Low shrinkage UL94-HB BMC for high precision internal electrical insulating components without V0 flame requirement.
UL94-HB precision electrical grade BMC. Low shrinkage for high tolerance internal insulating electrical parts without V0 flame requirement.
| Items | Test Standards | Unit | Values |
|---|---|---|---|
| Density | GB/T1463 | g/cm³ | 1.95 |
| Water Absorption | GB/T1462 | % | ≤0.2 |
| Shrinkage Rate | GB/T15568 | % | 0.15 |
| Glass Fiber Content | GB/T15568 | % | 12 |
| Molding temperature | ----- | ℃ | 150-170 |
| Heat Deflection Temperature (HDT) | GB/T1634 | ℃ | ≥200 |
| Barcol Hardness | ASTM D2583 | ℃ | ≥45 |
| Tensile Strength | GB/T1447 | MPa | ≥25 |
| Flexural Strength | GB/T1449 | MPa | ≥50 |
| Impact Strength | GB/T1451 | KJ/㎡ | ≥15 |
| Limiting Oxygen Index | GB/T 2406.2 | % | ≥20 |
| Flame Retardancy | UL-94 | Grade | HB |
Product Features and Performance
Stable 0.15% low shrinkage delivers superior dimensional accuracy, well suited for electrical parts with strict assembly tolerance requirements.
Reliable electrical insulation and voltage resistance performance meets working demands for general internal electrical components.
HDT ≥200 ℃ ensures stable structure under long term high temperature conditions; low water absorption resists deformation caused by humidity temperature fluctuation.
Balanced mechanical properties and high Barcol hardness bear regular loads with good scratch wear resistance.
Wide molding temperature window brings great process flexibility for compression molding & injection molding mass production. UL94-HB grade for applications without mandatory high flame retardant specifications.
Supported by in house BMC production lines for stable bulk supply; formula adjustment available for project specific requirements.

Applications
General electrical internal insulation supports with strict dimensional tolerance requirements, non-exposed insulating bases, small switch insulation fittings, electrical control module housings, internal structural parts of electricity meters, low-voltage electrical insulation supports, instrument insulation components and other electrical assemblies without strict flame retardant standards.



Manufacturing and Supply Support
LANTAI’s BMC product system is supported by established composite material production and molding capabilities. With 5 SMC/BMC production lines and 20 molding machines ranging from 315T to 2500T, LANTAI can support material development, sample validation, bulk supply, and molded-part cooperation. This manufacturing base helps buyers achieve efficient project execution and consistent long-term delivery.
From formulation development to bulk delivery, LANTAI’s BMC products are supported by laboratory capability, incoming material control, production process management, and final inspection. For buyers focused on material flow, curing behavior, specification stability, and batch consistency, this R&D and quality system provides reliable support for both initial validation and long-term sourcing.
FAQ