Hot-Press Grade Boron Carbide

Hot Press Grade Boron Carbide (B4C) powder is engineered for hot pressing, where heat and applied pressure densify the ceramic in a single firing. This material is typically coarser than the sinterable, submicron B4C powder and the added pressure from firing closes porosity. GNPGraystar holds strict particle size and chemistry parameters for optimum hot-pressing results and offers powders with or without a sintering aid.

Hot press B4C is available in a wide variety of sizes and purities. Contact our team with your application and we will work together to find the best solution.

Frequently Asked Questions

Pressure applied during firing closes porosity, so the powder does not need to be submicron. Finer sinterable powder is used when parts are densified without pressure

Yes. Hot press grade is available with or without a sintering aid, and as granulated powder.

Yes. Milling and chemistry parameters can be adjusted to your requirements.