Graphite Electrode
Screw-thread Size
Diameter Size of Electrode Contact Size of Contact Hole Pitch
mm in D L a2 I a1 H mm
100
150
200
250
300
350
400
450
500 		4
6
8
10
12
14
16
18
20 		69.85
92.08
122.24
152.40
177.80
203.20
222.25
241.30
269.88 		-0.5 101.6
139.7
177.8
190.5
215.9
254.0
304.8
304.8
355.6
-1.0 40.3
56.2
80.0
108.0
129.2
148.2
158.8
177.9
198.0 		-3.0 6 63.53
85.76
115.92
146.08
171.48
196.88
215.93
234.98
263.56 		+0.5 53.80
72.85
91.90
101.30
114.00
133.00
158.40
158.40
183.40 		0¡«+7 6.35
250
300
350
400
450
500 		10
12
14
16
18
20 		155.58
177.17
215.90
241.30
273.05
298.45 		-0.5 220.1
270.9
304.8
338.6
355.6
327.5 		-1.0 103.8
116.9
150.0
169.8
198.7
221.3 		-3.0 10 147.14
168.73
207.47
232.87
264.62
290.02		 +0.5 113.05
138.45
155.40
172.30
180.80
189.25 		0¡«+7 8.47

Technical Requirement

Item Common Graphite Electrode High Power Graphite Electrode Ultrahigh Power Graphite Electrode
Unit nominal diameter nominal diameter
300-500(mm)		 nominal diameter
300-500(mm)
75¡«130 150¡«200 250¡«300 400¡«500
Excellent Grade Grade I Excellent Grade Grade I Excellent Grade Grade I Excellent Grade Grade I
specific resistance ¡Ü electrode contact ¦Ì¦¸m 8.5 10.0 9.0 11.0 9.0 11.0 9.0 11.0 7
6.5		 6.5
5.5
8.5 8.5 8.5 8.5
folding strength¡Ý electrode contact MPa 9.8
12.7		 9.8
12.7		 7.8
12.7		 6.4
12.7		 9.8
14.0
 10.0
15.0
elastic modulus¡Ü electrode contact GPa 9.3
13.7		 9.3
13.7		 9.3
13.7		 9.3
13.7		 12.0
14.0		 14.0
15.0
ash content¡Ü electrode contact % 0.5 0.5 0.5 0.5 0.3 0.3
volume density¡Ý electrode contact g/cm3 1.58
1.63		 1.52
1.63		 1.52
1.68		 1.52
1.68		 1.60
1.70		 1.65
1.70
thermal expansivity¡Ü electrode contact 10-6
1/¡ãC 		2.9
3.0		 2.9
3.0		 2.9
3.2		 2.9
3.2		 2.2
2.4		 1.4
1.6

Suggested Current Density

Common Graphite Electrode High Power Graphite Electrode
nominal diameter allowable current nominal diameter allowable current
mm A A/cm2 mm A A/cm2
200
250
300
350
400
450
500 		5000-6900
7000-10000
10000-13000
13500-18000
18000-23500
22000-27000
25000-32000
 15-21
14-20
14-18
14-18
14-18
13-17
13-16 		300
350
400
450
500		 13000-17000
17400-22000
21000-31000
25000-40000
30000-48000 		17-24
17-24
17-24
17-24
17-24

 

Special Graphite Products


¡÷Special-shaped non-standard graphite


¡÷graphite anode sintering mould


¡÷mechanical seals


¡÷high temperature corrosion resistant graphite wares


¡÷graphite bearing


Abrasive Cloth


¡÷Wuyi brand fissile dry grinding abrasive cloth


¡÷Great Wall brand fissile dry grinding abrasive cloth


¡÷Taihangshan brand fissile dry grinding abrasive cloth


¡÷Qianshuiting brand fissile waterproof abrasive paper