Smooth-Cast™ 380
- Chemical Family
- Polyurethanes (PU)Urethanes
Smooth-Cast™ 380 is a filled, high density casting resin formulated for a variety of tooling applications. This no-odor resin features a convenient 1A:1B mix ratio by volume, a 6 minute pot-life and cure time of about 60 minutes depending on mass and temperature. Low viscosity ensures minimal bubble entrapment and long term shrinkage of cured resin is very low. Cured material is very strong can be machined, drilled, sanded, etc. Color can be added with SO-Strong™ color tints.
Product families
Applications
- Tooling & Moldmaking
Product Families
- Polyurethanes
Other characteristics
- Brand
- Smooth-Cast
- Density
- 1740.0 - 1740.0 kg/m³
- End Uses
- Tooling
- Polymer Name
- Polyurethane (unspecified)
- Processing Methods
- Casting
- Markets
- Industrial
- Shelf LIfe
Shelf life of product is reduced after opening. Remaining product should be used as soon as possible. Immediately replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product. XTEND-IT™ Dry Gas Blanket (available from Smooth-On) will significantly prolong the shelf life of unused liquid urethane products.
- Technology
- Plastics
- Material Features
- High Density
- Low Viscosity
- Odorless
Technical data
Table 1 of 1
16 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Mix Ratio | 1A:1B | by weight or volume | — |
| Mixed Viscosity | 1140 | cps | ASTM D-2393 |
| Specific Gravity | 1.74 | g/cc | ASTM D-1475 |
| Specific Volume | 15.9 | cu. in. /lb. | ASTM D-1475 |
| Pot Life | 6 | Minute | ASTM D-2471 |
| Demold Time | 60 | Minute | — |
| Hardness | 82 | Shore D | ASTM D-2240 |
| Ultimate Tensile | 3550 | psi | ASTM D-638 |
| Tensile Modulus | 490000 | psi | ASTM D-638 |
| Elongation at Break | 1.43 | % | ASTM D-638 |
| Flexural Strength | 4870 | psi | ASTM D-790 |
| Flexural Modulus | 315000 | psi | ASTM D-790 |
