Overview of materials for Low Density Polyethylene (LDPE), Extrusion Grade

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Overview of materials for Low Density Polyethylene (LDPE), Extrusion Grade
Categories:	Polymer; Thermoplastic; Polyethylene (PE); Low Density (LDPE); Low Density Polyethylene (LDPE), Extrusion Grade
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Low Density Polyethylene (LDPE), Extrusion 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	0.915 - 0.960 g/cc	0.0331 - 0.0347 lb/in³	Average value: 0.921 g/cc Grade Count:134
Moisture Vapor Transmission	0.410 - 0.410 cc-mm/m²-24hr-atm @Temperature 37.8 - 37.8 °C	1.04 - 1.04 cc-mil/100 in²-24hr-atm @Temperature 100 - 100 °F	Average value: 0.410 cc-mm/m²-24hr-atm Grade Count:1
	0.410 - 0.410 cc-mm/m²-24hr-atm @Thickness 0.0254 - 0.0254 mm	1.04 - 1.04 cc-mil/100 in²-24hr-atm @Thickness 0.00100 - 0.00100 in	Average value: 0.410 cc-mm/m²-24hr-atm Grade Count:1
Water Vapor Transmission	0.260 - 27.9 g/m²/day	0.0167 - 1.80 g/100 in²/day	Average value: 14.2 g/m²/day Grade Count:12
	17.0 - 18.0 g/m²/day @Temperature 37.8 - 38.0 °C	1.09 - 1.16 g/100 in²/day @Temperature 100 - 100 °F	Average value: 17.9 g/m²/day Grade Count:4
	18.0 - 18.5 g/m²/day @Temperature 37.8 - 37.8 °C	1.16 - 1.19 g/100 in²/day @Temperature 100 - 100 °F	Average value: 17.9 g/m²/day Grade Count:2
	18.0 - 18.5 g/m²/day @Thickness 0.0250 - 0.0250 mm	1.16 - 1.19 g/100 in²/day @Thickness 0.000984 - 0.000984 in	Average value: 17.9 g/m²/day Grade Count:2
Oxygen Transmission Rate	6670 - 7600 cc/m²/day	430 - 490 cc/100 in²/day	Average value: 7290 cc/m²/day Grade Count:4
Environmental Stress Crack Resistance	18.0 - 10000 hour	18.0 - 10000 hour	Average value: 2550 hour Grade Count:4
Oxidative Induction Time (OIT)	>= 40.0 min @Temperature 200 - 200 °C	>= 40.0 min @Temperature 392 - 392 °F	Average value: 40.0 min Grade Count:1
Thickness	25.0 - 150 microns	0.984 - 5.91 mil	Average value: 54.3 microns Grade Count:24
Melt Flow	0.160 - 55.0 g/10 min	0.160 - 55.0 g/10 min	Average value: 5.48 g/10 min Grade Count:120
Base Resin Melt Index	0.330 - 7.00 g/10 min	0.330 - 7.00 g/10 min	Average value: 2.98 g/10 min Grade Count:14

