Overview of materials for Low Density Polyethylene (LDPE), Molded

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Overview of materials for Low Density Polyethylene (LDPE), Molded
Categories:	Polymer; Thermoplastic; Polyethylene (PE); Low Density (LDPE); Low Density Polyethylene (LDPE), Molded
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Low Density Polyethylene (LDPE), 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

Density	0.902 - 0.980 g/cc	0.0326 - 0.0354 lb/in³	Average value: 0.921 g/cc Grade Count:244
Water Absorption	0.0100 %	0.0100 %	Average value: 0.0100 % Grade Count:13
Moisture Absorption at Equilibrium	0.0100 - 0.100 %	0.0100 - 0.100 %	Average value: 0.0229 % Grade Count:14
Particle Size	5.00 - 50.0 µm	5.00 - 50.0 µm	Average value: 27.5 µm Grade Count:3
Water Vapor Transmission	18.6 - 26.4 g/m²/day	1.20 - 1.70 g/100 in²/day	Average value: 20.5 g/m²/day Grade Count:4
	15.5 - 15.5 g/m²/day @Temperature 37.8 - 37.8 °C	0.998 - 0.998 g/100 in²/day @Temperature 100 - 100 °F	Average value: 15.5 g/m²/day Grade Count:2
Oxygen Transmission	197 - 200 cc-mm/m²-24hr-atm	500 - 508 cc-mil/100 in²-24hr-atm	Average value: 199 cc-mm/m²-24hr-atm Grade Count:5
Viscosity	21000 - 305000 cP @Temperature 190 - 190 °C	21000 - 305000 cP @Temperature 374 - 374 °F	Average value: 91600 cP Grade Count:8
	21000 - 305000 cP @Shear Rate 300 - 5000 1/s	21000 - 305000 cP @Shear Rate 300 - 5000 1/s	Average value: 91600 cP Grade Count:8
Environmental Stress Crack Resistance	1.00 - 1500 hour	1.00 - 1500 hour	Average value: 290 hour Grade Count:7
	<= 1.00 hour @Temperature 50.0 - 50.0 °C	<= 1.00 hour @Temperature 122 - 122 °F	Average value: 1.00 hour Grade Count:2
	1.00 - 1.00 hour @Temperature 50.0 - 50.0 °C	1.00 - 1.00 hour @Temperature 122 - 122 °F	Average value: 1.00 hour Grade Count:1
	1.00 - 1.00 hour @Thickness 2.00 - 2.00 mm	1.00 - 1.00 hour @Thickness 0.0787 - 0.0787 in	Average value: 1.00 hour Grade Count:1
Maximum Moisture Content	0.100	0.100	Average value: 0.100 Grade Count:3
Thickness	5.00 - 300 microns	0.197 - 11.8 mil	Average value: 33.7 microns Grade Count:17
Linear Mold Shrinkage	0.0100 - 0.0500 cm/cm	0.0100 - 0.0500 in/in	Average value: 0.0225 cm/cm Grade Count:12
Melt Flow	0.150 - 2300 g/10 min	0.150 - 2300 g/10 min	Average value: 32.6 g/10 min Grade Count:222
Base Resin Melt Index	0.500 - 25.0 g/10 min	0.500 - 25.0 g/10 min	Average value: 6.32 g/10 min Grade Count:9

