Reynolds TASK® 18 (C-1508) Rigid Urethane Casting Compound

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Reynolds TASK® 18 (C-1508) Rigid Urethane Casting Compound
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced
Material Notes:	Product Overview: TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming molds. When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns. Information provided by Reynolds Advanced Materials
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Physical Properties	Metric	English	Comments

Specific Gravity	1.57 g/cc	1.57 g/cc	ASTM D-1475
Viscosity	4400 cP	4400 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.00060 cm/cm	0.00060 in/in	ASTM D-2566

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	88	88	ASTM D-2240
Tensile Strength, Ultimate	22.4 MPa	3250 psi	ASTM D-638
Elongation at Break	1.0 %	1.0 %	ASTM D-638
Tensile Modulus	3.54 GPa	514 ksi	ASTM D-638
Flexural Strength	73.8 MPa	10700 psi	ASTM D-790
Flexural Modulus	0.593 GPa	86.0 ksi	ASTM D-790
Compressive Strength	58.1 MPa	8420 psi	ASTM D-695
Compressive Modulus	0.671 GPa	97.3 ksi	ASTM D-695

Thermal Properties	Metric	English	Comments
Heat Distortion Temperature	65.0 °C	149 °F	ASTM D-648

Processing Properties	Metric	English	Comments
Cure Time	960 min	16.0 hour	Handling Time
Pot Life	20.0 min	20.0 min	ASTM D-2471

Descriptive Properties
Color	Metal Gray
Mix Ratio	26A:100B		by weight
Specific Volume	17.6		[cu. in./lb.]

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PREYN043 / 296744

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