Boron carbide, with black crystal powder form, is one of the hardest man-made materials. It has MOHS hardness of 9.36 and microscopic hardness 5,400 - 6,300kg/mm2, which is next to diamond. Its density is 2.52g/cbm and the melting point is 2,450oC.The bor
http://buy-or-sell.org/Chemicals/Sell-Boron-Carbide-MqVd0QPV/
没有评论:
发表评论