Rynite® 940 BK505

About
40% Glass/Mineral Reinforced Polyethylene Terephthalate&&

Product Description
SupplierDuPont
GenericPET
Material StatusCommercial: Active
FeaturesHB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsInjection Molding

Technical Data
MECHANICALNominal valueUnitTest method
Tensile modulus12500MPaISO 527-2
tensile strength
fracture110MPaISO 527-2
Tensile strain
fracture1.8%ISO 527-2
Bending modulus13000MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-40℃6.0kJ/m²ISO 179/1eA
23℃7.0kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-40℃35kJ/m²ISO 179/1eU
23℃35kJ/m²ISO 179/1eU

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed220ISO 75-2/A
0.45 MPa, unannealed241ISO 75-2/B
Melting temperature250ISO 11357-3
Linear coefficient of thermal expansion
TD ISO 11359-2
MD ISO 11359-2
1.5E-5cm/cm/℃ISO 11359-2
-40 to 23 ℃2.2E-5cm/cm/℃ISO 11359-2
55 to 160 ℃6.0E-6cm/cm/℃ISO 11359-2
6.0E-5cm/cm/℃ISO 11359-2
-40 to 23 ℃5.4E-5cm/cm/℃ISO 11359-2
55 to 160 ℃8.4E-5cm/cm/℃ISO 11359-2

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+14ohmsIEC 60093
Volume resistivity1.0E+15ohms·cmIEC 60093
Dielectric strength33kV/mmIEC 60243-1
Relative permittivity IEC 60250
100 Hz4.20 IEC 60250
1 MHz3.90 IEC 60250
Dissipation factor IEC 60250
100 Hz7.0E-3 IEC 60250
1 MHz0.015 IEC 60250
Compared to the leakage tracing index250VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
0.75 mmHB UL 94
Burning rate
1 mm< 100mm/minISO 3795
Flammability level
0.75 mmHB IEC 60695-11-10, -20
FMVSS flame retardant ratingB FMVSS 302

PHYSICALNominal valueUnitTest method
Density1.64g/cm³ISO 1183
Shrinkage rate ISO 294-4
TD0.70%ISO 294-4
MD0.20%ISO 294-4
Ejection temperature170

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120°C
Drying time – hot air dryer4.0 to 6.0hr
Recommended maximum moisture content0.020%
Processing (melt) temperature280 to 300°C
Melt Temperature, Optimum285°C
Mold temperature100 to 120°C
Mold Temperature, Optimum110°C
Hold pressure80.0MPa
Back pressureAs low as possible 
Drying Recommendedyes 
Hold Pressure Time4.00s/mm
Maximum Screw Tangential Speed200mm/sec

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