High carbon Isotropic Graphite Blocks Large sizes, small sizes, or specially manufacture as requested ISO 9002 High density Manufacturer of Graphite Block, Rod, Round, Bar, Crucible, shaft &rotors. GradeAverage Grain size(mm)Min. Density(g/cm3)Specific Resistance(uq.m)Compressive Strength(Mpa)Flexural Strength(Mpa)Ash(ppm)CTE(×10-6/°C)Elastic ModulusGpaShore HardnessZI-1B0.0221.8511-1380405004. ...