LEXAN™ Homopolymer 950A

About
Transparent, clear and colors, high viscosity, flame retardant with exceptional surface.&&

Product Description
SupplierSABIC
GenericPolycarbonate
Material StatusCommercial: Active
FeaturesGood surface appearance,High Viscosity,Flame Characteristics
AvailabilitysNorth America
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Densityg/cm³ASTM D792
Specific volume0.830cm³/gASTM D792
Melt Flow Rate
300℃,1.20kg7.0g/10minASTM D1238
Shrinkage rate
MD:3.2 mm0.50 to 0.70%Internal Method
Water absorption rate
24hr0.15%
Equilibrium, 23 ℃0.35%
Equilibrium, 100 ℃0.58%

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch
23℃640J/mASTM D256
Notched impact strength of cantilever beam
23℃3200J/mASTM D4812
Drop hammer impact
23℃169JASTM D3029
Tensile impact strength525kJ/m²ASTM D1822

THERMALNominal valueUnitTest method
Hot deformation temperature
0.45 MPa, unannealed, 6.4 mm137
1.8 MPa, unannealed, 6.4 mm132
Vicat Softening Temp151ASTM D1525 6
Linear coefficient of thermal expansion
MD:-40~95℃6.8E-51/℃ASTM E831
Thermal conductivity coefficient0.19W/m/KASTM C177
Relative temperature index130UL 746
Electrical performance130UL 746
Impact mechanical performance120UL 746

Electrical performanceNominal valueUnitTest method
Volume resistivity> 1.0E+17ohms·cmASTM D257
Dielectric strength
3.2 mm in air17kV/mmASTM D149
Dielectric constant
60 Hz3.01 
50 kHz3.01 
1 MHz2.96 
Dissipation factor
50 Hz9.0E-4 
60 Hz9.0E-4 
1 MHz0.010 
Arc resistancePLC 7 ASTM D495
Compared to the leakage tracing indexPLC 2 UL 746
High Arc Burning Index (HAI)PLC 3 UL 746
High voltage arc marking rate
HVTRPLC 3 UL 746
Hot wire ignition
HWIPLC 2 UL 746

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.50 mmV-2 
3.00 mmV-0 
Radiation Plate ListingTRUE 

optical performanceNominal valueUnitTest method
Refractive index1.586 ASTM D542
Transmittance
2540 µm85.0%ASTM D1003
Haze
2540 µm1.0%ASTM D1003

MECHANICALNominal valueUnitTest method
Rockwell hardness
M-level70 
R-level118 
tensile strength
yield62.0MPa
fracture55.0MPa
Tensile strain
yield7.0%
fracture90%
Bending modulus
50 mm span2240MPaASTM D790
bending strength
Yield, 50 mm span91.0MPaASTM D790
Taber abraser
1000 cycles, 1000 g, CS-17 wheels10.0mgASTM D1044

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120°C
Drying time3.0 to 4.0hr
Recommended maximum moisture content0.020%
Recommended injection volume40 to 60%
Barrel rear temperature290 to 310°C
Barrel middle temperature300 to 320°C
Barrel front temperature310 to 330°C
Nozzle temperature305 to 325°C
Processing (melt) temperature310 to 330°C
Mold temperature80 to 115°C
Back pressure0.300 to 0.700MPa
Screw speed40 to 70rpm
Vent depth0.025 to 0.076mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. Type I, 2.0 in/min
3. 0.051 in/min
4. Type S
5. Rate A (50°C/h), Loading 2 (50 N)
6. Tungsten Electrode
7. Surface
8. UL Tested
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