Overview of materials for High Density Polyethylene (HDPE), Injection Molded

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Categories:

Polymer; Thermoplastic; Polyethylene; HDPE; High Density Polyethylene (HDPE), Injection Molded

Material Notes:

This property data is a summary of similar materials in the MatWeb database for the category "High Density Polyethylene (HDPE), Injection Molded". 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	0.529 - 0.625 g/cc	0.0191 - 0.0226 lb/in³	Average value: 0.603 g/cc Grade Count:14
Density	0.918 - 1.05 g/cc	0.0332 - 0.0379 lb/in³	Average value: 0.954 g/cc Grade Count:335
Apparent Bulk Density	0.526 - 0.610 g/cc	0.0190 - 0.0220 lb/in³	Average value: 0.591 g/cc Grade Count:18
Water Absorption	0.000 - 0.0500 %	0.000 - 0.0500 %	Average value: 0.0152 % Grade Count:29
Moisture Absorption at Equilibrium	0.0100 - 0.0500 %	0.0100 - 0.0500 %	Average value: 0.0136 % Grade Count:11
Water Absorption at Saturation	0.0100 %	0.0100 %	Average value: 0.0100 % Grade Count:3
Particle Size	5.00 - 1200 µm	5.00 - 1200 µm	Average value: 614 µm Grade Count:4
Viscosity	32000 - 200000 cP @Temperature 190 - 190 °C	32000 - 200000 cP @Temperature 374 - 374 °F	Average value: 89000 cP Grade Count:7
	32000 - 200000 cP @Shear Rate 300 - 5000 1/s	32000 - 200000 cP @Shear Rate 300 - 5000 1/s	Average value: 89000 cP Grade Count:7
Viscosity Measurement	280 - 460	280 - 460	Average value: 350 Grade Count:5
Environmental Stress Crack Resistance	1.00 - 3000 hour	1.00 - 3000 hour	Average value: 256 hour Grade Count:85
	2.00 - 10.0 hour @Temperature 50.0 - 50.0 °C	2.00 - 10.0 hour @Temperature 122 - 122 °F	Average value: 3.53 hour Grade Count:12
	2.00 - 10.0 hour @Thickness 1.90 - 2.00 mm	2.00 - 10.0 hour @Thickness 0.0748 - 0.0787 in	Average value: 3.53 hour Grade Count:12
Oxidative Induction Time (OIT)	20.0 - 100 min	20.0 - 100 min	Average value: 47.5 min Grade Count:4
Linear Mold Shrinkage	0.0140 - 0.0260 cm/cm	0.0140 - 0.0260 in/in	Average value: 0.0188 cm/cm Grade Count:9
Melt Flow	0.0250 - 1610 g/10 min	0.0250 - 1610 g/10 min	Average value: 31.3 g/10 min Grade Count:312
Base Resin Melt Index	2.00 - 20.0 g/10 min	2.00 - 20.0 g/10 min	Average value: 7.00 g/10 min Grade Count:8
Spiral Flow	15.5 - 53.8 cm	6.10 - 21.2 in	Average value: 33.1 cm Grade Count:41
Collected Volatile Condensable Material	0.0500 - 1.00 %	0.0500 - 1.00 %	Average value: 0.472 % Grade Count:23

