DuPont Rynite? PET 925ST BK509 PET
Subcategory: Polyester, TP; Polyethylene Terephthalate (PET); Polymer; Thermoplastic
Material Notes:
Rynite? 925ST is a 25% glass fiber/mineral reinforced, toughened polyethylene terephthalate for injection molding. It has improved break resistance, dimensional stability and low warpage.
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| Physical Properties | Metric | English | Comments | |
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| Density | 1.49 g/cc | 0.0538 lb/in? | ISO 1183 | |
| Filler Content | 25 % | 25 % | Glass Fiber/Mineral | |
| Linear Mold Shrinkage | 0.003 cm/cm | 0.003 in/in | Parallel 2.0mm; ISO 294-4 | |
| Linear Mold Shrinkage, Transverse | 0.008 cm/cm | 0.008 in/in | 2.0mm; ISO 294-4 | |
Mechanical Properties |
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| Tensile Strength at Break | 70 MPa | 10200 psi | ISO 527 | |
| Elongation at Break | 3 % | 3 % | ISO 527 | |
| Tensile Modulus | 6.5 GPa | 943 ksi | ISO 527 | |
| Izod Impact, Notched (ISO) | 5 kJ/m? | 2.38 ft-lb/in? | ISO 180/1A | |
| Charpy Impact Unnotched | 3 J/cm? | 14.3 ft-lb/in? | ISO 179/1eU | |
| Charpy Impact, Notched | 0.6 J/cm? | 2.86 ft-lb/in? | ISO 179/1eA | |
Thermal Properties |
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| Melting Point | 250 ?C | 482 ?F | 10?C/min; ISO 11357-1/-3 | |
| Deflection Temperature at 1.8 MPa (264 psi) | 180 ?C | 356 ?F | ISO 75-1/-2 | |
Processing Properties |
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| Melt Temperature | 270 - 290 ?C | 518 - 554 ?F | ||
| Melt Temperature | 280 ?C | 536 ?F | Optimum | |
| Mold Temperature | Min 95 ?C | Min 203 ?F | ||
| Mold Temperature | 110 ?C | 230 ?F | Optimum | |
| Drying Temperature | 120 ?C | 248 ?F | ||
| Dry Time | 4 hour | 4 hour | Dehumidified Dryer | |
| Moisture Content | Max 0.02 % | Max 0.02 % | ||
Descriptive Properties |
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| Appearance | Black | |||
| Drying | Recommended | |||
| DuPont Product Category | Glass/Mineral Reinforced Resins | |||
| DuPont Product Category | Low Warp Resins | |||
| DuPont Product Category | Toughened Resins | |||
| Form | Pellets | |||
| Processing Method | Injection Molding | |||
| Region | Americas | |||
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