Celanese Rynite® 940 BK505 PET-(GF+MD)40

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Celanese Rynite® 940 BK505 PET-(GF+MD)40
Categories:	Polymer; Thermoplastic; Polyester, TP; Polyethylene Terephthalate (PET); Polyethylene Terephthalate (PET), Glass/Mineral Reinforced
Material Notes:	40% Glass/Mineral Reinforced Polyethylene Terephthalate Former DuPont product acquired by Celanese in 2022.
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Physical Properties	Metric	English	Comments

Density	1.64 g/cc	0.0592 lb/in³	ISO 1183
Linear Mold Shrinkage, Flow	0.0020 cm/cm	0.0020 in/in	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.0070 cm/cm	0.0070 in/in	ISO 294-4, 2577

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	110 MPa	16000 psi	ISO 527-1/-2
Elongation at Break	1.8 %	1.8 %	ISO 527-1/-2
Tensile Modulus	12.5 GPa	1810 ksi	ISO 527-1/-2
Flexural Modulus	13.0 GPa	1890 ksi	ISO 178
Poissons Ratio	0.33	0.33
Charpy Impact Unnotched	3.50 J/cm² @Temperature -40.0 °C	16.7 ft-lb/in² @Temperature -40.0 °F	ISO 179/1eU
	3.50 J/cm² @Temperature 23.0 °C	16.7 ft-lb/in² @Temperature 73.4 °F	ISO 179/1eU
Charpy Impact, Notched	0.600 J/cm² @Temperature -40.0 °C	2.86 ft-lb/in² @Temperature -40.0 °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 Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm	IEC 62631-3-1
Surface Resistance	1.00e+14 ohm	1.00e+14 ohm	IEC 62631-3-2
Dielectric Constant	3.9 @Frequency 1e+6 Hz	3.9 @Frequency 1e+6 Hz	IEC 62631-2-1
	4.2 @Frequency 100 Hz	4.2 @Frequency 100 Hz	IEC 62631-2-1
Dielectric Strength	33.0 kV/mm	838 kV/in	IEC 60243-1
Dissipation Factor	0.0070 @Frequency 100 Hz	0.0070 @Frequency 100 Hz	IEC 62631-2-1
	0.0146 @Frequency 1e+6 Hz	0.0146 @Frequency 1e+6 Hz	IEC 62631-2-1
Comparative Tracking Index	250 V	250 V	IEC 60112

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	15.0 µm/m-°C	8.33 µin/in-°F	ISO 11359-1/-2
	6.00 µm/m-°C @Temperature 55.0 - 160 °C	3.33 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
	22.0 µm/m-°C @Temperature -40.0 - 23.0 °C	12.2 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	60.0 µm/m-°C	33.3 µin/in-°F	ISO 11359-1/-2
	54.0 µm/m-°C @Temperature -40.0 - 23.0 °C	30.0 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
	84.0 µm/m-°C @Temperature 55.0 - 160 °C	46.7 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
Melting Point	250 °C	482 °F	10°C/min; ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	241 °C	466 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	220 °C	428 °F	ISO 75-1/-2
Flammability, UL94	HB @Thickness 0.750 mm	HB @Thickness 0.0295 in	IEC 60695-11-10
Flame Spread	<= 80.0 mm/min @Thickness 1.00 mm	<= 3.15 in/min @Thickness 0.0394 in	ISO 3795 (FMVSS 302)

Processing Properties	Metric	English	Comments
Melt Temperature	285 °C	545 °F	Optimum, Injection
	280 - 300 °C	536 - 572 °F	Range, Injection
Mold Temperature	110 °C	230 °F	Optimum, Injection
	100 - 120 °C	212 - 248 °F	Injection
Ejection Temperature	170 °C	338 °F	Injection
Drying Temperature	120 °C	248 °F	Injection
Dry Time	4.00 - 6.00 hour	4.00 - 6.00 hour	Injection, Dehumidified Dryer
Moisture Content	<= 0.020 %	<= 0.020 %	Injection
Hold Pressure	>= 80.0 MPa	>= 11600 psi	Injection

Descriptive Properties
Additives	Release agent
Back pressure	As low as possible
Drying Recommended	yes		Injection
FMVSS Class	B		ISO 3795 (FMVSS 302)
Max. screw tangential speed (m/s)	0.2		Injection
Part Marking Code	>PET-(GF+MD)40<		ISO 11469
Polymer	PET-(GF+P)40
Processing Hold Pressure Time (s/mm)	4		Injection
Regional Availability	Asia Pacific
	North America
	South and Central America
Resin Identification	PET-(GF+MD)40		ISO 1043

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