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Rulon Bearings

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Hexcel® HexPly® 954-3 Curing Cyanate Resin
Categories: Polymer; Thermoset; Epoxy

Material Notes: HexPly® 954-3 is a 350°F (177°C) curing cyanate resin with excellent resistance to moisture absorption, outgassing and microcracking. HexPly® 954-3 is formulated for autoclave or press molding using a standard cure of two hours at 350°F (177°C). Glass transition temperature can be maximized by post curing at 450°F (232°C). The recommended lay-up procedure is HSP-L3. The recommended cure procedure is HSP-C1 or HSP-C2.
Typical applications for HexPly® 954-3 include primary and secondary space structures and other applications where dimensional stability is critical.

Information provided by HexCel

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Physical PropertiesOriginal ValueComments
Density 1.19 g/cc
Water Absorption 0.70 %50% GH/EQ
Moisture Absorption at Equilibrium 0.18 %55% RH/EQ
Outgassing - Total Mass Loss 0.20 %954-3; ASTM E595
 1.0 %ASTM LIMITS; ASTM E595
Collected Volatile Condensable Material 0.010 %954-3; ASTM E595
 0.10 %ASTM LIMITS; ASTM E595
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 57.0 MPa
@Temperature 23.0 °C
Elongation at Break 2.4 %
Tensile Modulus 2.80 GPa
@Temperature 23.0 °C
Flexural Yield Strength 77.0 MPa
@Temperature 163 °C
Wet (7 day immersion at 71°C)
 87.0 MPa
@Temperature 163 °C
 119 MPa
@Temperature 23.0 °C
Flexural Modulus 2.10 GPa
@Temperature 163 °C
Wet (7 day immersion at 71°C)
 2.30 GPa
@Temperature 163 °C
 3.00 GPa
@Temperature 23.0 °C
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 2.73
@Frequency 1e+10 Hz,
Temperature 23.0 °C
Unconditioned; ASTM D2520
 2.73
@Frequency 1e+10 Hz,
Temperature 163 °C
Unconditioned; ASTM D2520
 2.85
@Frequency 1e+10 Hz,
Temperature 23.0 °C
Moisture conditioned (71°C and 95% RH for 140 days); ASTM D2520
 2.85
@Frequency 1e+10 Hz,
Temperature 163 °C
Moisture conditioned (71°C and 95% RH for 140 days); ASTM D2520
Dielectric Loss Index 0.0060
@Frequency 1e+10 Hz,
Temperature 23.0 °C
Unconditioned; ASTM D2520
 0.0080
@Frequency 1e+10 Hz,
Temperature 163 °C
Unconditioned; ASTM D2520
 0.010
@Frequency 1e+10 Hz,
Temperature 23.0 °C
Moisture conditioned (71°C and 95% RH for 140 days); ASTM D2520
 0.020
@Frequency 1e+10 Hz,
Temperature 163 °C
Moisture conditioned (71°C and 95% RH for 140 days); ASTM D2520
 
Thermal PropertiesOriginal ValueComments
CTE, linear 55.1 µm/m-°C
Glass Transition Temp, Tg 206 °CNo post cure
 258 °CWith post cure

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 go back to viewing the property data in MatWeb's normal format.

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