Model Number

Q/YB 4088-921

We can supply grahite electrode of NP,HP, UHP grade as customer requested , with diameter from 50MM TO 600MM

NP Graphite Electrode diameter length and Size, Appearance and Tolerance　　Q/YB 4088-92 Nominal Diameter mm unit Length mm Lack ruler length mm Max Min The min part of black skin 75 77 74 72 1000±100 -255 100 102 99 97 1200±100 130 131 128 126 1200±100 -275 150 154 151 148 1600±100 200 204 201 198 1600±100 250 256 252 249 (1600.1800)±100 300 307 303 300 (1600.1800)±100 350 357 353 350 (1600.1800)±100 400 408 404 401 (1800.2000)±100 450 459 455 452 (1800.2000)±100 500 510 506 503 (1800.2000)±100

Properties of NP Graphite Electrode

Item Unit Nominal diameter（mm）mm 75-130 150-200 250-350 400-500 Electric Resistively ≤electrodes nipple μΩ?m 8.5 7.0 8.5 7.0 9.0 7.0 9.0 7.0 Banding strength ≤electrodes nipple MPa 11 13.5 11 13.5 9.5 13.5 8.5 13.5 Elastic meduluc ≤electrodes nipple Gpa 8.6 11.5 8.6 11.5 8.6 11.5 8.6 11.5 Bulk density ≤electrodes nipple g/cm3 1.62 1.68 1.58 1.67 1.56 1.72 1.56 1.72 Ash≤electrodes nipple % 0.4 0.4 0.4 0.4 CTE≤electrodes nipple 10-6L/°C 2.2 2.4 2.2 2.4 2.4 2.6 2.4 2.6