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	33.0 - 52.0	33.0 - 52.0	Average value: 46.3 Grade Count:4
Hardness, Shore D	55.0 - 76.0	55.0 - 76.0	Average value: 64.6 Grade Count:160
Ball Indentation Hardness	35.0 - 45.0 MPa	5080 - 6530 psi	Average value: 41.4 MPa Grade Count:9
Tensile Strength, Ultimate	10.0 - 43.0 MPa	1450 - 6240 psi	Average value: 22.4 MPa Grade Count:109
Film Tensile Strength at Yield, MD	21.0 - 35.0 MPa	3050 - 5080 psi	Average value: 28.9 MPa Grade Count:5
Film Tensile Strength at Yield, TD	23.0 - 37.5 MPa	3340 - 5440 psi	Average value: 31.1 MPa Grade Count:5
Film Elongation at Break, MD	595 - 900 %	595 - 900 %	Average value: 709 % Grade Count:5
Film Elongation at Break, TD	650 - 950 %	650 - 950 %	Average value: 860 % Grade Count:5
Tensile Strength, Yield	9.00 - 43.0 MPa	1310 - 6240 psi	Average value: 26.0 MPa Grade Count:275
Elongation at Break	3.20 - 2080 %	3.20 - 2080 %	Average value: 508 % Grade Count:242
Elongation at Yield	6.60 - 44.0 %	6.60 - 44.0 %	Average value: 10.3 % Grade Count:67
Modulus of Elasticity	0.180 - 1.57 GPa	26.1 - 228 ksi	Average value: 0.934 GPa Grade Count:53
Flexural Modulus	0.186 - 1.81 GPa	27.0 - 263 ksi	Average value: 1.07 GPa Grade Count:238
Flexural Yield Strength	13.8 - 40.7 MPa	2000 - 5900 psi	Average value: 26.9 MPa Grade Count:12
Compressive Yield Strength	4.00 - 31.7 MPa	580 - 4600 psi	Average value: 14.9 MPa Grade Count:11
Compressive Modulus	0.689 GPa	100 ksi	Average value: 0.689 GPa Grade Count:3
Secant Modulus	0.758 - 1.54 GPa	110 - 224 ksi	Average value: 1.10 GPa Grade Count:22
Izod Impact, Unnotched	2.45 - 5340 J/cm	4.59 - 10000 ft-lb/in	Average value: 2.45 J/cm Grade Count:3
Charpy Impact Unnotched	1.60 J/cm² - NB	7.61 ft-lb/in² - NB	Average value: 1.60 J/cm² Grade Count:12
Charpy Impact, Notched	0.200 - 11.0 J/cm²	0.952 - 52.4 ft-lb/in²	Average value: 2.79 J/cm² Grade Count:33
	0.280 - 0.440 J/cm² @Temperature -30.0 - -30.0 °C	1.33 - 2.09 ft-lb/in² @Temperature -22.0 - -22.0 °F	Average value: 0.382 J/cm² Grade Count:4
Tensile Impact Strength	34.0 - 349 kJ/m²	16.2 - 166 ft-lb/in²	Average value: 226 kJ/m² Grade Count:22
Falling Dart Impact	31.2 - 176 J	23.0 - 130 ft-lb	Average value: 125 J Grade Count:3
Coefficient of Friction	0.200 - 0.300	0.200 - 0.300	Average value: 0.225 Grade Count:4
Tensile Creep Modulus, 1 hour	400 - 570 MPa	58000 - 82700 psi	Average value: 473 MPa Grade Count:3
Tensile Creep Modulus, 1000 hours	270 - 400 MPa	39200 - 58000 psi	Average value: 327 MPa Grade Count:3
Elmendorf Tear Strength, MD	0.600 - 1.60 g/micron	15.2 - 40.6 g/mil	Average value: 0.940 g/micron Grade Count:5
Elmendorf Tear Strength, TD	1.70 - 23.0 g/micron	43.2 - 584 g/mil	Average value: 10.5 g/micron Grade Count:5
Dart Drop	1.50 - 2.00 g/micron	38.1 - 50.8 g/mil	Average value: 1.67 g/micron Grade Count:4
Abrasion	85.0 - 350	85.0 - 350	Average value: 215 Grade Count:7
Film Tensile Strength at Break, MD	35.6 - 55.0 MPa	5160 - 7980 psi	Average value: 47.1 MPa Grade Count:5
Film Tensile Strength at Break, TD	28.0 - 50.0 MPa	4060 - 7250 psi	Average value: 42.2 MPa Grade Count:5
Tangent Modulus	1170 - 1280 MPa	170000 - 185000 psi	Average value: 1230 MPa Grade Count:5
Izod Impact, Notched	0.196 - 5340 J/cm	0.367 - 10000 ft-lb/in	Average value: 0.762 J/cm Grade Count:119
Izod Impact, Notched, Low Temp	2.56 - 5340 J/cm	4.80 - 10000 ft-lb/in	Average value: 3.52 J/cm Grade Count:13
Izod Impact, Notched (ISO)	11.0 - 80.1 kJ/m²	5.23 - 38.1 ft-lb/in²	Average value: 38.4 kJ/m² Grade Count:11

