	Average value: 173 µm/m-°C Grade Count:32
	90.0 - 500 µm/m-°C @Temperature -20.0 - 100 °C	Average value: 295 µm/m-°C Grade Count:1
Specific Heat Capacity	2.00 - 2.10 J/g-°C	Average value: 2.01 J/g-°C Grade Count:9
	2.60 - 2.60 J/g-°C @Temperature 150 - 150 °C	Average value: 2.60 J/g-°C Grade Count:8
Thermal Conductivity	0.400 W/m-K	Average value: 0.400 W/m-K Grade Count:7
	0.200 - 0.200 W/m-K @Temperature 150 - 150 °C	Average value: 0.200 W/m-K Grade Count:8
Melting Point	53.9 - 138 °C	Average value: 126 °C Grade Count:52
Maximum Service Temperature, Air	72.8 - 264 °C	Average value: 120 °C Grade Count:21
Deflection Temperature at 0.46 MPa (66 psi)	57.0 - 99.0 °C	Average value: 73.1 °C Grade Count:33
Deflection Temperature at 1.8 MPa (264 psi)	47.8 °C	Average value: 47.8 °C Grade Count:14
Vicat Softening Point	67.0 - 132 °C	Average value: 116 °C Grade Count:90
Brittleness Temperature	-118 - -59.0 °C	Average value: -80.8 °C Grade Count:72
DSC Induction Temperature	129 - 250 °C	Average value: 162 °C Grade Count:11

Processing Properties	Original Value	Comments
Processing Temperature	190 - 210 °C	Average value: 200 °C Grade Count:5
Die Temperature	200 - 210 °C	Average value: 205 °C Grade Count:7
Melt Temperature	136 - 260 °C	Average value: 205 °C Grade Count:17
Head Temperature	200 - 210 °C	Average value: 205 °C Grade Count:6

Component Elements Properties	Original Value	Comments
Carbon, C	2.00 - 2.50 %	Average value: 2.30 % 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 terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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