Carbon Electrodes
1.DIAMETERS AVAILABLE: DIAMETER FROM 500MM TO 1400MM.
2.STANDARD GRADES -NORMAL AND HIGH.
2.1).NORMAL GRADE
RESISTIVITY (UOM ): 45 MAX
BULK DENSITY(G/CM3 ): 1.55 MIN
BENDING STRENGTH (MPA ): 3.5 – 7.0
COMPRESSIVE STRENGTH (MPA): 20 MIN
C.T.E.(100 -600 C, 10 -6/C ): 3.2 – 4.8
ASH: 2.5% MAX
2.2). HIGH GRADE:
RESISTIVITY (UOM ): 38 MAX
BULK DENSITY(G/CM3 ): 1.58 MIN
BENDING STRENGTH (MPA ): 4.0 – 7.5
COMPRESSIVE STRENGTH (MPA): 20 MIN
C.T.E.(100 -600 C, 10 -6/C ): 3.0 – 4.6
ASH: 2.0% MAX
3. CURRENT CARRYING CAPACITIES:
3.1).FOR NORMAL GRADE:
DIA CAPACITY CURRENT DENSITY
(MM) (A) (A/cm2)
780 31500 6.6
800 33100 6.6
850 37400 6.6
870 38000 6.4
900 40600 6.4
920 42500 6.4
960 46300 6.4
1005 49900 6.3
1020 50600 6.2
1060 54600 6.2
1100 57900 6.1
1146 62800 6.1
1205 69500 6.1
1250 71100 5.8
1272 73700 5.8
1305 74900 5.6
1321 76600 5.6
1355 77700 5.4
1400 80000 5.2
3.2).FOR HIGH GRADE:
DIA CAPACITY CURRENT DENSITY
(MM) (A) (A/cm2)
780 36200 7.6
800 38100 7.6
850 43100 7.6
870 43900 7.4
900 47000 7.4
920 49100 7.4
960 53500 7.4
1005 57000 7.2
1020 57900 7.1
1060 62600 7.1
1100 66400 7.0
1146 72100 7.0
1205 79800 7.0
1250 82200 6.6
1272 85100 6.6
1305 86900 6.4
1321 88900 6.4
1355 89400 6.2
1400 92300 6.0
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