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+6 - 1.00e+17 ohm-cm	1.00e+6 - 1.00e+17 ohm-cm	Average value: 8.98e+15 ohm-cm Grade Count:25
Surface Resistance	100 - 1.00e+15 ohm	100 - 1.00e+15 ohm	Average value: 4.45e+14 ohm Grade Count:26
Dielectric Constant	1.00 - 5.00	1.00 - 5.00	Average value: 2.60 Grade Count:27
Dielectric Strength	18.7 - 150 kV/mm	475 - 3810 kV/in	Average value: 49.2 kV/mm Grade Count:26
Dissipation Factor	0.0000400 - 0.00100	0.0000400 - 0.00100	Average value: 0.000302 Grade Count:26
Comparative Tracking Index	600 V	600 V	Average value: 600 V Grade Count:19

Thermal Properties	Metric	English	Comments
CTE, linear	20.0 - 225 µm/m-°C	11.1 - 125 µin/in-°F	Average value: 139 µm/m-°C Grade Count:33
Thermal Conductivity	0.288 - 0.400 W/m-K	2.00 - 2.78 BTU-in/hr-ft²-°F	Average value: 0.386 W/m-K Grade Count:8
Melting Point	110 - 136 °C	230 - 277 °F	Average value: 130 °C Grade Count:66
Crystallization Temperature	112 - 117 °C	234 - 243 °F	Average value: 115 °C Grade Count:26
Maximum Service Temperature, Air	70.0 - 120 °C	158 - 248 °F	Average value: 94.7 °C Grade Count:13
Deflection Temperature at 0.46 MPa (66 psi)	47.2 - 87.8 °C	117 - 190 °F	Average value: 72.0 °C Grade Count:94
Deflection Temperature at 1.8 MPa (264 psi)	37.6 - 80.0 °C	99.7 - 176 °F	Average value: 47.0 °C Grade Count:42
Vicat Softening Point	67.0 - 194 °C	153 - 381 °F	Average value: 121 °C Grade Count:191
Minimum Service Temperature, Air	-200 - -60.0 °C	-328 - -76.0 °F	Average value: -137 °C Grade Count:7
Brittleness Temperature	-180 - -51.1 °C	-292 - -60.0 °F	Average value: -77.5 °C Grade Count:113
Flammability, UL94	HB	HB	Grade Count:34
Oxygen Index	17.0 - 20.0 %	17.0 - 20.0 %	Average value: 18.9 % Grade Count:12

Optical Properties	Metric	English	Comments
Yellow Index	4.00 - 5.00 %	4.00 - 5.00 %	Average value: 4.06 % Grade Count:17

Processing Properties	Metric	English	Comments
Processing Temperature	82.2 - 280 °C	180 - 536 °F	Average value: 204 °C Grade Count:36
Rear Barrel Temperature	149 - 232 °C	300 - 450 °F	Average value: 223 °C Grade Count:17
Middle Barrel Temperature	154 - 243 °C	310 - 470 °F	Average value: 233 °C Grade Count:17
Front Barrel Temperature	160 - 246 °C	320 - 475 °F	Average value: 236 °C Grade Count:17
Nozzle Temperature	160 - 246 °C	320 - 475 °F	Average value: 237 °C Grade Count:17
Mold Temperature	15.6 - 65.6 °C	60.0 - 150 °F	Average value: 30.1 °C Grade Count:5
Drying Temperature	37.8 - 80.0 °C	100 - 176 °F	Average value: 53.9 °C Grade Count:3
Dry Time	1.00 - 3.00 hour	1.00 - 3.00 hour	Average value: 2.00 hour Grade Count:3
Injection Pressure	2.76 - 103 MPa	400 - 15000 psi	Average value: 33.1 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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