求购:1.(SiC) 1) -200MESH 2)CHEMICAL SPECS ; SiC ; 88% MIN.FREE C ; 5% MAX.TOTAL C: 28-32%MOISTURE ; 1% MAX.CONDUCTIVITY(ELECTRICITY) ; 500 uMHOS MAX. 2.RE ; 碳化硅(SiC) 98% 1) 50-100MESH(0.3MM-0.15MM) 2)CHEMICAL SPECS ; SiC ; 97.9% MIN. FREE C ; 0.6% MAX. Al2O3 ; 0.35% MAX. TiO2 ; 0.15% MAX. SiO2 ; 1.40% MAX. Fe2O3 ; 0.20% MAX. 3.碳化硼(B4C) 1)SIZE -200MESH(85% MIN.) 2)CHEMICAL SPECS ; TOTAL B + C: 97% MIN.TOTAL B: 76.5% MIN.TOTAL C: 18.5% MIN.IRON ; 0.25% MAX.MOISTURE ; 1% MAX.