Reynolds Smooth-Cast® 380 High Density Urethane Tooling Resin

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Reynolds Smooth-Cast® 380 High Density Urethane Tooling Resin
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced
Material Notes:	Product Overview: Smooth-Cast™ 380 is a filled, high density casting resin formulated for a variety of tooling applications. This no-odor resin features a convenient 1A:1B mix ratio by volume, a 6 minute pot-life and cure time of about 60 minutes depending on mass and temperature. Low viscosity ensures minimal bubble entrapment and long term shrinkage of cured resin is very low. Cured material is very strong can be machined, drilled, sanded, etc. Color can be added with SO-Strong™ color tints. Information provided by Reynolds Advanced Materials
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Physical Properties	Metric	English	Comments

Specific Gravity	1.74 g/cc	1.74 g/cc	ASTM D-1475
Viscosity	1140 cP	1140 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.0025 cm/cm	0.0025 in/in	ASTM D-2566

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	82	82	ASTM D-2240
Tensile Strength, Ultimate	24.5 MPa	3550 psi	ASTM D-638
Elongation at Break	1.43 %	1.43 %	ASTM D-638
Tensile Modulus	3.38 GPa	490 ksi	ASTM D-638
Flexural Strength	33.6 MPa	4870 psi	ASTM D-790
Flexural Modulus	2.17 GPa	315 ksi	ASTM D-790
Compressive Strength	54.2 MPa	7860 psi	ASTM D-695
Compressive Modulus	0.869 GPa	126 ksi	ASTM D-695

Thermal Properties	Metric	English	Comments
Heat Distortion Temperature	53.0 °C	127 °F	ASTM D-648

Processing Properties	Metric	English	Comments
Cure Time	60.0 min	1.00 hour	Handling Time
Pot Life	6.00 min	6.00 min	ASTM D-2471

Descriptive Properties
Color	Tan
Mix Ratio	1A:1B		by volume
	1A:1B		by weight
Specific Volume	15.9		[cu. in./lb.]

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PREYN027 / 296728

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