Overview of materials for Medium Density Polyethylene (MDPE), Rotational Molded

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Overview of materials for Medium Density Polyethylene (MDPE), Rotational Molded
Categories:	Polymer; Thermoplastic; Polyethylene (PE); Medium Density (MDPE); Medium Density Polyethylene (MDPE), Rotational Molded
Material Notes:	This property data is a summary of similar materials in the MatWeb database for the category "Medium Density Polyethylene (MDPE), Rotational 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	0.932 - 0.947 g/cc	0.0337 - 0.0342 lb/in³	Average value: 0.937 g/cc Grade Count:41
Environmental Stress Crack Resistance	4.00 - 1000 hour	4.00 - 1000 hour	Average value: 477 hour Grade Count:30
	19.0 - 28.0 hour @Temperature 50.0 - 50.0 °C	19.0 - 28.0 hour @Temperature 122 - 122 °F	Average value: 693 hour Grade Count:7
Melt Flow	1.70 - 7.00 g/10 min	1.70 - 7.00 g/10 min	Average value: 4.70 g/10 min Grade Count:40

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	55.0 - 65.0	55.0 - 65.0	Average value: 58.2 Grade Count:9
Tensile Strength, Ultimate	11.7 - 39.0 MPa	1700 - 5660 psi	Average value: 24.2 MPa Grade Count:9
Tensile Strength, Yield	14.0 - 24.1 MPa	2030 - 3500 psi	Average value: 19.0 MPa Grade Count:39
Elongation at Break	340 - 1500 %	340 - 1500 %	Average value: 965 % Grade Count:19
Elongation at Yield	8.00 - 17.4 %	8.00 - 17.4 %	Average value: 12.5 % Grade Count:13
Flexural Modulus	0.428 - 0.896 GPa	62.1 - 130 ksi	Average value: 0.643 GPa Grade Count:40
Izod Impact, Notched	0.530 - 5.30 J/cm	0.993 - 9.93 ft-lb/in	Average value: 2.12 J/cm Grade Count:5
Charpy Impact, Notched	1.80 - 15.0 J/cm²	8.57 - 71.4 ft-lb/in²	Average value: 6.27 J/cm² Grade Count:3
	>= 15.0 J/cm² @Temperature -30.0 - -30.0 °C	>= 71.4 ft-lb/in² @Temperature -22.0 - -22.0 °F	Average value: 15.0 J/cm² Grade Count:1
Tensile Impact Strength	145 - 163 kJ/m²	69.0 - 77.6 ft-lb/in²	Average value: 154 kJ/m² Grade Count:4
Dart Drop Total Energy	190 - 210 J/cm	0.356 - 0.393 ft-lb/mil	Average value: 206 J/cm Grade Count:14
Dart Drop	142 - 152 g/micron	3610 - 3860 g/mil	Average value: 151 g/micron Grade Count:13

Thermal Properties	Metric	English	Comments
Melting Point	122 - 129 °C	252 - 264 °F	Average value: 126 °C Grade Count:14
Crystallization Temperature	112 - 114 °C	234 - 237 °F	Average value: 113 °C Grade Count:4
Deflection Temperature at 0.46 MPa (66 psi)	47.0 - 76.0 °C	117 - 169 °F	Average value: 62.2 °C Grade Count:26
Deflection Temperature at 1.8 MPa (264 psi)	37.3 - 42.0 °C	99.1 - 108 °F	Average value: 39.5 °C Grade Count:8
Vicat Softening Point	108 - 122 °C	226 - 252 °F	Average value: 116 °C Grade Count:16
Brittleness Temperature	-100 - -70.0 °C	-148 - -94.0 °F	Average value: -72.1 °C Grade Count:14

Processing Properties	Metric	English	Comments
Melt Temperature	131 - 315 °C	268 - 599 °F	Average value: 208 °C Grade Count:13

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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O3906 / 78270

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