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Specialty Compounds RTP Company

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Celanese Crastin® FR684NH1 BK591 PBT-GF25FR(40)
Categories: Polymer; Thermoplastic; Polyester, TP; Polybutylene Terephthalate (PBT); Polybutylene Terephthalate (PBT), 30% Glass Fiber Filled; Polybutylene Terephthalate (PBT), Glass Fiber Filled, Flame Retardant
Material Notes: 25% Glass Reinforced, Flame Retardant, Non-Halogenated, Polybutylene Terephthalate

Former DuPont product acquired by Celanese in 2022.
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 1.52 g/ccDS; ISO 1183
Water Absorption 0.25 %
@Thickness 2.00 mm		DS; Sim. to ISO 62
Moisture Absorption 0.100 %
@Thickness 2.00 mm		DS; Sim. to ISO 62
Linear Mold Shrinkage, Flow 0.0050 cm/cmISO 294-4, 2577
Linear Mold Shrinkage, Transverse 0.013 cm/cmISO 294-4, 2577
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength at Break 100 MPaISO 527-1/-2
Elongation at Break 2.3 %ISO 527-1/-2
Tensile Modulus 11100 MPaISO 527-1/-2
Flexural Strength 164 MPaISO 178
Flexural Modulus 11200 MPaISO 178
Poissons Ratio 0.33
Izod Impact, Notched (ISO) 7.00 kJ/m²
@Temperature -30.0 °C		ISO 180/1A
 7.00 kJ/m²
@Temperature 23.0 °C		ISO 180/1A
Charpy Impact Unnotched 39.0 kJ/m²
@Temperature 23.0 °C		ISO 179/1eU
 42.0 kJ/m²
@Temperature -30.0 °C		ISO 179/1eU
Charpy Impact, Notched 6.40 kJ/m²
@Temperature -30.0 °C		ISO 179/1eA
 7.00 kJ/m²
@Temperature 23.0 °C		ISO 179/1eA
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cmDS; IEC 62631-3-1
Surface Resistance >= 1.00e+15 ohmDS; IEC 62631-3-2
Dielectric Strength 35.0 kV/mmIEC 60243-1
Comparative Tracking Index 600 VIEC 60112
 >= 600 VPLC 0; UL 746A
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 20.0 µm/m-°C
@Temperature 55.0 - 160 °C		DS; ISO 11359-1/-2
 23.0 µm/m-°C
@Temperature -40.0 - 23.0 °C		DS; ISO 11359-1/-2
 29.0 µm/m-°C
@Temperature 23.0 - 55.0 °C		DS; ASTM E 831
CTE, linear, Transverse to Flow 66.0 µm/m-°C
@Temperature -40.0 - 23.0 °C		DS; ISO 11359-1/-2
Melting Point 223 °C10°C/min; ISO 11357-1/-3
Deflection Temperature at 1.8 MPa (264 psi) 205 °CDS; ISO 75-1/-2
Glass Transition Temp, Tg 55.0 °C10°C/min; ISO 11357-1/-2
Flammability, UL94 V-0
@Thickness 0.750 mm		IEC 60695-11-10
 V-0
@Thickness 1.50 mm		IEC 60695-11-10
Oxygen Index 40 %DS; ISO 4589-1/-2
Glow Wire Ignition Temperature 750 °C
@Thickness 0.750 mm		IEC 60695-2-13
 750 °C
@Thickness 1.50 mm		IEC 60695-2-13
 800 °C
@Thickness 3.00 mm		IEC 60695-2-13
 
Processing PropertiesOriginal ValueComments
Melt Temperature 250 °COptimum, Injection
 240 - 260 °CRange, Injection
Mold Temperature 80.0 °COptimum, Injection
 30.0 - 130 °CInjection
Ejection Temperature 170 °CInjection
Drying Temperature 120 °CInjection
Dry Time 2.00 - 4.00 hourInjection, Dehumidified Dryer
Moisture Content <= 0.040 %Injection
Hold Pressure >= 60.0 MPaInjection
 
Descriptive Properties
AdditivesFlame retardant
 Non-halogenated/Red phosphorous free flame retardant
Back pressureAs low as possible
Drying RecommendedyesInjection
Part Marking Code>PBT-GF25FR(40)<ISO 11469
PolymerPBT-GF25 FR(40)
Processing Hold Pressure Time (s/mm)3Injection
Resin IdentificationPBT-GF25FR(40)ISO 1043

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PDSX5015o / 254322




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