• BN ceramic substrate - high thermal conductivity boron nitride substrate
  • Boron nitride ceramic parts
  • Boron nitride ceramic parts
Boron Nitride Substrate

Boron Nitride (BN) is a high-performance advanced ceramic with outstanding high-temperature insulation, excellent machinability and superior chemical stability. It maintains reliable performance in extreme thermal environments and features non-wetting, non-stick properties with molten metals.

Our product range includes BN insulating rings, thermocouple protection sleeves, ceramic discs, plates and custom precision structural parts, widely applied in semiconductor manufacturing, high-temperature furnaces, thermal measurement and metallurgical industries. Custom CNC machining and precision polishing services are available per your requirements.

Advanced ceramics production flow chart
BN Ceramic Technical Data
Property Unit BN-B BN-C BN-D BN-E BN-S BN-S2 BN-52 BN-99
Chemical Composition – BN+ZrAl BN+SiC BN+ZrO₂ BN+AlN BN+Si₃N₄ BN+Si₃N₄ BN+Si₃N₄ BN
Color – White Greyish Green White Greyish Green Dark Grey Dark Grey Dark Grey White
Density g/cm³ 2.25-2.35 2.40-2.50 2.80-2.90 2.80-2.90 2.20-2.30 2.55-2.65 2.75-2.85 2.0
Volume Resistivity Ω·cm ≥10¹³ ≥10¹³ ≥10¹³ ≥10¹³ ≥10¹³ ≥10¹³ ≥10¹³ ≥10¹⁴
Max. Continuous Temperature in Air ℃ 1000 1000 1000 1000 1000 1000 1000 900
Max. Temperature in Vacuum ℃ 1800 1800 1800 1800 1800 1800 1800 1900
Max. Temperature in Inert Atmosphere ℃ 1800 1800 1800 1800 1800 1800 1800 2100
Flexural Strength MPa 180 85 115 120 180 220 320 35
Compressive Strength MPa 65 130 225 225 400 420 480 –
Coefficient of Thermal Expansion (25–1200℃) ×10⁻⁶/℃ 2.0 2.8 3.5 2.8 2.7 2.7 2.7 2.0
Thermal Conductivity (at 20℃) W/m·K 30 30 25 25 30 40 40 40
Typical Applications
Application BN-B BN-C BN-D BN-E BN-S BN-S2 BN-52 BN-99
Insulators for High Temperature Furnace ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Crucibles for Metal Evaporation ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Parts for Melting Metal or Alloy ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Casting Molds for Metal or Alloy ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
High Strength Ceramic Parts ✓ ✓ ✓ ✓ ✓ ✓ ✓ –
Transport Pipes / Nozzles for Melting Metal ✓ ✓ ✓ ✓ ✓ ✓ ✓ –

Production & Delivery
Production Capacity: Flexible production capacity for both standard and customized Advanced Ceramic components
Typical Lead Time: Sampling 7–12 days | Mass production 15–45 days, depending on product specifications and order volume
Shipping: FOB / EXW / CIF options available via sea, air, or express
Packaging: Export-standard protective packaging designed for safe international transportation

From technical drawings and samples to customized specifications, our engineering and production teams support customers throughout the process — from prototype development to stable mass production.

Industrial ceramic products packaging and shipping preparation