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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 300 cps | 1,200 cps |
| Pot Life | 3 minutes | 13 minutes |
| Cure Time | 30 minutes | 24 hours |
| Shore D Hardness | 57 | — |
| Shore A Hardness | — | 80 |
| Color | Translucent White | Translucent |
| Tensile Strength | 2,420 psi | 955 psi |
| Elongation @ Break | 100 % | 127 % |
| Shrinkage | 0.012 in. / in. | 0.0014 in. / in. |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| Smooth-Cast™ 57D | Econ™ 80 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 300 cps | 1,200 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 100A:93B | 100A:90B |
| Pot Life | 3 minutes | 13 minutes |
| Handling Time | — | 6 hours |
| Cure Time | 30 minutes | 24 hours |
| Shore D Hardness | 57 | — |
| Shore A Hardness | — | 80 |
| Specific Gravity | 1.05 g/cc | 1.06 g/cc |
| Specific Volume | 26.4 cu. in./lb. | 26.16 cu. in./lb. |
| Color | Translucent White | Translucent |
| Die C Tear Strength | — | 77 pli |
| Tensile Strength | 2,420 psi | 955 psi |
| Elongation @ Break | 100 % | 127 % |
| 100% Modulus | — | 670 psi |
| Shrinkage | 0.012 in. / in. | 0.0014 in. / in. |
Product Description
Smooth-Cast™ 57D
Smooth-Cast™ 57D is a semi-rigid urethane plastic that offers a gradual cure profile (does not snap cure), making it suitable for machine or hand rotational casting.
Use For Rotational Casting - Once poured into a suitable rubber mold configuration, the mold can be rotated so that the resin mixture gradually coats the inside of the mold cavity. After an adequate wall thickness is attained inside the mold, the result is a cured hollow casting that is semi-rigid and highly impact resistant.
Use as a Casting Resin – Smooth-Cast™ 57D can also be used as a casting resin for making solid, semi-rigid castings that are tough and durable.
Mix ratio is 1A:1B by volume. Working time is 3 minutes, demold time is 30 minutes and full cure properties are attained after 24 hours. Color is white translucent and the material is very easy to color with SO-Strong™, UVO™ or Ignite™ colorants. Cured resin is also easy to paint with acrylic paints or UreCoat™ flexible coating for applications requiring thick, durable finishes.
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Econ™ 80
Econ™ 80 is an economical Shore 80A urethane rubber suitable for a variety of mold making and industrial applications. It is a lower cost, faster cure alternative to our popular PMC™-780. Physical properties are lower vs. PMC™-780. This is a no odor system that features a 1A:1B mix ratio and a low viscosity for easy mixing and pouring. Working time is about 13 minutes at room temperature, handling time is 6 hours and rubber cures overnight. Econ™ 80 is translucent and easily colored with SO-Strong™ or Ignite™ colorants. Econ™ 80 is used to make short run molds for casting concrete and resins, concrete stamping pads, rubber mechanical parts, coating fabrics, pour-in-place gaskets for industrial equipment and burial vaults. Important: To minimize air bubbles in cured rubber, vacuum degassing is recommended.
FOR COMMERCIAL/INDUSTRIAL USE ONLY