MatWeb, The Online Materials Database

Overview - High Density Polyethylene (HDPE), Injection Molded


Subcategory: Film; HDPE; Polyethylene; Polymer; Thermoplastic

Close Analogs:
Click button for specific proprietary grades that belong to this Overview class.

Please be aware that some proprietary polymers may not be listed because they fall into more than one class or because of ambiguity in manufacturer's information.

Key Words: Plastics, Polymers

The property data has been taken from proprietary materials in the MatWeb database. Each property value reported is the average of appropriate MatWeb entries and the comments report the maximum, minimum, and number of data points used to calculate the value. 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.

Physical PropertiesMetricEnglishComments
Density0.918 - 1.4 g/cc0.0332 - 0.0506 lb/in³ Average = 0.956 g/cc; Grade Count = 103
Apparent Bulk Density0.526 - 0.61 g/cc0.019 - 0.022 lb/in³ Average = 0.59 g/cc; Grade Count=14
Water Absorption0.01 - 1.5 %0.01 - 1.5 % Average = 0.076%; Grade Count = 27
Moisture Absorption at Equilibrium0.01 - 0.05 %0.01 - 0.05 % Average = 0.014%; Grade Count = 11
Environmental Stress Crack Resistance3 - 3000 hour3 - 3000 hour Average = 320 hr; Grade Count = 13
Linear Mold Shrinkage0.003 - 0.02 cm/cm0.003 - 0.02 in/in Average = 0.016 cm/cm; Grade Count = 7
Linear Mold Shrinkage, Transverse0.013 cm/cm0.013 in/in Grade Count = 1
Melt Flow0.1 - 90 g/10 min0.1 - 90 g/10 min Average = 21.6 g/10 min; Grade Count = 90
Spiral Flow15.5 - 53.8 cm6.1 - 21.2 in Average = 31.9 cm; Grade Count = 26

Mechanical Properties
Hardness, Rockwell R60 - 6560 - 65 Average = 63.3; Grade Count = 3
Hardness, Shore D55 - 6955 - 69 Average = 64.5; Grade Count = 58
Tensile Strength, Ultimate10 - 50 MPa1450 - 7250 psi Average = 20.3 MPa; Grade Count = 37
Tensile Strength, Yield2.4 - 31.7 MPa348 - 4600 psi Average = 25.2 MPa; Grade Count = 96
Elongation at Break10 - 1500 %10 - 1500 % Average = 380%; Grade Count = 73
Elongation at Yield6.9 - 15 %6.9 - 15 % Average = 9.5%; Grade Count = 39
Tensile Modulus0.18 - 1.6 GPa26.1 - 232 ksi Average = 0.911 GPa; Grade Count = 34
Flexural Modulus0.179 - 1.7 GPa26 - 247 ksi Average = 1.1 GPa; Grade Count = 78
Flexural Yield Strength14 - 25 MPa2030 - 3630 psi Average = 20 MPa; Grade Count = 3
Compressive Yield Strength4 - 25 MPa580 - 3630 psi Average = 10.2 MPa; Grade Count=12
Secant Modulus0.57 GPa82.7 ksi Grade Count = 1
Izod Impact, Notched0.21 - 8.01 J/cm0.393 - 15 ft-lb/in Average = 1.9 J/cm; Grade Count = 28
Izod Impact, Unnotched2.7 - NB5.06 - NB Average = 14.2 J/cm (NB computed as 20 J/cm); Grade Count = 3
Charpy Impact UnnotchedNBNB Grade Count = 13
Charpy Impact, Notched, Low Temp0.28 - 0.44 J/cm²1.33 - 2.09 ft-lb/in² Average = 0.38 J/cm²; Grade Count = 4
Charpy Impact, Unnotched Low TempNBNB Grade Count = 4
Charpy Impact, Notched0.38 - 11 J/cm²1.81 - 52.4 ft-lb/in² Average = 6.8 J/cm²; Grade Count = 13
Tensile Impact Strength34 - 330 kJ/m²16.2 - 157 ft-lb/in² Average = 140 kJ/m²; Grade Count = 5
Tensile Creep Modulus, 1 hour400 - 570 MPa58000 - 82700 psi Average = 470 MPa; Grade Count = 3
Tensile Creep Modulus, 1000 hours270 - 400 MPa39200 - 58000 psi Average = 330 MPa; Grade Count = 3
Dart Drop Test1.6 g0.00353 lb Grade Count=1

