| POLYSTYRENE IMPACT MODIFIED (HIPS) | ||
| DOW STRYON® HIGH IMPACT POLYSTYRENE PS DOW 478 W-27-NT (HIPS) | ||
| Dow Styron® High Impact Polystyrene PS Dow 478 W-27-NT | ||
| Styron® 478 is a high impact polystyrene with high flow, good gloss, excellent stiffness, high heat and impact resistance. It is used in applications such as toys, appliances, house wares, medical and consumer electronics. | ||
| APPLICATIONS | ||
| Burn-out plugs | ||
| Agency Ratings | ||
| • USP XXIII, Class VI | ||
| • FDA 21 CFR 177.1640 | ||
| • UL 94 | ||
| Properties | ||
| Physical | Nominal Values (English) | Test Method |
| Density - Specific Gavity | 1.04 sp gr 23°/23°C | ASTM D792 |
| Melt Flow Rate (200°C/5.0kg - G) | 6.00 g/10 min | ASTM D1238 |
| Mold Shrink, Linear-Flow | 0.0030 to 0.0070 in/in | ASTM D955 |
| Mechanical | Nominal Values (English) | Test Method |
| Tensile Modulus (2 in/min) | 306,000psi | ASTM D638 |
| Tensile Strength @ Yield (2 in/min) | 3,300psi | ASTM D638 |
| Tensile Strength @ Break (2 in/min) | 3,300psi | ASTM D638 |
| Tensile Elongation @ Break (2 in/min) | 45% | ASTM D638 |
| Flexural Modulus (0.05 in/min) | 327,000psi | ASTM D790 |
| Flexural Strength (0.05 in/min) | 7,000psi | ASTM D790 |
| Impact | Nominal Values (English) | Test Method |
| Notched Izod Impact | ASTM D256 | |
| (0°F, 0.125 in, 10 mil notch) | 1.00 ft-lb/in | |
| (73°F, 0.125 in, 10 mil notch) | 2.30 ft-lb/in | |
| Gardner Impact @ (73°F) | 100 in-lb | ASTM D3029 |
| Hardness | Nominal Values (English) | Test Method |
| Rockwell Hardness | ASTM D785 | |
| (R-Scale) | 105 | |
| (L-Scale) | 70 | |
| Thermal | Nominal Values (English) | Test Method |
| DTUL @ 264psi - Unannealed (0.125 in) | 172°F | ASTM D648 |
| DTUL @ 66psi - Unannealed (0.125 in) | 188°F | ASTM D648 |
| Vicat Softening Point | 217°F | ASTM D1525 |
| CLTE, Flow (-40°F to 180°F (-40°C to 82°C)) | 5.0E-005 in/in/°F | ASTM D696 |
| Ignition Characteristics | Nominal Values (English) | Test Method |
| Flame Rating - UL (0.0580 in) | HB | UL 94 |