Crastin® SK608 BK509

About
45% Glass Reinforced 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 modulus14200MPaISO 527-2
tensile strength
fracture140MPaISO 527-2
Tensile strain
fracture2.0%ISO 527-2
Bending modulus13300MPaISO 178
bending strength210MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength
23℃10kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-30℃65kJ/m²ISO 179/1eU
23℃55kJ/m²ISO 179/1eU
Impact strength of cantilever beam notch ISO 180/1A
-30℃10kJ/m²ISO 180-1A
23℃10kJ/m²ISO 180-1A

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed207ISO 75-2/A
0.45 MPa, unannealed222ISO 75-2/B
Vicat Softening Temp
B50215ISO 306
Melting temperature225ISO 11357-3
Linear coefficient of thermal expansion
TD8.0E-51/℃ISO 11359-2
MD2.0E-51/℃ISO 11359-2

Electrical performanceNominal valueUnitTest method
Volume resistivity> 1.0E+15ohms·cmIEC 60093
Dielectric strength32kV/mmIEC 60243-1
Relative permittivity IEC 60250
100 Hz4.10 IEC 60250
1 MHz3.90 IEC 60250
Dissipation factor IEC 60250
100 Hz3.8E-3 IEC 60250
1 MHz0.013 IEC 60250
Compared to the leakage tracing index475VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Burning rate
1 mm< 100mm/minISO 3795
Flame retardant level UL 94
0.75 mmHB UL 94
1.50 mmHB UL 94
Flammability level IEC 60695-11-10, -20
0.75 mmHB IEC 60695-11-10, -20
1.5 mmHB IEC 60695-11-10, -20
Extreme oxygen index20%ISO 4589-2
FMVSS flame retardant ratingB FMVSS 302

Supplementary informationNominal valueUnitTest method
Emissions of organic compounds70.0µgC/gVDA 277
Odor3.00 VDA 270

PHYSICALNominal valueUnitTest method
Density1.66g/cm³ISO 1183
Shrinkage rate ISO 294-4
TD1.1%ISO 294-4
MD0.30%ISO 294-4
Water absorption rate
Saturation, 23 ℃, 2.00 mm0.30%ISO 62
Equilibrium, 23 ℃, 50% RH, 2.00 mm0.10%ISO 62
Melt density1.47g/cm³
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) temperature250 to 270°C
Melt Temperature, Optimum260°C
Mold temperature30 to 130°C
Mold Temperature, Optimum80°C
Hold pressure60.0MPa
Back pressureAs low as possible 
Drying Recommendedyes 
Hold Pressure Time3.00s/mm

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