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Smooth-Cast® 321
| Category: | PUR, Unspecified , Polyurethane |
| Manufacturer: | Smooth-On, Inc |
| Trademark: | Smooth-Cast® |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | N7d91q_Smooth-Cast-321.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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The Smooth-Cast® 320 Series consists of ultra-low viscosity casting resins that yield virtually bubble-free off-white castings. The Smooth-Cast® 320 resins are sister products to our popular Smooth-Cast® 300 Series of bright white plastics, but are easier to color using SO-Strong® or Ignite® color tints. Smooth-Cast® 320 series is easy to mix and pour, offering the convenience of a 1A:1B by volume or 100A : 90B by weight mix ratio. The Smooth-Cast® 320 Series resins readily accept pigments and fillers (such as URE-FIL® 3, 5 and 7 from Smooth-On). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast® 320 Series resins include reproducing small to medium size sculptures, making prototype models, special effect props, decorative jewelry and taxidermy (bones, antlers, teeth etc.). |
| General Information | |
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| Physical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Specific Gravity | 1.05 | g/cm³ | ASTM D1475 |
| Specific Volume | 0.954 | cm³/g | ASTM D1475 |
| Additional Information | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Mixing Ratio | 100A:90B by weight 1A:1B by volume |
| Physical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Molding Shrinkage - Flow | 0.70 | % | ASTM D2566 |
| Hardness | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Durometer Hardness (Shore D) | 70 | ASTM D2240 |
| Mechanical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Modulus | 951 | MPa | ASTM D638 |
| Tensile Strength | 20.7 | MPa | ASTM D638 |
| Tensile Elongation (Break) | 8.0 | % | ASTM D638 |
| Flexural Modulus | 758 | MPa | ASTM D790 |
| Flexural Strength | 24.1 | MPa | ASTM D790 |
| Compressive Modulus | 278 | MPa | ASTM D695 |
| Compressive Strength | 24.5 | MPa | ASTM D695 |
| Thermal | Nominal Value | Unit | Test Method |
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| Deflection Temperature Under Load (1.8 MPa, Unannealed) | 60.0 | °C | ASTM D648 |
| Thermoset | Nominal Value | Unit | Test Method |
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| Pot Life | 7.0 to 9.0 | min | |
| Thermoset Mix Viscosity | 80.0 | cP | ASTM D2393 |
| Demold Time 1(23°C) | 30 | min |
| Note Message | |
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| 1 . | Cure Time |
| Resin Grade | Manufacturer | Category | Trademark |
|---|---|---|---|
| Sinvicomp SGN7229 | Teknor Apex Asia Pacific PTE. LTD. | PVC, Flexible | Sinvicomp |
| Supol HT980UE Black | LyondellBasell Industries | PP Homopolymer | Supol |
| TAIRIPRO K9017 | Formosa Plastics Corporation | PP Impact Copolymer | TAIRIPRO |
| Badamid® LB70 GF M35 FR HF | Bada AG | Nylon 6 | Badamid® |
| CERTENE™ PHM-20 | Muehlstein | PP Homopolymer | CERTENE™ |