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	81.0 - 97.0	81.0 - 97.0	Average value: 90.8 Grade Count:18
Hardness, Shore D	38.0 - 68.0	38.0 - 68.0	Average value: 48.6 Grade Count:143
Tensile Strength, Ultimate	2.80 - 56.5 MPa	406 - 8200 psi	Average value: 10.8 MPa Grade Count:161
Film Tensile Strength at Yield, MD	9.00 - 30.0 MPa	1310 - 4350 psi	Average value: 17.9 MPa Grade Count:15
Film Tensile Strength at Yield, TD	9.00 - 14.1 MPa	1310 - 2050 psi	Average value: 11.1 MPa Grade Count:16
Tensile Strength, Yield	7.00 - 64.8 MPa	1020 - 9400 psi	Average value: 11.0 MPa Grade Count:167
Film Elongation at Break, MD	110 - 650 %	110 - 650 %	Average value: 308 % Grade Count:22
Film Elongation at Break, TD	380 - 930 %	380 - 930 %	Average value: 646 % Grade Count:21
Elongation at Break	13.5 - 800 %	13.5 - 800 %	Average value: 322 % Grade Count:182
Elongation at Yield	3.00 - 400 %	3.00 - 400 %	Average value: 28.9 % Grade Count:34
Modulus of Elasticity	0.0900 - 0.449 GPa	13.1 - 65.1 ksi	Average value: 0.219 GPa Grade Count:62
Flexural Yield Strength	9.03 - 170 MPa	1310 - 24700 psi	Average value: 74.6 MPa Grade Count:10
Flexural Modulus	0.0248 - 3.31 GPa	3.60 - 480 ksi	Average value: 0.264 GPa Grade Count:128
Secant Modulus	0.132 - 0.834 GPa	19.2 - 121 ksi	Average value: 0.280 GPa Grade Count:23
Secant Modulus, MD	0.138 - 0.234 GPa	20.0 - 33.9 ksi	Average value: 0.182 GPa Grade Count:12
Secant Modulus, TD	0.152 - 0.276 GPa	22.0 - 40.0 ksi	Average value: 0.218 GPa Grade Count:12
Izod Impact, Notched	0.343 - 5340 J/cm	0.643 - 10000 ft-lb/in	Average value: 1.92 J/cm Grade Count:13
	0.380 - 1.50 J/cm @Temperature -40.0 - -20.0 °C	0.712 - 2.81 ft-lb/in @Temperature -40.0 - -4.00 °F	Average value: 0.940 J/cm Grade Count:1
Izod Impact, Notched (ISO)	42.0 - 55.0 kJ/m²	20.0 - 26.2 ft-lb/in²	Average value: 46.8 kJ/m² Grade Count:4
	24.0 - 69.4 kJ/m² @Temperature -50.0 - -50.0 °C	11.4 - 33.0 ft-lb/in² @Temperature -58.0 - -58.0 °F	Average value: 40.5 kJ/m² Grade Count:10
Charpy Impact Unnotched	30.0 J/cm² - NB	143 ft-lb/in² - NB	Average value: 30.0 J/cm² Grade Count:3
	>= 30.0 J/cm² @Temperature -40.0 - -20.0 °C	>= 143 ft-lb/in² @Temperature -40.0 - -4.00 °F	Average value: 30.0 J/cm² Grade Count:1
Tensile Impact Strength	118 - 315 kJ/m²	56.0 - 150 ft-lb/in²	Average value: 223 kJ/m² Grade Count:6
Dart Drop, Total Energy	24.4048 - 24.4048 J @Temperature -20.0 - -20.0 °C	18.0000 - 18.0000 ft-lb @Temperature -4.00 - -4.00 °F	Average value: 24.4 J Grade Count:1
Instrumented Impact Total Energy	9.90 - 35.3 J	7.30 - 26.0 ft-lb	Average value: 21.3 J Grade Count:6
Puncture Energy	0.452 - 1.02 J	0.333 - 0.750 ft-lb	Average value: 0.678 J Grade Count:3
Coefficient of Friction	0.120 - 0.700	0.120 - 0.700	Average value: 0.417 Grade Count:4
Elmendorf Tear Strength MD	220 - 460 g	220 - 460 g	Average value: 286 g Grade Count:8
Elmendorf Tear Strength TD	55.0 - 570 g	55.0 - 570 g	Average value: 204 g Grade Count:9
Elmendorf Tear Strength, MD	8.00 - 18.2 g/micron	203 - 463 g/mil	Average value: 12.4 g/micron Grade Count:7
Elmendorf Tear Strength, TD	1.84 - 45.8 g/micron	46.7 - 1160 g/mil	Average value: 16.2 g/micron Grade Count:7
Dart Drop	2.36 - 30.0 g/micron	59.9 - 762 g/mil	Average value: 6.06 g/micron Grade Count:12
Dart Drop Test	55.0 - 210 g	0.121 - 0.463 lb	Average value: 107 g Grade Count:14
Film Tensile Strength at Break, MD	20.0 - 59.0 MPa	2900 - 8560 psi	Average value: 28.5 MPa Grade Count:20
Film Tensile Strength at Break, TD	13.4 - 45.0 MPa	1950 - 6530 psi	Average value: 21.2 MPa Grade Count:20
Torsional Stiffness	159 - 1030 MPa	23100 - 149000 psi	Average value: 709 MPa Grade Count:6
Heat Seal Strength Initiation Temperature	96.0 - 105 °C	205 - 221 °F	Average value: 101 °C Grade Count:3

