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Smooth-Cast® 310

Smooth-Cast® 310 Technical Specifications

Bright White, Ultra Low Viscosity Liquid Plastics

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All Technical Data

Smooth-Cast® 310
Product Type
  • Urethane Resins
Mixed Viscosity80 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:90B
Pot Life20 minutes
Cure Time4 hours
Shore D Hardness70
Specific Gravity1.05 g/cc
Specific Volume26.4 cu. in./lb.
Tensile Strength3,000 psi
Tensile Modulus134,000 psi
Elongation @ Break7.5 %
Compressive Strength3,800 psi
Compressive Modulus44,900 psi
Flexural Strength4,000 psi
Flexural Modulus118,000 psi
Shrinkage0.0065 in. / in.
Heat Deflection Temp120 °F

Product Description

Smooth-Cast® 310

The Smooth-Cast® 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. The differences between them are pot life and demold time.

These resins readily accept fillers (such as URE-FIL® 3 from Smooth-On) and can be colored with SO-Strong® or Ignite® color tints (Smooth-Cast® 325 series accepts pigments better than the Smooth Cast® 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast® 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.

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