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DuPont Mobility and Materials Crastin® SK615SF BK591 PBT-GF30  (discontinued **)
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 30% Glass Fiber Filled

Material Notes: 30% Glass Reinforced Low Viscosity Laser Markable Polybutylene Terephthalate Developed for Super Fast Production

While this product line has been acquired by Celanese, this specific grade had been disconued while still a DuPont product so it is listed here as a discontinued DuPont product.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 1.53 g/ccISO 1183
Linear Mold Shrinkage, Flow 0.0030 cm/cmISO 294-4, 2577
Linear Mold Shrinkage, Transverse 0.011 cm/cmISO 294-4, 2577
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength at Break 145 MPaISO 527-1/-2
Elongation at Break 2.5 %ISO 527-1/-2
Tensile Modulus 9900 MPaISO 527-1/-2
Poissons Ratio 0.34ISO 527-1/-2
Charpy Impact, Notched 9.00 kJ/m²
@Temperature 23.0 °C
ISO 179/1eA
 
Thermal PropertiesOriginal ValueComments
Melting Point 222 °C10°C/min; ISO 11357-1/-3
Deflection Temperature at 1.8 MPa (264 psi) 205 °CISO 75-1/-2
Flammability, UL94 HB
@Thickness 1.50 mm
IEC 60695-11-10
 HB
@Thickness 3.00 mm
IEC 60695-11-10
Flame Spread 78.0 mm/min
@Thickness 1.00 mm
ISO 3795 (FMVSS 302)
 
Processing PropertiesOriginal ValueComments
Melt Temperature 240 °CInjection Optimum
 235 - 260 °CInjection
Mold Temperature 30.0 - 130 °CInjection
 80.0 °CInjection Optimum
Ejection Temperature 170 °CInjection
Drying Temperature 120 °CInjection
Dry Time 2.00 - 4.00 hourDehumidified Dryer; Injection
Moisture Content 0.040 %Injection
Hold Pressure 60.0 MPaInjection
 
Descriptive Properties
Back pressureAs low as possibleInjection
Drying RecommendedyesInjection
FMVSS ClassBISO 3795 (FMVSS 302)
Hold pressure time (s/mm)3Injection
Part Marking CodePBT-GF30ISO 11469
ProcessingInjection Molding
Regional AvailabilityEurope
 Near East/Africa
 North America
 South and Central America
Resin IdentificationPBT-GF30ISO 1043
Rheological Flow length410 mm80 MPa and 2 mm width/thickness

**
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