| About |
|---|
| STYRON™ 438 is a high-impact polystyrene resin with good flow, excellent stiffness, high heat and impact resistance. It is designed for injection molding applications. Main Characteristics: High heat Good balance of toughness and stiffness Complies with: U.S. FDA 21 CFR 177.1640 Consult the regulations for complete details. Applications: Printers Food containers Household goods&& |
| Product Description | |
|---|---|
| Supplier | Trinseo |
| Generic | PS (HIPS) |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Good flexibility,High impact resistance,Good liquidity,Food contact compliance,High Heat Resistance,HB |
| Availabilitys | Asia Pacific |
| 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 | 5.0 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD | 0.40 to 0.70 | % | ASTM D955 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | ASTM D638 | ||
| Yield, injection molding | 33.1 | MPa | ASTM D638 |
| Extreme, injection molding | 30.3 | MPa | ASTM D638 |
| Tensile strain | |||
| Fracture, injection molding | 40 | % | ASTM D638 |
| Bending modulus | |||
| injection molding | 2560 | MPa | ASTM D790 |
| bending strength | |||
| injection molding | 58.6 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃ | 91 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 1.8 MPa, unannealed | 77.2 | ℃ | ASTM D648 |
| 1.8 MPa, annealed | 98.9 | ℃ | ASTM D648 |
| Vicat Softening Temp | 105 | ℃ | ASTM D1525 |
| Linear coefficient of thermal expansion | |||
| MD | 7.6E-5 | 1/℃ | ASTM D696 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | |||
| 1.50 mm | HB | UL 94 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. This rating not intended to reflect hazards presented by this or any other material under actual fire conditions. |
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