Crastin® S620F20 BK851

About
Unreinforced Medium Viscosity Polybutylene Terephthalate&&

Product Description
SupplierDuPont
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesHB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsInjection Molding

Technical Data
MECHANICALNominal valueUnitTest method
Tensile modulus2600MPaISO 527-2
tensile strength
yield59.0MPaISO 527-2
Tensile strain
yield8.0%ISO 527-2
Nominal tensile fracture strain30%ISO 527-2
bending strength88.0MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength
23℃4.0kJ/m²ISO 179/1eA
Impact strength of cantilever beam notch
23℃4.0kJ/m²ISO 180-1A

THERMALNominal valueUnitTest method
Melting temperature225ISO 11357-3

Electrical performanceNominal valueUnitTest method
Compared to the leakage tracing index250VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
1.50 mmHB UL 94
3.00 mmHB UL 94
Flammability level IEC 60695-11-10, -20
1.5 mmHB IEC 60695-11-10, -20
3.0 mmHB IEC 60695-11-10, -20
FMVSS flame retardant ratingSE FMVSS 302

PHYSICALNominal valueUnitTest method
Density1.31g/cm³ISO 1183
Ejection temperature170

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120°C
Drying time – hot air dryer2.0 to 4.0hr
Recommended maximum moisture content0.040%
Processing (melt) temperature240 to 260°C
Melt Temperature, Optimum250°C
Mold temperature30 to 130°C
Mold Temperature, Optimum80°C
Hold pressure60.0MPa
Back pressureAs low as possible 
Drying Recommendedyes 
Hold Pressure Time4.00s/mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. 10°C/min
3. FMVSS 302
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