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Specialty Compounds RTP Company

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 PropertiesMetricEnglishComments
Density 1.52 g/cc0.0549 lb/in³DS; ISO 1183
Water Absorption 0.25 %
@Thickness 2.00 mm		0.25 %
@Thickness 0.0787 in		DS; Sim. to ISO 62
Moisture Absorption 0.100 %
@Thickness 2.00 mm		0.100 %
@Thickness 0.0787 in		DS; Sim. to ISO 62
Linear Mold Shrinkage, Flow 0.0050 cm/cm0.0050 in/inISO 294-4, 2577
Linear Mold Shrinkage, Transverse 0.013 cm/cm0.013 in/inISO 294-4, 2577
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength at Break 100 MPa14500 psiISO 527-1/-2
Elongation at Break 2.3 %2.3 %ISO 527-1/-2
Tensile Modulus 11.1 GPa1610 ksiISO 527-1/-2
Flexural Strength 164 MPa23800 psiISO 178
Flexural Modulus 11.2 GPa1620 ksiISO 178
Poissons Ratio 0.330.33
Izod Impact, Notched (ISO)  7.00 kJ/m²
@Temperature -30.0 °C		3.33 ft-lb/in²
@Temperature -22.0 °F		ISO 180/1A
 7.00 kJ/m²
@Temperature 23.0 °C		3.33 ft-lb/in²
@Temperature 73.4 °F		ISO 180/1A
Charpy Impact Unnotched  3.90 J/cm²
@Temperature 23.0 °C		18.6 ft-lb/in²
@Temperature 73.4 °F		ISO 179/1eU
 4.20 J/cm²
@Temperature -30.0 °C		20.0 ft-lb/in²
@Temperature -22.0 °F		ISO 179/1eU
Charpy Impact, Notched  0.640 J/cm²
@Temperature -30.0 °C		3.05 ft-lb/in²
@Temperature -22.0 °F		ISO 179/1eA
 0.700 J/cm²
@Temperature 23.0 °C		3.33 ft-lb/in²
@Temperature 73.4 °F		ISO 179/1eA
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm>= 1.00e+15 ohm-cmDS; IEC 62631-3-1
Surface Resistance >= 1.00e+15 ohm>= 1.00e+15 ohmDS; IEC 62631-3-2
Dielectric Strength 35.0 kV/mm889 kV/inIEC 60243-1
Comparative Tracking Index 600 V600 VIEC 60112
 >= 600 V>= 600 VPLC 0; UL 746A
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow  20.0 µm/m-°C
@Temperature 55.0 - 160 °C		11.1 µin/in-°F
@Temperature 131 - 320 °F		DS; ISO 11359-1/-2
 23.0 µm/m-°C
@Temperature -40.0 - 23.0 °C		12.8 µin/in-°F
@Temperature -40.0 - 73.4 °F		DS; ISO 11359-1/-2
 29.0 µm/m-°C
@Temperature 23.0 - 55.0 °C		16.1 µin/in-°F
@Temperature 73.4 - 131 °F		DS; ASTM E 831
CTE, linear, Transverse to Flow 66.0 µm/m-°C
@Temperature -40.0 - 23.0 °C		36.7 µin/in-°F
@Temperature -40.0 - 73.4 °F		DS; ISO 11359-1/-2
Melting Point 223 °C433 °F10°C/min; ISO 11357-1/-3
Deflection Temperature at 1.8 MPa (264 psi) 205 °C401 °FDS; ISO 75-1/-2
Glass Transition Temp, Tg 55.0 °C131 °F10°C/min; ISO 11357-1/-2
Flammability, UL94  V-0
@Thickness 0.750 mm		V-0
@Thickness 0.0295 in		IEC 60695-11-10
 V-0
@Thickness 1.50 mm		V-0
@Thickness 0.0591 in		IEC 60695-11-10
Oxygen Index 40 %40 %DS; ISO 4589-1/-2
Glow Wire Ignition Temperature  750 °C
@Thickness 0.750 mm		1380 °F
@Thickness 0.0295 in		IEC 60695-2-13
 750 °C
@Thickness 1.50 mm		1380 °F
@Thickness 0.0591 in		IEC 60695-2-13
 800 °C
@Thickness 3.00 mm		1470 °F
@Thickness 0.118 in		IEC 60695-2-13
 
Processing PropertiesMetricEnglishComments
Melt Temperature 250 °C482 °FOptimum, Injection
 240 - 260 °C464 - 500 °FRange, Injection
Mold Temperature 80.0 °C176 °FOptimum, Injection
 30.0 - 130 °C86.0 - 266 °FInjection
Ejection Temperature 170 °C338 °FInjection
Drying Temperature 120 °C248 °FInjection
Dry Time 2.00 - 4.00 hour2.00 - 4.00 hourInjection, Dehumidified Dryer
Moisture Content <= 0.040 %<= 0.040 %Injection
Hold Pressure >= 60.0 MPa>= 8700 psiInjection
 
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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PDSX5015o / 254322




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