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+15 - 1.00e+16 ohm-cm	1.00e+15 - 1.00e+16 ohm-cm	Average value: 1.69e+15 ohm-cm Grade Count:13
Surface Resistance	100 - 1.00e+14 ohm	100 - 1.00e+14 ohm	Average value: 9.17e+13 ohm Grade Count:13
Dielectric Constant	2.30 - 2.60	2.30 - 2.60	Average value: 2.33 Grade Count:12
Dissipation Factor	0.000200	0.000200	Average value: 0.000200 Grade Count:12
Comparative Tracking Index	600 V	600 V	Average value: 600 V Grade Count:12

Thermal Properties	Metric	English	Comments
CTE, linear	180 - 230 µm/m-°C	100 - 128 µin/in-°F	Average value: 218 µm/m-°C Grade Count:12
Melting Point	95.0 - 327 °C	203 - 621 °F	Average value: 113 °C Grade Count:105
Crystallization Temperature	95.6 - 104 °C	204 - 219 °F	Average value: 99.9 °C Grade Count:3
Deflection Temperature at 0.46 MPa (66 psi)	37.2 - 75.0 °C	99.0 - 167 °F	Average value: 47.0 °C Grade Count:21
Deflection Temperature at 1.8 MPa (264 psi)	38.0 - 101 °C	100 - 214 °F	Average value: 67.4 °C Grade Count:4
Vicat Softening Point	52.0 - 129 °C	126 - 264 °F	Average value: 89.7 °C Grade Count:195
Brittleness Temperature	-87.0 - 0.000 °C	-125 - 32.0 °F	Average value: -51.9 °C Grade Count:104
Flammability, UL94	HB	HB	Grade Count:14
Oxygen Index	17.0 %	17.0 %	Average value: 17.0 % Grade Count:11
Ring & Ball Softening Point	109 - 130 °C	228 - 266 °F	Average value: 118 °C Grade Count:4

Optical Properties	Metric	English	Comments
Haze	3.30 - 20.0 %	3.30 - 20.0 %	Average value: 9.31 % Grade Count:20
Gloss	8.50 - 91.0 %	8.50 - 91.0 %	Average value: 62.5 % Grade Count:21
Transmission, Visible	50.0 - 95.0 %	50.0 - 95.0 %	Average value: 76.3 % Grade Count:4

Processing Properties	Metric	English	Comments
Processing Temperature	82.2 - 260 °C	180 - 500 °F	Average value: 174 °C Grade Count:20
Nozzle Temperature	177 °C	350 °F	Average value: 177 °C Grade Count:3
Melt Temperature	105 - 332 °C	221 - 630 °F	Average value: 204 °C Grade Count:30
Mold Temperature	5.00 - 65.6 °C	41.0 - 150 °F	Average value: 26.2 °C Grade Count:18

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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