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Hexcel® HexPly® M18 356°F (180°C) Curing Epoxy Matrix
Categories: Polymer; Thermoset; Epoxy; Epoxy Cure Resin

Material Notes: HexPly® M18 has been developed to fulfill the requirements of the aerospace industry for primary structures using standard manufacturing processes. The matrix has improved properties which allow easy layup, good tack life, and a good component surface finish A low moisture uptake allows good hot/wet performance up to 302ºF (150ºC) and a general service temperature up to 356ºF (180ºC).

Information provided by HexCel

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Physical PropertiesMetricEnglishComments
Density 1.16 g/cc0.0419 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield 81.1 MPa11800 psiISO R527 type 1
Elongation at Yield 3.7 %3.7 %ISO R527 type 1
Tensile Modulus 3.50 GPa508 ksiISO R527 type 1
Flexural Yield Strength 140 MPa20300 psiISO 178
Flexural Modulus 2.86 GPa415 ksiISO 178
Compressive Yield Strength 373 MPa54100 psiISO 604
Poissons Ratio 0.380.38ISO R527 type 1
Fracture Toughness 0.890 MPa-m½0.810 ksi-in½Tested in accordance with EGF Task Group on Polymers and Composites protocol.
Shear Modulus 1.27 GPa184 ksiCalculated
Toughness 193 J142 ft-lbPer square meter; Tested in accordance with EGF Task Group on Polymers and Composites protocol.
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 180 °C356 °F
Glass Transition Temp, Tg 198 °C388 °FDMTA
Shrinkage 1.12 %1.12 %
 
Processing PropertiesMetricEnglishComments
Shelf Life 12.0 Month
@Temperature -18.0 °C
12.0 Month
@Temperature -0.400 °F
 
Descriptive Properties
Tack Life (days)30

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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PHEXC160 / 98630

Specialty Compounds RTP Company

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