| Item | Unit | RP | ||
| ≤Ø400 | ≥Ø450 | |||
| Electric Resisitivity | Electrode | µΩ•m | ≤8.5 | ≤9.0 |
| Nipple | ≤5.5 | ≤5.5 | ||
| Transverse Strength | Electrode | Mpa | ≥8.0 | ≥7.0 |
| Nipple | ≥16.0 | ≥16.0 | ||
| Young's Modulus | Electrode | Gpa | ≤9.3 | |
| Nipple | ≤14.0 | |||
| Bulk Desity | Electrode | g/cm³ | ≥1.54 | |
| Nipple | ≥1.70 | |||
| Coefficient of Thermal Expansion (100℃-600℃) | Electrode | 10-6℃ | ≤2.5 | |
| Nipple | ≤2.0 | |||
| Ash | % | ≤0.2 | ||
| Grade | Nominal Dia. | Current Load | Current Density | |
| in | mm | A | A/cm2 | |
| RP | 10 | 250 | 7000-10000 | 14-18 |
| 12 | 300 | 10000-13000 | 14-18 | |
| 14 | 350 | 13500-18000 | 14-18 | |
| 16 | 400 | 18000-23500 | 14-18 | |
| 18 | 450 | 22000-27000 | 13-17 | |
| 20 | 500 | 25000-32000 | 13-16 | |
| 22 | 550 | 31500-39000 | 13-16 | |
| 24 | 600 | 35000-41000 | 13-15 | |
|
Electrode Diameter |
IEC Code |
Nipple |
Socket |
Pitch |
|||
|
mm |
L. Dia. D1(mm) |
Length L1(mm) |
M. Dia. D2(mm) |
S. Dia. D3(mm) |
Depth L2(mm) |
mm |
|
|
250 |
155T3N |
155.58 |
220.10 |
151.36 |
147.15 |
116.00 |
8.47 |
|
300 |
177T3N |
177.16 |
270.90 |
172.95 |
168.73 |
141.50 |
|
|
350 |
215T3N |
215.90 |
304.80 |
211.69 |
207.47 |
158.40 |
|
|
400 |
215T3N |
215.90 |
304.80 |
211.69 |
207.47 |
158.40 |
|
|
400 |
241T3L |
241.30 |
338.70 |
237.09 |
232.87 |
175.30 |
|
|
450 |
241T3N |
241.30 |
338.70 |
237.09 |
232.87 |
175.30 |
|
|
450 |
273T3L |
273.05 |
355.60 |
268.84 |
264.62 |
183.80 |
|
|
500 |
273T3N |
273.05 |
355.60 |
268.84 |
264.62 |
183.80 |
|
|
500 |
298T3L |
298.45 |
372.60 |
294.24 |
290.02 |
192.20 |
|
|
550 |
298T3N |
298.45 |
372.60 |
294.24 |
290.02 |
192.20 |
|
|
Electrode Diameter |
IEC Code |
Nipple |
Socket |
Pitch |
|||
|
mm |
L. Dia. D1(mm) |
Length L1(mm) |
M.Dia. D2(mm) |
S.Dia. D3(mm) |
Depth L2(mm) |
mm |
|
|
250 |
152T4N |
152.40 |
190.50 |
149.24 |
146.08 |
101.30 |
6.35 |
|
300 |
177T4N |
177.80 |
215.90 |
174.64 |
171.48 |
114.00 |
|
|
350 |
203T4N |
203.20 |
254.00 |
200.04 |
196.88 |
133.00 |
|
|
400 |
222T4N |
222.25 |
304.80 |
219.09 |
215.93 |
158.40 |
|
|
400 |
222T4L |
222.25 |
355.60 |
219.09 |
215.93 |
183.80 |
|
|
450 |
241T4N |
241.30 |
304.80 |
238.14 |
234.98 |
158.40 |
|
|
450 |
241T4L |
241.30 |
355.60 |
238.14 |
234.98 |
183.80 |
|
|
500 |
269T4N |
269.88 |
355.60 |
266.72 |
263.56 |
183.80 |
|
|
500 |
269T4L |
269.88 |
457.20 |
266.72 |
263.56 |
234.60 |
|
|
550 |
298T4N |
298.45 |
355.60 |
295.29 |
292.13 |
183.80 |
|
|
550 |
298T4L |
298.45 |
457.20 |
295.29 |
292.13 |
234.60 |
|
|
600 |
317T4N |
317.50 |
355.60 |
314.34 |
311.18 |
183.80 |
|
|
600 |
317T4L |
317.50 |
457.20 |
314.34 |
311.18 |
234.60 |
|
|
700 |
374T4N |
374.65 |
457.20 |
371.49 |
368.33 |
234.60 |
|
|
700 |
374T4L |
374.65 |
558.80 |
371.49 |
368.33 |
285.40 |
|
|
Nominal Diameter |
Basic |
Allowance Range |
Nominal Length |
Allowance Range |
||
|
Min. |
Max. |
Min. |
Max. |
|||
|
250 |
254 |
251 |
256 |
1500 |
1400 |
1600 |
|
1800 |
1700 |
1900 |
||||
|
300 |
305 |
302 |
307 |
1500 |
1400 |
1600 |
|
1800 |
1700 |
1900 |
||||
|
350 |
355 |
352 |
357 |
1500 |
1400 |
1600 |
|
1800 |
1700 |
1900 |
||||
|
400 |
406 |
403 |
408 |
1800 |
1700 |
1900 |
|
2100 |
2000 |
2200 |
||||
|
450 |
457 |
454 |
460 |
1800 |
1700 |
1900 |
|
2100 |
2000 |
2200 |
||||
|
2400 |
2300 |
2500 |
||||
|
500 |
508 |
505 |
511 |
1800 |
1700 |
1900 |
|
2100 |
2000 |
2200 |
||||
|
2400 |
2300 |
2500 |
||||
|
550 |
559 |
556 |
562 |
1800 |
1700 |
1900 |
|
2100 |
2000 |
2200 |
||||
|
2400 |
2300 |
2500 |
||||
|
600 |
610 |
607 |
613 |
2100 |
2000 |
2200 |
|
2400 |
2300 |
2500 |
||||
|
2700 |
2600 |
2800 |
||||
|
700 |
711 |
708 |
714 |
2400 |
2300 |
2500 |
|
2700 |
2600 |
2800 |
||||
|
Recommended tightening torque |
|
|
Electorde Diameter |
Torque |
|
mm |
N.m |
|
300 |
900 |
|
350 |
1300 |
|
400 |
1550 |
|
450 |
1850 |
|
500 |
2400 |
|
550 |
2750 |
|
600 |
3800 |
|
700 |
5200 |