Park Aerospace Nelcote® F-557 Phenolic Prepreg, Chopped Molding Compound Reinforced

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Park Aerospace Nelcote® F-557 Phenolic Prepreg, Chopped Molding Compound Reinforced
Categories:	Polymer; Thermoset; Phenolic
Material Notes:	Nelcote® F-557 is a high purity silica filler phonic resin coated on Commercial or Aerospace grade silica fabric. F-557 is used in the manufacture of intermediate temperature ablative rocket nozzles, heat shields, and combustion chambers in highly oxidative environments. Key Features and Benefits: Provides a combination of high-strength and ablative properties for demanding applications Low thermal expansion Good Tack and Drape properties Applications/Qualifications: Rocket Nozzles Combustion Chambers Heat Shields Rocket Motor Throat Sections Information provided by Park Electrochemical Corp.
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Physical Properties	Metric	English	Comments

Filler Content	3.4 - 5.4 %	3.4 - 5.4 %
Volatiles	2.0 - 5.0 % @Temperature 135 °C	2.0 - 5.0 % @Temperature 275 °F	8 min

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	29.6 MPa @Temperature 23.9 °C	4300 psi @Temperature 75.0 °F	0° Direction, Dry; 325°F 2500psi; ASTM D3039b
	37.2 MPa @Temperature 23.9 °C	5400 psi @Temperature 75.0 °F	0° Direction, Dry; 325°F 2500psi and Post-Cure; ASTM D3039b
Tensile Modulus	15.2 GPa @Temperature 23.9 °C	2200 ksi @Temperature 75.0 °F	0° Direction, Dry; 325°F 2500psi and Post-Cure; ASTM D3039b
	17.2 GPa @Temperature 23.9 °C	2500 ksi @Temperature 75.0 °F	0° Direction, Dry; 325°F 2500psi; ASTM D3039b
Flexural Strength	58.6 MPa @Temperature 23.9 °C	8500 psi @Temperature 75.0 °F	Dry; 325°F 2500psi; ASTM D790
	103 MPa @Temperature 23.9 °C	15000 psi @Temperature 75.0 °F	Dry; 325°F 2500psi and Post-Cure; ASTM D790
Flexural Modulus	14.5 GPa @Temperature 23.9 °C	2100 ksi @Temperature 75.0 °F	Dry; 325°F 2500psi and Post-Cure; ASTM D790
Compressive Strength	176 MPa @Temperature 23.9 °C	25500 psi @Temperature 75.0 °F	Dry; 325°F 2500psi; ASTM D695
	214 MPa @Temperature 23.9 °C	31000 psi @Temperature 75.0 °F	Dry; 325°F 2500psi and Post-Cure; ASTM D695

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.00 J/g-°C	0.240 BTU/lb-°F	ASTM C351
Thermal Conductivity	0.389 W/m-K @Temperature 149 °C	2.70 BTU-in/hr-ft²-°F @Temperature 300 °F	ASTM C177

Processing Properties	Metric	English	Comments
Shelf Life	6.00 Month @Temperature 4.44 °C	6.00 Month @Temperature 40.0 °F

Descriptive Properties
Nominal Prepreg Weight (oz/yd)	30
Resin Flow (%)	10-25		325°F, 150psi
Resin Solids Content (%)	30-36

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.

PPARK060 / 89332

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