| About |
|---|
| API 425 is a medium impact grade of polystyrene for injection molding. API 425 has good gloss, easy flow, and fast cycling properties, Application: API 425 is widely used in cosmetic packaging, food packaging, cassettes, caps, and closures.&& |
| Product Description | |
|---|---|
| Generic | PS (MIPS) |
| Material Status | Commercial: Active |
| Features | Good liquidity,Quick molding cycle |
| Availabilitys | North America |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.04 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 200℃，5.0kg | 8.0 | g/10min | ASTM D1238 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 3.2mm, injection molded | 53 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, annealed | 87.2 | ℃ | ASTM D648 |
| Vicat Softening Temp | 94.4 | ℃ | ASTM D1525 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | |||
| Level L | 48 | ASTM D785 | |
| Tensile modulus | 1930 | MPa | ASTM D638 |
| tensile strength | |||
| fracture | 33.1 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 24 | % | ASTM D638 |
| Bending modulus | 2100 | MPa | ASTM D790 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 71 to 82 | °C | |
| Drying time | 2.0 | hr | |
| Proposed maximum recycled material ratio | 30 | % | |
| Barrel rear temperature | 177 to 232 | °C | |
| Barrel front temperature | 191 to 274 | °C | |
| Mold temperature | -7 to 71 | °C | |
| Injection pressure | 34.5 to 276 | MPa | |
| Back pressure | 0.0689 to 3.45 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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