SILICON CARBIDE BLACK                                                                                       

                                                                TYPE REGULAR

Refractory Grades 

                                                             CHARACTERISTICS

Crystal                                                                    Hexagonal       

Chemical Nature                                                      Slightly Acid

Specific Gravity                                                        3.2 gms/cc

Bulk Density                                                             98/ft;

Hardness                                                                   Mohs 9.0

                                                                                 KNOOP 2500

Melting Point                                                             Dissociates at 2300 C

                                                   TYPICAL CHEMICAL ANALYSIS

           Silicon Carbide                                      SiC                               98.06%

Silicon                                                  Si                                  0.63

Silicon Dioxide(free)                              SiO2                             0.57

Carbon (free)                                        C                                  0.25

Iron                                                      Fe                                0.16

Aluminum                                             Al                                 0.23

Calcium                                                Ca                                0.05

Magnesia                                              Mg                               0.05

                                                                          SIZES

            Macro Grit--ANSI or FEPA sized 8-240 Grit

Micro Sized--FEPA F ,  JIS, ANSI--280-1600 Grit

06/02