RP Graphite electrode,HG Graphite electrode,UHP graphite electrode Resistivity: 4.8-6 3.5-5 Bending Strength:10-14 Mpa 20-24 MPa Young's Modulus: Electrode 9.0-13 Nipple 15-18 Bulk Density: Electrode 1.68-1.74 Nipple: 1.77-1.82 CTE: Electrode 1.1-1.4 Nipple 0.9-1.2