Wholesale high quality Black Silicon Carbide/carbofrax for precision casting Products Introduction Black silicon carbide is quartz sand, petroleum coke and wood chips as the main raw material, in the resistance furnace by high temperature smelting.Black silicon carbide has a Mohs hardness of 9.15 and a relatively high hardness. It is suitable for precision grinding of hard glass. Advantages (1) Special treated products get higher purity, better toughness, and better grinding effect (2) Good hardness,Corrosion resistance (3) Chemical washed and water washed good cleanness. (4) Higher purity and less impurities Chemical indicators SiC â?¥98% Fe2O3â?¤0.35% F.Câ?¤0.25% Physical indicators Specific gravity:3.2-3.25g/cm3 Bulk density:1.2-1.6g/cm3 Melting point:2600°C Maximum service temperature:1900°C Mohs hardness:9.15 microhardness:2940~3300kg/mm2 Coefficient of linear expansion:1.5-2 Available Sizes Grains 16#20# 22# 24# 30# 36# 46# 54# 60# 80# 100# 120# 150# 180# 220# Micropowder 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# Application 1.Coated the inner wall of water wheel, impeller, cylinder to provide abrasion resistance and prolong life. 2.Raw materials for grinding wheels and sandpaper 3.Resin grinding wheel,High temperature ceramic 4.Colored metal,iron and steel industry 5.Sandblasting derusting,stainless steel products, steel, steel pipe, steel Our advantages 1.Our products are of good quality. 2.Our products have competitive price. 3.We can customize special product models for you. Contact us Tel:+86-15890150757 Landline:+86-0371-6090-0379 Skype:15890150757