Kingfa JH820

About
Kingfa JH820 is a Polycarbonate (PC) material. It is available in Asia Pacific or North America for injection molding. Important attributes of Kingfa JH820 are: Flame Rated Good Dimensional Stability Heat Resistant Weather Resistant Typical applications include: Electrical/Electronic Applications Appliances Household Applications Lighting Applications&&

Product Description
SupplierKingfa
GenericPolycarbonate
Material StatusCommercial: Active
FeaturesGood Rigidity,Good surface appearance,High impact resistance,V-2
AvailabilitysNorth America,Asia Pacific
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.20g/cm³ASTM D792
Shrinkage rate
MD:23℃0.50 to 0.70%ASTM D955
Water absorption rate
23℃,24hr0.12%ASTM D570

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch
23℃,3.2mm700J/mASTM D256

THERMALNominal valueUnitTest method
Hot deformation temperature ASTM D648
0.45 MPa, unannealed, 6.4 mm135ASTM D648
1.8 MPa, unannealed, 6.4 mm130ASTM D648

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+15ohmsASTM D257
Volume resistivity1.0E+16ohms·cmASTM D257
Dielectric strength
1.6 mm28kV/mmASTM D149

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
1.60 mmV-2 UL 94
3.20 mmV-2 UL 94

MECHANICALNominal valueUnitTest method
Rockwell hardness
R-level118 ASTM D785
tensile strength62.0MPaASTM D638
Tensile strain
fracture100%ASTM D638
Bending modulus2300MPaASTM D790
bending strength85.0MPaASTM D790

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120°C
Drying time4.0 to 6.0hr
Barrel rear temperature240 to 270°C
Barrel middle temperature260 to 280°C
Barrel front temperature270 to 290°C
Processing (melt) temperature250 to 280°C
Mold temperature60 to 80°C
Back pressure0.700 to 1.00MPa

Notes
1. Typical properties: these are not to be construed as specifications.
2. 23°C
3. 2.0 in/min
4. 0.079 in/min
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