Trading
 
Trading Electrode Graphite
 

Technical Indicate of SSIT Graphite Electrode

Nominal Diameter
RP
HD
HP
UHP
mm
A
A/cm2
A
A/cm2
A
A/cm2
A
A/cm2
75
1000-1400
22-31
1300-2000
29-45
 
 
 
 
100
1500-2400
19-30
1800-3000
22-37
 
 
 
 
130
2200-3400
17-26
2800-4200
21-31
 
 
 
 
150
3000-4500
16-25
4000-5000
22-28
 
 
 
 
200
5000-6900
15-21
4800-9000
15-28
5500-9000
18-25
 
 
250
7000-10000
14-20
8000-12000-
16-24
8000-13000
18-25
 
 
300
10000-13000
14-18
11000-16000
15-22
13000-17400
17-24
15000-22000
20-30
350
13500-18000
14-18
15000-22000
15-22
17400-24000
17-24
20000-30000
20-30
400
18000-23500
14-18
20000-28000
15-22
21000-31000
16-24
25000-40000
19-30
450
22000-27000
13-17
24000-34000
15-21
25000-40000
15-24
32000-45000
19-27
500
25000-32000
13-16
28000-420000
13-20
30000-48000
15-24
38000-55000
18-27


 

Nomal Size of Taper Nipple
Nominal Diamete
IEC Code
Size (mm)
Four Circles of Threads per inch
Æ
 
D
L
200
122 T4N
122.24
177.80
250
152 T4N
152.40
190.50
300
177 T4N
177.80
215.90
350
203 T4N
203.20
254.00
400
222 T4N
222.25
304.80
400
222 T4L
222.25
355.60
450
241 T4N
241.30
304.80
450
241 T4L
241.30
355.60
500
269 T4N
269.88
355.60
500
269 T4L
269.88
457.20
600
317 T4N
317.50
355.60
600
317 T4L
317.50
457.20
Nominal Diameter
Three Circles of Threads per inch
250
155 T3N
155.57
220.00
300
177 T3N
177.16
270.90
350
215 T3N
215.90
304.80
400
241 T3N
241.30
338.70
450
273 T3N
273.05
355.60
500
298 T3N
298.45
372.60
Size and Permissible Variation of SSIT Graphite Electrode
Diameter (mm)
Length (mm)
Nominal Diameter
Actual Diameter
Nominal Length
Permissible Variation
mm
Inch
mm
Inch
Nominal Length
Undergauge Length
200
8
203+2
1600
60
+100
-275
250
10
254+2
1600 1800
60 72
+100
-2755
300
12
305+2
350
14
355+2
400
16
407+2
1800 2000
72 79
+100
275
450
18
458+2
500
20
509+2
600
24
610+2
Technical Indicate of SSIT Graphite Electrode
Item
Unit
RP
HD
HP
UHP
Ø250- Ø400mm
Ø450- Ø500mm
Ø250- Ø400mm
Ø450- Ø500mm
Ø250- Ø400mm
Ø450- Ø500mm
Ø250- Ø400mm
Ø450- Ø500mm
Resistivity
Electrode
μΩ.m
7.0-9.0
7.0-9.5
5.0-7.0
5.5-7.5
4.8-6.2
5.0-6.5
4.0-5.5
4.0-5.8
Nipple
4.0-5.8
3.0-4.5
3.0-4.5
3.0-4.0
Flexural Strength
Electrode
Mpa
7.0-9.0
7.0-10.0
10.0-15.0
10.0-15.0
10.5-16.0
Nipple
17.0-25.0
19.0-27.0
19.0-27.0
20.0-28.0
Elastic Modulus
Electrode
Gpa
6.0-9.3
8.0-12.0
8.0-112.0
9.0-14.0
Nipple
11.0-14.0
12.0-16.0
12.0-16.0
14.0-18.0
ash
%
01.-0.5
0.1-0.3
0.1-0.3
0.1-0.3
Bulk density
Electrode
g/cm3
1.54-1.62
1.64-1.72
1.64-1.72
1.7-1.75
Nipple
1.70-1.80
1.74-1.82
1.74-1.82
1.76-1.84
CTE
Electrode
10-6/ oC (100 - 1000 oC)
1.8-2.5
1.7-2.3
1.6-2.0
1.2-1.5
Nipple
1.5-2.2
1.3-1.6
1.3-1.6
1.3-1.6

 

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