BMC 404

Category: Polyester, TS , Thermoset Polyester
Manufacturer: Bulk Molding Compounds, Inc.
Trademark: BMC
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: k1DT8f_BMC-404.pdf
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BMC 404 is a general purpose, mineral ?lled, glass ?ber-reinforced polyester compound suitable for compression, transfer and stuffer injection molding. It is of medium strength and meets Ford Speci?cation ESF-M3D121-A. This material has excellent electrical properties. As with all other BMCI compounds, this series can be supplied in logs, slugs or bulk. Typical applications are bobbins, electrical connectors, circuit breakers and as phenolic replacement.
General Information
Filler / Reinforcement
  • Glass Fiber
  • Mineral
Features
  • Good Electrical Properties
  • Good Strength
Uses
  • Appliances
  • Bobbins
  • Electrical Parts
Appearance
  • Natural Color
Forms
  • Pellets
Processing Method
  • Extrusion
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.80 to 1.90g/cm³ASTM D792
Molding Shrinkage - Flow 0.15 to 0.40%ASTM D955
Water Absorption (24 hr)0.12%ASTM D570
HardnessNominal ValueUnitTest Method
Barcol Hardness 45 to 55ASTM D2583
MechanicalNominal ValueUnitTest Method
Tensile Strength (Yield)37.9 to 55.2MPaASTM D638
Flexural Strength (Yield)103 to 124MPaASTM D790
Compressive Strength 124 to 145MPaASTM D695
ImpactNominal ValueUnitTest Method
Notched Izod Impact 270 to 480J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (1.8 MPa, Unannealed)260°CASTM D648
ElectricalNominal ValueUnitTest Method
Dielectric Strength 14 to 15kV/mmASTM D149
Arc Resistance (1.59 mm)> 180secASTM D495
Comparative Tracking Index (CTI) (1.59 mm)> 500VUL 746
FlammabilityNominal ValueUnitTest Method
Flame Rating (1.59 mm)V-0UL 94
ExtrusionNominal ValueUnit
Cylinder Zone 1 Temp. 138 to 166°C
Cylinder Zone 2 Temp. 138 to 166°C
Cylinder Zone 3 Temp. 138 to 166°C
Cylinder Zone 4 Temp. 138 to 166°C
Cylinder Zone 5 Temp. 138 to 166°C
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