BNH high temperature resistance ceramic is white solid material formed by hot press with high purity of platy hexagonal boron nitride powder. BNH ceramic is non-stick with most metal like Al, Ti, Mg, Zn, Cu. It is a non-toxic solid and easily machined into precision shape like crucible, nozzle, plate using standard carbide tooling. Features ◆High thermal conductivity ◆Low thermal expansion ◆Good thermal shock resistance ◆non-toxic ◆non-stick with metal ◆Microwave transparency ◆Easily machinedPurity>99.3% Density g/cm31.9±0.5Max operating Temperature850℃ in atmosphere2200℃ in inert gas2000℃ in vacuumHeat conductivity63W/mkcoefficient thermal expansion0.6(x10-6/K) RT-1500℃volume resistance1015(Ωcm)ColorWhiteBinder   B2O3We offer standard volume crucible 30ml, 40ml, 50ml, 100ml or customize as your requiring.SINYO is one of the leading and professional customized pure white hot press hexagonal boron nitride crucible nozzle for metallurgy manufacturers in China. Providing you with good after-sales service and quick delivery, we warmly welcome you to high quality and non-toxic boron nitride products at the most competitive price with us.