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
| Original Document | Technical Datasheet-ASTM(English) | |||
| Features | High Stiffness/RigidityHigh ImpactHeat ResistanceHigh Flow | |||
| Processing | Injection | |||
| Compliance | FDA | |||
| Physical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
|---|---|---|---|
Density/Specific Gravity | *** g/cm³ | ASTM D792 | |
Melt Mass Flow Rate(MFR) | |||
200 ℃/5 Kg | *** g/10 min | ASTM D 1238 | |
Mold Shrinkage | |||
Flow | ***~*** % | ASTM D955 | |
| Mechanical | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Tensile Strength | |||
Yield | *** Mpa | ASTM D638 | Injection Molded |
Break | *** Mpa | ASTM D638 | Injection Molded |
Tensile Elongation | |||
Break | *** % | ASTM D638 | Injection Molded |
Flexural Modulus | *** Mpa | ASTM D790 | Injection Molded |
Flexural Strength | |||
- | *** Mpa | ASTM D790 | Injection Molded |
| Impact | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Izod Notched Impact Strengh | |||
23℃ (73℉) | *** J/m | ASTM D256 | Injection Molded |
| Thermal | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Heat Deflection Temperature(HDT) | |||
1.8 Mpa (264 psi)（18.6kg/cm²） | *** °C | ASTM D648 | Annealed |
1.8 Mpa (264 psi)（18.6kg/cm²） | *** °C | ASTM D648 | Unannealed |
Vicat Softening Temperature(VST) | *** °C | ASTM D1525 | |
Coefficient of Linear Thermal Expansion | |||
Flow | *** E-6 cm/cm/℃ | ASTM D 696 | |
| Flammability | Value/Unit(Sign in to View) | Test Standard | Test Condition |
Flame Rating | |||
HB | *** mm | UL94 |
The information presented on this datasheet was acquired by AjiEng.com from the producer of the material. AjiEng.com makes substantial efforts to assure the accuracy of this data. However, AjiEng.com assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.
