BMC 5307

About
BMC 5307 molding compound is a mineral filled, glass-fiber-reinforced polyester compound suitable for compression, transfer and stuffer injection molding. It is a medium impact material produced in extruded form for ease of handling. Other characteristics are good overall electrical properties and flame resistance. Typical applications include circuit breakers, transformer bobbins and motor end bells. BMC 5307 molding compound is produced in extruded form in a range on industrial colors. It is available in logs 12 inches in length and from 1″ to 2 ½” in diameter Within this range, smalle r diameters are supplied as multiple extrusions and weight tolerances are plus or minus5%, up to a maximum of plus or minus 15 grams.&&

Product Description
Generic热固性聚酯
Material StatusCommercial: Active
FeaturesGood Electrical Properties,Flame Characteristics
AvailabilitysNorth America

Technical Data
PHYSICALNominal valueUnitTest method
Density2.01g/cm³
Water absorption rate0.10%
Shrinkage rate0.22 – 0.40%

Electrical performanceNominal valueUnitTest method
Insulation strength13.8KV/mm
Arc resistance>= 185sec

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.59 mmV-0UL 94
3.17 mmV-0UL 94
6.35 mmV-0UL 94

Other performanceNominal valueUnitTest method
Compared to the leakage tracing index>= 600V

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch214 – 267J/m

MECHANICALNominal valueUnitTest method
30 – 45
tensile strength55.2 – 68.9MPa
bending strength110 – 138MPa
compressive strength152 – 179MPa

Process Conditions
injectionNominal valueUnitTest method
Injection temperature
Mold temperature138-177°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. Method A (Short-Time)
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