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Information about graphite electrodes of the RP series
RP graphite electrodes
1. Specification
|
Features |
Electrode |
Nipple |
| Electrical strength(μΩ•m) | <8.5 | <6.5 |
| Bending limit (Mpa) | >8.5 | >15 |
| Elastic Modulus (Gpa) | <9.3 | <14 |
| Bulk density (g/cm3) | >1.54 | >1.69 |
| CTE 100-600℃ (X10-6) | <2.9 | <2.8 |
| Ash content (%) | <0.5 | <0.5 |
1.1. Standard sizes of RP electrodes
Permissible diameter (mm) |
Permissible length (mm) |
||||
Specified |
Max |
Min |
Specified length |
Accuracy, mm |
|
| 200 | 207 | 202 |
1600/1800/ |
+100 |
-100 |
| 250 | 257 | 252 | |||
| 300 | 307 | 302 | |||
| 350 | 357 | 352 | |||
| 400 | 409 | 403 | |||
| 450 | 460 | 454 | |||
| 500 | 511 | 505 | |||
| 550 | 562 | 556 | |||
| 600 | 613 | 607 | |||
1.2. Standard size of nipples
|
Electrode diameter |
Nipple |
Attaching hole |
Pitch |
||||||||
D |
L |
d2 |
L |
b2 |
H |
||||||
| 250 | 155.57 | 0-0.5 | 220.00 | 103.80 | 0-5 | <10 | 147.14 | +0.5 | 116.00 | +70 | 8.47 |
| 300 | 177.16 | 270.90 | 116.90 | 168.73 | 141.50 | ||||||
| 350 | 215.90 | 304.80 | 150.00 | 207.47 | 158.40 | ||||||
| 400 | 251.90 | 304.80 | 150.00 | 207.47 | 158.40 | ||||||
| 400 | 241.30 | 338.70 | 169.80 | 232.87 | 175.30 | ||||||
| 450 | 241.30 | 338.70 | 169.80 | 232.87 | 175.30 | ||||||
| 450 | 273.05 | 355.60 | 198.70 | 264.62 | 183.80 | ||||||
| 500 | 273.05 | 355.60 | 198.70 | 264.62 | 183.80 | ||||||
| 500 | 298.45 | 372.60 | 221.30 | 290.02 | 192.20 | ||||||
| 600 | 298.45 | 372.60 | 221.30 | 290.02 | 192.20 | ||||||
| 200 | 122.24 | 0-0.5 | 177.80 | 80.00 | 0-5 | <10 | 115.92 | +0.5 | 94.90 | +70 | 6.35 |
| 250 | 152.0 | 190.50 | 108.00 | 146.08 | 101.30 | ||||||
| 300 | 177.80 | 215.90 | 129.20 | 171.48 | 114.00 | ||||||
| 350 | 203.20 | 254.00 | 148.20 | 196.88 | 133.00 | ||||||
| 400 | 222.25 | 304.80 | 158.80 | 215.93 | 157.40 | ||||||
| 400 | 222.25 | 355.60 | 150.00 | 215.93 | 183.80 | ||||||
| 450 | 241.30 | 304.80 | 177.90 | 234.98 | 158.40 | ||||||
| 450 | 241.30 | 355.60 | 169.42 | 234.98 | 183.80 | ||||||
| 500 | 269.88 | 355.60 | 198.00 | 263.56 | 183.80 | ||||||
| 500 | 269.88 | 457.20 | 181.08 | 263.56 | 234.60 | ||||||
| 550 | 298.45 | 355.60 | 226.58 | 292.13 | 183.80 | ||||||
| 550 | 298.45 | 457.20 | 209.65 | 292.13 | 234.60 | ||||||
| 600 | 317.50 | 355.60 | 245.63 | 311.18 | 183.80 | ||||||
| 600 | 317.50 | 457.20 | 228.70 | 311.18 | 234.60 | ||||||
