General Plastics LAST-A-FOAM® FR-7104 Polyurethane Foam

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General Plastics LAST-A-FOAM® FR-7104 Polyurethane Foam
Categories:	Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Product Feature: Will not warp or bow Chemically inert Dimensionally stable Grain-free stock material Fine-cell structures Closed-cell Easily bonded and finished with a wide variety of adhesives and coatings Low densities can be hand carved and shaped easily with common woodworking tools Higher densities are available for CNC work where more accuracy is desired Custom sizes available Applications: Proof stock Composite core Prototype models Styling models Tooling aids Check fixtures Mold patterns Foundry patterns Decorative trim Information provided by General Plastics Manufacturing Company
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Physical Properties	Metric	English	Comments

Density	0.0640 g/cc	0.00231 lb/in³	ASTM D1622

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	3.5	3.5	cut foam surface; ASTM D2240
Tensile Strength	0.634 MPa	92.0 psi	Perpendicular to Rise; ASTM D1623
	0.648 MPa	94.0 psi	Parallel to Rise; ASTM D1623
Flexural Strength	0.689 MPa	100 psi	Rise Parallel to Beam Thick.; ASTM D790
	0.696 MPa	101 psi	Rise Parallel to Test Span; ASTM D790
Flexural Modulus	0.02102 GPa	3.048 ksi	Rise Parallel to Beam Thick.; ASTM D790
	0.02112 GPa	3.063 ksi	Rise Parallel to Test Span; ASTM D790
Compressive Strength	0.276 MPa @Temperature 93.3 °C	40.0 psi @Temperature 200 °F	Perpendicular to Rise; ASTM D1621
	0.296 MPa @Temperature 93.3 °C	43.0 psi @Temperature 200 °F	Parallel to Rise; ASTM D1621
	0.510 MPa @Temperature 23.9 °C	74.0 psi @Temperature 75.0 °F	Perpendicular to Rise; ASTM D1621
	0.758 MPa @Temperature 23.9 °C	110 psi @Temperature 75.0 °F	Parallel to Rise; ASTM D1621
Compressive Modulus	0.009094 GPa @Temperature 93.3 °C	1.319 ksi @Temperature 200 °F	Perpendicular to Rise; ASTM D1621
	0.0111 GPa @Temperature 93.3 °C	1.61 ksi @Temperature 200 °F	Parallel to Rise; ASTM D1621
	0.01324 GPa @Temperature 23.9 °C	1.921 ksi @Temperature 75.0 °F	Perpendicular to Rise; ASTM D1621
	0.01631 GPa @Temperature 23.9 °C	2.365 ksi @Temperature 75.0 °F	Parallel to Rise; ASTM D1621
Poissons Ratio	0.30	0.30

Thermal Properties	Metric	English	Comments
CTE, linear	55.8 µm/m-°C @Temperature -45.6 - 93.3 °C	31.0 µin/in-°F @Temperature -50.0 - 200 °F	GP Method
Thermal Conductivity	0.0272 W/m-K	0.189 BTU-in/hr-ft²-°F	ASTM C518
Glass Transition Temp, Tg	119 °C	246 °F	ASTM E1824

Descriptive Properties
Tumbling Friability (%)	8.2		20 mins at 60 rpm, ASTM C421
Water Absorption	0.019 lbs/ft²		ASTM D2842

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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PGENR043 / 186829

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