Electrical Properties
Electrical Resistivity1e+006 - 1e+016 ohm-cm1e+006 - 1e+016 ohm-cm Average = 1.4E+15 ohm-cm; Grade Count = 25
Surface Resistance1e+006 - 1e+015 ohm1e+006 - 1e+015 ohm Average = 4E+14 ohm; Grade Count = 21
Dielectric Constant1 - 31 - 3 Average = 2; Grade Count = 25
Dielectric Constant, Low Frequency2 - 52 - 5 Average = 3.4; Grade Count = 20
Dielectric Strength19 - 150 kV/mm483 - 3810 kV/in Average = 47.9 kV/mm; Grade Count = 25
Dissipation Factor0.0001 - 0.010.0001 - 0.01 Average = 0.00069; Grade Count = 27
Dissipation Factor, Low Frequency0.0002 - 0.00050.0002 - 0.0005 Average = 0.00026; Grade Count = 20
Arc Resistance100 - 180 sec100 - 180 sec Average = 140 sec; Grade Count=2
Comparative Tracking Index600 V600 V Grade Count=19

Thermal Properties
CTE, linear 20°C22 - 200 µm/m-°C12.2 - 111 µin/in-°F Average = 150 µm/m-°C; Grade Count=23
Specific Heat Capacity2.2 J/g-°C0.526 BTU/lb-°F Grade Count = 1
Thermal Conductivity0.29 - 0.5 W/m-K2.01 - 3.47 BTU-in/hr-ft²-°F Average = 0.39 W/m-K; Grade Count = 12
Melting Point110 - 135 °C230 - 275 °F Average = 130°C; Grade Count = 23
Maximum Service Temperature, Air41 - 120 °C106 - 248 °F Average = 84.3°C; Grade Count = 31
Deflection Temperature at 0.46 MPa (66 psi)60 - 104 °C140 - 219 °F Average = 74.9°C; Grade Count=41
Deflection Temperature at 1.8 MPa (264 psi)41 - 93 °C106 - 199 °F Average = 47°C; Grade Count=22
Vicat Softening Point67 - 131 °C153 - 268 °F Average = 110°C; Grade Count = 84
Minimum Service Temperature, Air-200 - -60 °C-328 - -76 °F Average = -140°C; Grade Count = 9
Brittleness Temperature-118 - -68 °C-180 - -90.4 °F Average = -75.4°C; Grade Count=38
Flammability, UL94HB - V-0HB - V-0 Grade Count = 25, HB is typical
Oxygen Index17 - 20 %17 - 20 % Average = 19.1%; Grade Count = 14

Optical Properties
Haze6 %6 % Grade Count = 1
Gloss85 %85 % Grade Count = 1
Transmission, Visible80 %80 % Grade Count = 2

Processing Properties
Processing Temperature190 - 274 °C374 - 525 °F Average = 210°C; Grade Count = 25
Rear Barrel Temperature210 °C410 °F Grade Count = 2
Middle Barrel Temperature210 °C410 °F Grade Count = 2
Front Barrel Temperature210 °C410 °F Grade Count = 2
Nozzle Temperature210 °C410 °F Grade Count = 2
Mold Temperature33 °C91.4 °F Grade Count = 2
Drying Temperature77 °C171 °F Grade Count = 2

 


Copyright 1996-2010 by Automation Creations, Inc.  The information provided by MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from Automation Creations, Inc. No warranty, neither expressed nor implied, is given regarding the accuracy of this information. The user assumes all risk and liability in connection with the use of information from MatWeb.