Boron Nitride powder is the new innovation in aluminum extrusion industry. It acts as a release as well as lubricant agent between dummy block and billet. BN powder enhances the life of die and reduces the per ton extrusion cost. Application of Boron Nitride powder also improves the quality of the extrusion, as it eliminates any black marks. Any other type of release agent; like grease, will leave black mark on the extrusion.