Smooth-On TASK 4 2 Gallon Kit

Article number: 66C1511B
Availability: In stock (2)

TASK® 4 is a unique polyurethane casting resin that is very strong when cast in Ultra-Thin sections ranging from 0.03” to 0.50”(0.075cm to 1.27cm). TASK® 4 has a very low mixed viscosity, ensuring flawless pick-up of even the finest detail. Cured plastic exhibits very low shrinkage which is why this plastic has become a favorite of prototype and design professionals throughout the world. Pot life is 20 minutes and cure time is 16 hours at 73°F/23°C.Vibrant colors and color effects are possible by adding SO-Strong® color tints. Fully cured models made from TASK® 4 are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for TASK® 4 include making prototype and architectural models, model toys, durable miniatures, ultra-thin mechanical parts and special effect props.

  • Mix Ratio:100A:100B by weight
  • Mixed Viscosity, cps: 250(ASTM D-2393)
  • Specific Gravity, g/cc: 1.167(ASTM D-1475)
  • Specific Volume, cu. in. /lb.: 23.9(ASTM D-1475)
  • Pot Life: 20 min. @ 73° F / 23°C **(ASTM D-2471)
  • Cure time: 16 hours @ 73° F / 23°C **
  • Color: Ivory
  • Shore D Hardness: 83 (ASTM D-2240)
  • Ultimate Tensile, psi: 6,500(ASTM D-638)
  • Tensile Modulus, psi: 130,000(ASTM D-638)
  • Elongation @ Break: 4%(ASTM D-638)
  • Flexural Strength, psi: 9,000(ASTM D-790)
  • Flexural Modulus, psi: 204,000(ASTM D-790)
  • Compressive Strength, psi: 7,400(ASTM D-695)
  • Heat Deflection Temp:110°F/45°C(ASTM D-648)
  • Compressive Modulus, psi: 75,000(ASTM D-695)
  • Shrinkage, in./in.: 0.0035(ASTM D-2566)
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