Pro Grade High Purity Boron Nitride Ceramic Square Sheet 99 Percent for Heat Sinks and Lab Experiments 4mm Thick by 20mm Square with Superior Thermal Conductivity and Electrical Insulation

High-Purity Boron Nitride Square Sheet for Heat Sinks 4x20mm
✔️ 4 mm x 20 mm BN sheet, single sheet, 99% purity, high thermal conductivity

This premium boron nitride ceramic square sheet is designed for lab experiments and heat sink assemblies. It measures 4 mm thick by 20 mm square (0.16 in x 0.79 in), and is sold as a single sheet for precise prototyping.

Key specs at a glance include ultra-high purity BN material, excellent thermal management, and robust electrical insulation suitable for scientific and engineering work. Perfect for research benches, prototype builds, and metal or ceramic processing tests.

✅ 99% purity boron nitride ceramic with hexagonal structure
✅ excellent thermal conductivity and electrical insulation for electronics
✅ withstands high temperatures up to 2000°C with chemical stability
✅ very low thermal expansion 2-4 × 10⁻⁶/°C for dimensional stability
✅ ideal for sintering and casting of metals, ceramics, and rare earths

💡 What is a boron nitride ceramic sheet used for in high-temperature lab setups and heat sink projects?

It’s handy for providing stable insulation and efficient heat spread in demanding environments.

- high-temp insulation and heat spreading in electronics and lab gear - stable dimensions under rapid temperature changes with very low expansion - chemical resistance and compatibility with metals and ceramics