Smooth-Cast™ 325
- Chemical Family
- Polyurethanes (PU)Urethanes
Smooth-Cast™ 325 is fast-cast resin that were developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. The ColorMatch™ Series is formulated “color neutral”. Small amounts of pigment will yield accurate, vivid colors from cured castings using So-Strong™, UVO™ or Ignite™ colorants. The ColorMatch™ Series offers the convenience of a 1A: 1B mix ratio by volume and has a very low viscosity. Demold times range from about 10 minutes to 2-4 hours (depending on product, mass and mold configuration). Note: Large mass castings will get very hot and shrink more, depending on mold configuration.
Product families
- Polyurethanes
Other characteristics
- Brand
- Smooth-Cast
- Density
- 1070.0 - 1070.0 kg/m³
- End Uses
- Jewelry, Modeling Material, Prototyping
- Polymer Name
- Polyurethane (unspecified)
- Tensile Strength
- 21.8413 - 21.8413 MPa
- Processing Methods
- Casting
- Safety
Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Use only in a well-ventilated area
- Markets
- Consumer Goods
- 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
- Low Viscosity
- Prodcut Highlights
The ColorMatch™ Series also readily accept fillers (such as URE-FIL™ 3 from Smooth-On). Because of its neutral color, Smooth-Cast™ 325 is ideal for creating marble and wood grain casting effects, or duplicating the look of real metal by adding bronze, brass or other metal powder. Applications for the ColorMatch™ Series plastics include making pigmented prototype models or figures, special effect props, reproducing small to medium size sculptures, decorative jewelry, etc.
Technical data
Table 1 of 1
16 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Pot Life at 73°F (23°C) | 2.5 | Minute | ASTM D-2471 |
| Cure Time at 73°F (23°C) | 10 | Hr | — |
| Tensile Strength | 3170 | psi | ASTM D-638 |
| Tensile Modulus | 140000 | psi | ASTM D-638 |
| Elongation at Break | 10 | % | ASTM D-638 |
| Flexural Strength | 3690 | psi | ASTM D-790 |
| Flexural Modulus | 101000 | psi | ASTM D-790 |
| Compressive Strength | 3500 | psi | ASTM D-695 |
| Compressive Modulus | 36500 | psi | ASTM D-695 |
| Shrinkage | 0.01 | in./in. | ASTM D-2566 |
| Mix Ratio | 1A:1B (115A:100B) | by volume (by weight) | — |
| Mixed Viscosity | 100 | cps | ASTM D-2393 |