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	42.0 - 56.0	42.0 - 56.0	Average value: 48.4 Grade Count:28
Tensile Strength, Ultimate	8.96 - 54.0 MPa	1300 - 7830 psi	Average value: 12.6 MPa Grade Count:42
Film Tensile Strength at Yield, MD	10.0 - 15.2 MPa	1450 - 2200 psi	Average value: 12.3 MPa Grade Count:15
Film Tensile Strength at Yield, TD	9.00 - 15.2 MPa	1310 - 2200 psi	Average value: 11.4 MPa Grade Count:15
Tensile Strength, Yield	7.60 - 14.0 MPa	1100 - 2030 psi	Average value: 10.1 MPa Grade Count:25
Film Elongation at Break, MD	150 - 580 %	150 - 580 %	Average value: 321 % Grade Count:60
Film Elongation at Break, TD	220 - 1110 %	220 - 1110 %	Average value: 621 % Grade Count:60
Elongation at Break	164 - 920 %	164 - 920 %	Average value: 518 % Grade Count:43
Modulus of Elasticity	0.152 - 0.290 GPa	22.0 - 42.1 ksi	Average value: 0.207 GPa Grade Count:11
Flexural Modulus	0.0700 - 0.448 GPa	10.2 - 65.0 ksi	Average value: 0.199 GPa Grade Count:27
Secant Modulus	0.166 - 0.372 GPa	24.1 - 54.0 ksi	Average value: 0.238 GPa Grade Count:11
Secant Modulus, MD	0.0830 - 1.28 GPa	12.0 - 185 ksi	Average value: 0.216 GPa Grade Count:24
Secant Modulus, TD	0.124 - 1.18 GPa	18.0 - 171 ksi	Average value: 0.239 GPa Grade Count:24
Coefficient of Friction	0.450 - 0.600	0.450 - 0.600	Average value: 0.550 Grade Count:3
Elmendorf Tear Strength MD	100 - 600 g	100 - 600 g	Average value: 348 g Grade Count:31
Elmendorf Tear Strength TD	55.0 - 500 g	55.0 - 500 g	Average value: 217 g Grade Count:41
Elmendorf Tear Strength, MD	2.50 - 12.0 g/micron	63.5 - 305 g/mil	Average value: 8.19 g/micron Grade Count:21
Elmendorf Tear Strength, TD	2.20 - 7.00 g/micron	55.9 - 178 g/mil	Average value: 4.71 g/micron Grade Count:22
Dart Drop	2.00 - 11.0 g/micron	50.8 - 279 g/mil	Average value: 3.48 g/micron Grade Count:24
Dart Drop Test	25.0 - 650 g	0.0551 - 1.43 lb	Average value: 142 g Grade Count:42
Hot Tack Strength	225 g/25 mm	225 g/in	Average value: 225 g/25 mm Grade Count:3
	225 - 225 g/25 mm @Temperature 38.0 - 38.0 °C	225 - 225 g/in @Temperature 100 - 100 °F	Average value: 225 g/25 mm Grade Count:1
Film Tensile Strength at Break, MD	11.0 - 78.5 MPa	1600 - 11400 psi	Average value: 25.4 MPa Grade Count:60
Film Tensile Strength at Break, TD	10.0 - 53.9 MPa	1450 - 7820 psi	Average value: 19.7 MPa Grade Count:60
Heat Seal Strength	1400 g/25 mm	3.09 lb/in	Average value: 1400 g/25 mm Grade Count:3
	1400 - 1400 g/25 mm @Temperature 38.0 - 38.0 °C	3.09 - 3.09 lb/in @Temperature 100 - 100 °F	Average value: 1400 g/25 mm Grade Count:1
Heat Seal Strength Initiation Temperature	105 °C	221 °F	Average value: 105 °C Grade Count:3

Electrical Properties	Metric	English	Comments
Dielectric Constant	2.27 - 2.29	2.27 - 2.29	Average value: 2.28 Grade Count:3
Dissipation Factor	0.0000400 - 0.000100	0.0000400 - 0.000100	Average value: 0.0000640 Grade Count:3

Thermal Properties	Metric	English	Comments
Melting Point	102 - 113 °C	216 - 235 °F	Average value: 108 °C Grade Count:41
Vicat Softening Point	84.0 - 128 °C	183 - 262 °F	Average value: 91.0 °C Grade Count:75
Brittleness Temperature	-76.0 - -60.0 °C	-105 - -76.0 °F	Average value: -73.5 °C Grade Count:8

Optical Properties	Metric	English	Comments
Haze	1.10 - 19.0 %	1.10 - 19.0 %	Average value: 8.09 % Grade Count:48
Gloss	10.0 - 112 %	10.0 - 112 %	Average value: 70.6 % Grade Count:42

Processing Properties	Metric	English	Comments
Processing Temperature	145 - 340 °C	293 - 644 °F	Average value: 208 °C Grade Count:9
Adapter Temperature	204 - 218 °C	400 - 425 °F	Average value: 211 °C Grade Count:3
Die Temperature	150 - 220 °C	302 - 428 °F	Average value: 187 °C Grade Count:8
Melt Temperature	110 - 364 °C	230 - 687 °F	Average value: 222 °C Grade Count:70

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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