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Ensinger PEI

Solvay CYCOM® 5250-4 BMI Prepreg System with Woven Glass Fiber 6781
Categories: Polymer; Thermoset; Bismaleimide (BMI)

Material Notes: CYCOM® 5250-4 is a 350°F to 400°F (177°C to 204°C) curing bismaleimide resin with a service temperature range of -75°F to 400°F (-59°C to 204°C). CYCOM 5250-4 is specifically formulated for use in primary aircraft structures. In addition, a variety of secondary structural components can take advantage of the increased performance from using high-strain carbon fibers and the improved damage-resistance this system provides. CYCOM 5250-4 is available with either carbon fiber or glass fiber reinforcement in unidirectional tape, woven broadgood and roving forms.

Features & Benefits:

  • Short-term service temperature up to 450°F (232°C)
  • Superior hot/wet properties at 220°F to 375°F (104°C to 190°C)
  • Excellent toughness
  • Void-free laminates
  • High temperature resistance
  • Low thermal conductivity
  • Versatile cure
  • Excellent compression strength properties after impact
  • Shop life greater than 28 days at room temperature
  • Fluid/solvent resistant
Suggested Applications: Primary and secondary aircraft structure including:
  • Engine nacelles
  • Fuselage skins and stiffeners
  • Wing and stabilizer spars and skins
  • Other critical load-bearing components
Mechanical properties are reported for standard cure + standard post-cure

Information provided by Cytec, subsequently acquired by Solvay.

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Physical PropertiesMetricEnglishComments
Volatiles 2.0 %2.0 %
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 593 MPa
@Temperature 24.0 °C
86000 psi
@Temperature 75.2 °F
Warp, Glass Style 6781; ASTM D638
Tensile Modulus 27.6 GPa
@Temperature 24.0 °C
4000 ksi
@Temperature 75.2 °F
Warp, Glass Style 6781
Compressive Strength 497 MPa
@Temperature 24.0 °C
72100 psi
@Temperature 75.2 °F
Warp, Glass Style 6781; ASTM D695
Compressive Modulus 25.5 GPa
@Temperature 24.0 °C
3700 ksi
@Temperature 75.2 °F
Warp, Glass Style 6781
Shear Strength 62.1 MPa9000 psiShort Beam Warp, Glass Style 6781; ASTM D2344
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 204 °C400 °FContinuous; depends on cure cycle
 232 °C450 °Fshort term; depends on cure cycle
Minimum Service Temperature, Air -59.4 °C-75.0 °F
Glass Transition Temp, Tg 200 °C392 °FWet; QC-PT-22
 216 °C421 °FPost Cure: 177°C for 6 hrs
 249 °C480 °FPost Cure: 190°C for 6 hrs
 263 °C505 °FPost Cure: 210°C for 6 hrs
 282 °C540 °FPost Cure: 227°C for 6 hrs
 300 °C572 °FDry; QC-PT-22
 304 °C579 °FPost Cure: 243°C for 6 hrs
 
Processing PropertiesMetricEnglishComments
Processing Temperature 177 - 204 °C350 - 400 °FCure Temperature - Autoclave
Gel Time 65.0 min
@Temperature 177 °C
65.0 min
@Temperature 351 °F
in nitrogen atmosphere; QC-TP-87
Shelf Life  >= 1.00 Month
@Temperature 72.0 °C
>= 1.00 Month
@Temperature 162 °F
 >= 3.00 Month
@Temperature 4.44 °C
>= 3.00 Month
@Temperature 40.0 °F
 >= 12.0 Month
@Temperature -17.8 °C
>= 12.0 Month
@Temperature 0.000 °F

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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PCYTED133_8 / 192684

Proto3000 – 3D Engineering Solutions

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