General Plastics LAST-A-FOAM® FR-7120 Polyurethane Foam

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General Plastics LAST-A-FOAM® FR-7120 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	0.320 g/cc	0.0116 lb/in³	ASTM D1622

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	36	36	cut foam surface; ASTM D2240
Tensile Strength	4.92 MPa	714 psi	Perpendicular to Rise; ASTM D1623
	5.16 MPa	749 psi	Parallel to Rise; ASTM D1623
Flexural Strength	6.83 MPa	990 psi	Rise Parallel to Beam Thick.; ASTM D790
	7.03 MPa	1020 psi	Rise Parallel to Test Span; ASTM D790
Flexural Modulus	0.22865 GPa	33.163 ksi	Rise Parallel to Test Span; ASTM D790
	0.22866 GPa	33.164 ksi	Rise Parallel to Beam Thick.; ASTM D790
Compressive Strength	3.66 MPa @Temperature 93.3 °C	531 psi @Temperature 200 °F	Perpendicular to Rise; ASTM D1621
	4.03 MPa @Temperature 93.3 °C	584 psi @Temperature 200 °F	Parallel to Rise; ASTM D1621
	6.977 MPa @Temperature 23.9 °C	1012 psi @Temperature 75.0 °F	Perpendicular to Rise; ASTM D1621
	7.350 MPa @Temperature 23.9 °C	1066 psi @Temperature 75.0 °F	Parallel to Rise; ASTM D1621
Compressive Modulus	0.10982 GPa @Temperature 93.3 °C	15.928 ksi @Temperature 200 °F	Perpendicular to Rise; ASTM D1621
	0.13620 GPa @Temperature 93.3 °C	19.754 ksi @Temperature 200 °F	Parallel to Rise; ASTM D1621
	0.19475 GPa @Temperature 23.9 °C	28.246 ksi @Temperature 75.0 °F	Perpendicular to Rise; ASTM D1621
	0.25736 GPa @Temperature 23.9 °C	37.327 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	0.0559 W/m-K	0.388 BTU-in/hr-ft²-°F	ASTM C518
Glass Transition Temp, Tg	119 °C	246 °F	ASTM E1824

Descriptive Properties
Tumbling Friability (%)	1.2		20 mins at 60 rpm, ASTM C421
Water Absorption	0.009 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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PGENR053 / 186839

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