| About |
|---|
| Low temperature impact PBT. Automotive applications: underhood power distribution boxes and covers.&& |
| Product Description | |
|---|---|
| Supplier | SABIC |
| Generic | polybutylene terephthalate |
| Material Status | Commercial: Active |
| Features | low-temperature impact resistance |
| Availabilitys | North America |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| MECHANICAL | Nominal value | Unit | Test method |
| tensile strength | |||
| yield | 39.3 | MPa | ASTM D638 |
| Tensile strain | |||
| yield | 3.9 | % | ASTM D638 |
| Bending modulus | |||
| 50 mm span | 1790 | MPa | ASTM D790 |
| bending strength | |||
| Yield, 50 mm span | 56.5 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | ASTM D256 | ||
| -30℃ | 800 | J/m | ASTM D256 |
| 23℃ | 870 | J/m | ASTM D256 |
| Impact strength of cantilever beam notch | ASTM D4812 | ||
| -30℃ | 3200 | J/m | ASTM D4812 |
| 23℃ | 3200 | J/m | ASTM D4812 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed, 6.4 mm | 47.2 | ℃ | ASTM D648 |
| 0.45 MPa, unannealed, 6.4 mm | 98.9 | ℃ | ASTM D648 |
| PHYSICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Density | 1.22 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 250℃，5.0kg | 13 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| TD：3.2 mm | 2.4 to 2.7 | % | Internal Method |
| MD：3.2 mm | 2.4 to 2.7 | % | Internal Method |
| Water absorption rate | |||
| 24hr | 0.10 | % | ASTM D570 |
| Apparent viscosity of melt | 1250 | Pa·s | Internal Method |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 121 | °C | |
| Drying time | 3.0 to 4.0 | hr | |
| Drying time, maximum | 12 | hr | |
| Recommended maximum moisture content | 0.020 | % | |
| Recommended injection volume | 40 to 80 | % | |
| Barrel rear temperature | 232 to 249 | °C | |
| Barrel middle temperature | 238 to 254 | °C | |
| Barrel front temperature | 243 to 260 | °C | |
| Nozzle temperature | 238 to 254 | °C | |
| Processing (melt) temperature | 243 to 260 | °C | |
| Mold temperature | 49 to 77 | °C | |
| Back pressure | 0.345 to 0.689 | MPa | |
| Screw speed | 50 to 100 | rpm | |
| Vent depth | 0.013 to 0.025 | mm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Type I, 2.0 in/min |
| 3. 0.051 in/min |
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