Reynolds Smooth-Cast® 61D Semi-Rigid Urethane Casting Resins

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Reynolds Smooth-Cast® 61D Semi-Rigid Urethane Casting Resins
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced
Material Notes:	Product Overview: The Smooth-Cast™ Semi-Rigid line of low-cost semi-rigid urethane casting resins cure quickly to semi-rigid plastics that offer exceptional strength and impact resistance. New Formulations – New Look! Smooth-Cast 45D, 60D and 61D are newly reformulated with a translucent white appearance and improved physical properties. All Smooth-Cast semi-rigids are now mercury free and phthalate free. These plastics are easy-to-use (mix ratio is 1A:1B by volume) and have low viscosities for minimal bubble entrapment. Vibrant colors are possible by adding SO-Strong™, UVO™ or Ignite™ colorants. Information provided by Reynolds Advanced Materials
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Physical Properties	Original Value	Comments

Specific Gravity	1.05 g/cc	ASTM D-1475
Viscosity	430 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.0125 in/in	ASTM D-2566

Mechanical Properties	Original Value	Comments
Hardness, Shore D	61	ASTM D-2240
Tensile Strength, Ultimate	2420 psi	ASTM D-638
Elongation at Break	100 %	ASTM D-638
Tensile Modulus	16400 psi	ASTM D-638
Flexural Strength	350 psi	ASTM D-790
Flexural Modulus	8800 psi	ASTM D-790
Compressive Strength	950 psi	ASTM D-695
Compressive Modulus	4100 psi	ASTM D-695

Processing Properties	Original Value	Comments
Cure Time	60.0 min	Handling Time
Pot Life	7.00 min	ASTM D-2471

Descriptive Properties
Color	Translucent White
Mix Ratio	100A:93B	by weight
	1A:1B	by volume
Specific Volume	26.4	[cu. in./lb.]

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PREYN012 / 296713

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