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Specialty Compounds RTP Company

Reynolds EpoxAcast® 650; Hardener: HT High Temp Mineral filled casting epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy, Cast, Unreinforced

Material Notes: Product Overview: EpoxAcast™ 650 and EpoxAcast™ 650 BLACK are mineral filled general purpose casting epoxies that are low cost and versatile. They feature a low mixed viscosity for minimal bubble entrapment. Choose Fast, Medium or Slow catalyst to fit your project. You can also use HT Hardener to give your castings higher heat resistance. EpoxAcast™ 650 and EpoxAcast™ 650 BLACK are used for making hard dies for metal stamping as well as patterns and fixtures. They are also used for electrical encapsulation to extend the life cycles and enhance the performance of potted electronic devices. The high compressive strength of EpoxAcast™ 650 and EpoxAcast™ 650 BLACK makes it ideal for making stamping dies for production pressing of metal ornaments.

Information provided by Reynolds Advanced Materials

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.52 g/cc1.52 g/ccASTM D-1475
Viscosity 5000 cP5000 cPMixed; ASTM D-2393
Linear Mold Shrinkage 0.0070 cm/cm0.0070 in/inASTM D-2566
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 9393935; ASTM D-2240
Tensile Strength, Ultimate 47.6 MPa6900 psiASTM D-638
Elongation at Break 0.82 %0.82 %ASTM D-638
Tensile Modulus 7.439 GPa1079 ksiASTM D-638
Flexural Strength 74.81 MPa10850 psiASTM D-790
Flexural Modulus 5.34 GPa775 ksiASTM D-790
Compressive Strength 110.2 MPa15980 psiASTM D-695
Compressive Modulus 0.9267 GPa134.4 ksiASTM D-695
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 3.59e+15 ohm-cm>= 3.59e+15 ohm-cmASTM D257-99
Surface Resistance 5.42e+11 ohm5.42e+11 ohmASTM D257-99
Dielectric Constant  5.08
@Frequency 1000 Hz
5.08
@Frequency 1000 Hz
ASTM D150-98
 5.3
@Frequency 60 Hz
5.3
@Frequency 60 Hz
ASTM D150-98
Dielectric Strength 15.9 kV/mm404 kV/inASTM D-147-97a
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 86.0 °C187 °FDeflection Temp. Post cured per heat post curing schedule; ASTM D-648
 
Processing PropertiesMetricEnglishComments
Cure Time 1440 min24.0 hour24 Hours followed by: Heat cure for 2 hrs. at 175°F/80°C, then 3 hrs. at 300°F/150°C.
Pot Life 180 min180 minASTM D-2471
 
Descriptive Properties
ColorBlackEpoxAcast™ 650 BLACK
 Off-WhiteEpoxAcast™ 650
Mix Ratio100A:10Bby weight
Specific Volume18.2[in3/lb], ASTM D-792

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.

PREYN195 / 296896

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