Reynolds Smooth-Cast® 320 Off-White, Ultra Low Viscosity Liquid Plastics

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Reynolds Smooth-Cast® 320 Off-White, Ultra Low Viscosity Liquid Plastics
Categories:	Polymer; Thermoplastic
Material Notes:	Product Overview: The Smooth-Cast™ 320 Series consists of ultra-low viscosity casting resins that yield virtually bubble-free off-white castings. The Smooth-Cast™ 320 resins are sister products to our popular Smooth-Cast™ 300 Series of bright white plastics, but are easier to color using SO-Strong™, UVO™ or Ignite™ color tints. Smooth-Cast™ 320 series is easy to mix and pour, offering the convenience of a 1A:1B by volume or 100A : 90B by weight mix ratio. The Smooth-Cast™ 320 Series resins readily accept pigments and fillers (such as URE-FIL™ 3, 5 and 7 from Smooth-On). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 320 Series resins include reproducing small to medium size sculptures, making prototype models, special effect props, decorative jewelry and taxidermy (bones, antlers, teeth etc.). 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	80 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	0.010 in/in	ASTM D-2566

Mechanical Properties	Original Value	Comments
Hardness, Shore D	70	ASTM D-2240
Tensile Strength, Ultimate	3000 psi	ASTM D-638
Elongation at Break	10 %	ASTM D-638
Tensile Modulus	138000 psi	ASTM D-638
Flexural Strength	4500 psi	ASTM D-790
Flexural Modulus	132000 psi	ASTM D-790
Compressive Strength	3650 psi	ASTM D-695
Compressive Modulus	45800 psi	ASTM D-695

Thermal Properties	Original Value	Comments
Heat Distortion Temperature	60.0 °C	ASTM D-648

Processing Properties	Original Value	Comments
Cure Time	10.0 min	Handling Time
Pot Life	3.00 min	ASTM D-2471

Descriptive Properties
Color	Off-White
Mix Ratio	100A:90B	by weight
	1A:1B	by volume
Specific Volume	26.4	[cu. in./lb.]

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PREYN019 / 296720

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