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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 4,400 cps | 1,200 cps |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 20 minutes | 13 minutes |
| Cure Time | 16 hours | 24 hours |
| Shore D Hardness | 88 | — |
| Shore A Hardness | — | 80 |
| Specific Volume | 17.6 cu. in./lb. | 26.16 cu. in./lb. |
| Color | Metal Gray | Translucent |
| Tensile Strength | 3,250 psi | 955 psi |
| Elongation @ Break | 1 % | 127 % |
| Shrinkage | 0.0006 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
| TASK™ 18 | Econ™ 80 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 4,400 cps | 1,200 cps |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 26A:100B | 100A:90B |
| Pot Life | 20 minutes | 13 minutes |
| Handling Time | — | 6 hours |
| Cure Time | 16 hours | 24 hours |
| Shore D Hardness | 88 | — |
| Shore A Hardness | — | 80 |
| Specific Gravity | 1.57 g/cc | 1.06 g/cc |
| Specific Volume | 17.6 cu. in./lb. | 26.16 cu. in./lb. |
| Color | Metal Gray | Translucent |
| Die C Tear Strength | — | 77 pli |
| Tensile Strength | 3,250 psi | 955 psi |
| Tensile Modulus | 514,000 psi | — |
| Elongation @ Break | 1 % | 127 % |
| 100% Modulus | — | 670 psi |
| Compressive Strength | 8,420 psi | — |
| Compressive Modulus | 97,300 psi | — |
| Flexural Strength | 10,700 psi | — |
| Flexural Modulus | 86,000 psi | — |
| Shrinkage | 0.0006 in. / in. | 0.0014 in. / in. |
| Heat Deflection Temp | 149 °F | — |
Product Description
TASK™ 18
TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming or thermoforming molds.
When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns.
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