General Plastics LAST-A-FOAM® FR-6720 Polyurethane Foam

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General Plastics LAST-A-FOAM® FR-6720 Polyurethane Foam
Categories:	Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Product Description: LAST-A-FOAM® FR-6700 is a CFC-free, rigid, closed-cell, flame-retardant polyurethane foam for aircraft composite core that withstands process temperatures up to 250°F. It is available in densities ranging from 10 to 25 pounds per cubic foot and exhibits a high strength-to-weight ratio due to its cellular structure and cross-linked resin. Because of its closed-cell structure, LAST-A-FOAM® FR-6700 has great resistance to water absorption and will not swell, crack, or split on exposure to water. Product Feature: Stable Inert Will not support fungal growth Resistant to most chemicals and solvents Easily shaped with common woodworking tools Performs well as wood replacement Applications: Models and design prototypes Composite Core Honeycomb edge close-out for aircraft interior sandwich panels used in overhead storage bins, passenger cabin class dividers, galleys and lavatories Vacuum form dies and mold patterns Information provided by General Plastics Manufacturing Company
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Physical Properties	Original Value	Comments

Density	0.320 g/cc	ASTM D1622

Mechanical Properties	Original Value	Comments
Hardness, Shore D	35.6	cut foam surface; ASTM D2240
Tensile Strength	793 psi	Perpendicular to Rise; ASTM D1623
	801 psi	Parallel to Rise; ASTM D1623
Flexural Strength	1224 psi	Rise Parallel to Beam Thick.; ASTM D790
	1226 psi	Rise Parallel to Test Span; ASTM D790
Flexural Modulus	42373 psi	Rise Parallel to Test Span; ASTM D790
	43349 psi	Rise Parallel to Beam Thick.; ASTM D790
Compressive Strength	508 psi @Temperature 121 °C	Parallel to Rise; ASTM D1621
	544 psi @Temperature 121 °C	Perpendicular to Rise; ASTM D1621
	801 psi @Temperature 93.3 °C	Parallel to Rise; ASTM D1621
	805 psi @Temperature 93.3 °C	Perpendicular to Rise; ASTM D1621
	1392 psi @Temperature 23.9 °C	Perpendicular to Rise; ASTM D1621
	1398 psi @Temperature 23.9 °C	Parallel to Rise; ASTM D1621
	2136 psi @Temperature -53.9 °C	Perpendicular to Rise; ASTM D1621
	2151 psi @Temperature -53.9 °C	Parallel to Rise; ASTM D1621
Compressive Modulus	17416 psi @Temperature 121 °C	Parallel to Rise; ASTM D1621
	17417 psi @Temperature 121 °C	Perpendicular to Rise; ASTM D1621
	24922 psi @Temperature 93.3 °C	Parallel to Rise; ASTM D1621
	25102 psi @Temperature 93.3 °C	Perpendicular to Rise; ASTM D1621
	35401 psi @Temperature 23.9 °C	Perpendicular to Rise; ASTM D1621
	36759 psi @Temperature 23.9 °C	Parallel to Rise; ASTM D1621
	40229 psi @Temperature -53.9 °C	Perpendicular to Rise; ASTM D1621
	40832 psi @Temperature -53.9 °C	Parallel to Rise; ASTM D1621
Poissons Ratio	0.30

Thermal Properties	Original Value	Comments
CTE, linear	40.0 µin/in-°F @Temperature 23.9 - 121 °C
	350 µin/in-°F @Temperature -45.6 - 93.3 °C	GP Method
Specific Heat Capacity	0.376 BTU/lb-°F	ASTM E1269
Thermal Conductivity	0.405 BTU-in/hr-ft²-°F	ASTM C518
Maximum Service Temperature, Air	250 °F
Minimum Service Temperature, Air	-320 °F
Glass Transition Temp, Tg	275 °F	ASTM E1824

Descriptive Properties
Closed Cell Content	68%	25 lbs/ft³
	96%	10 lbs/ft³
Heat of Combustion	10939 BTU/lb	ASTM D240
Tumbling Friability (%)	1	25 lbs/ft³
	10.89	10 lbs/ft³
Water Absorption	0.01 lbs/ft²	18 lbs/ft³
	0.049 lbs/ft²	10 lbs/ft³

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PGENR040 / 186826

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