STYRON™ 637

About
STYRON™ 637 is a general purpose polystyrene designed for use in extrusion blending with impact polystyrene where its high strength can be used to maximum advantage. It is a high molecular weight material designed for extrusion blending. Its high strength makes it ideally suited for packaging applications. Applications: Injection molded packages Packaging foam extrusion Injection molded containers Complies with: Europe REGULATION (EC)10/2011 U.S. FDA 21 CFR 177.1640 Consult the regulations for complete details.&&

Product Description
SupplierTrinseo
GenericPS (GPPS)
Material StatusCommercial: Active
FeaturesHigh impact resistance,Good Dimensional Stability,Insulation,HB
AvailabilitysNorth America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density1.05g/cm³ISO 1183
Density1.05g/cm³ISO 1183-2
Apparent density0.60g/cm³ISO 60
Melt Flow Rate
200℃,5.0kg2.5g/10minISO 1133
Melt Volume Rate
200℃,5 kg2.50cm³/10minISO 1133
Water absorption rate
saturated0.0%ISO 62-2
Viscosity value116cm³/gISO 307, 1157, 1628 2

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, annealed90.0ISO 75-2/A
1.8 MPa75.0ISO 75-2 2
0.45 MPa, annealed93.0ISO 75-2/B
0.45 MPa93.0ISO 75-2 2
Vicat Softening Temp 
B5092.0ISO 306 2
97.0ISO 306/A120
B5092.0ISO 306
Linear coefficient of thermal expansion
TD7.0E-51/℃ISO 11359-2 2
MD8.0E-51/℃ISO 11359-2 2

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+13ohmsIEC 60093 2
Volume resistivity> 1.0E+17ohms·cmIEC 60093 2
Dielectric strength140kV/mmIEC 60243-1 2
Dielectric constant
1 MHz2.50 ASTM D150
Relative permittivity
100 Hz2.50 IEC 60250 2
1 MHz2.50 IEC 60250 2
Dissipation factor
100 Hz9.0E-5 IEC 60250 2
1 MHz6.0E-5 ASTM D150
1 MHz6.0E-5 IEC 60250 2

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.50 mmHB UL 94

MECHANICALNominal valueUnitTest method
Tensile modulus3300MPaISO 527-2 2
tensile strength
yield48.0MPaISO 527-2 2
yield55.0MPaISO 527-2/5
Tensile strain
fracture2.0%ISO 527-2/5
yield2.0%ISO 527-2 2
Nominal strain at break3.0%ISO 527-2 2
Bending modulus3500MPaISO 178
bending strength80.0MPaISO 178
Rockwell hardness
R-level105 ISO 2039-2
Ball hardness150MPaISO 2039-1

Notes
1. Typical properties: these are not to be construed as specifications.
2. Tested in accordance with ISO 10350. 23°C/50%r.h. unless otherwise noted.
3. This rating not intended to reflect hazards presented by this or any other material under actual fire conditions.
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