Property | Unit | Electrode Diameter |
HD 500 ~700 mm (14~18 inch) |
||
Bulk Density | g/cm3 | 1.64 ~ 1.72 |
Specific Resistance | μΩm | 5.8 ~ 7.3 |
Flexural Strength | MPa | 10.0 ~ 15.0 |
Elastic Modulus | GPa | 9.0 ~ 12.0 |
Coefficient of Thermal Expansion |
×10-6/°C | 1.9 ~ 2.3 |
Ash Content | % | Less than 0.2 |
Nominal Diameter |
Actual Diameter Specifications |
Nominal Length |
Actual Length Specifications for Normal Electrodes |
Actual Length Specifications for Short Electrodes |
||||
Max |
Min |
Max |
Min |
Max |
Min |
|||
mm |
(inch) |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
500 |
(20) |
511 |
505 |
1800 |
1900 |
1700 |
1700 |
1525 |
2100 |
2200 |
2000 |
2000 |
1825 |
||||
2400 |
2500 |
2300 |
2300 |
2125 |
||||
550 |
(22) |
562 |
556 |
2100 |
2300 |
1950 |
1950 |
1800 |
2400 |
2600 |
2250 |
2250 |
2100 |
||||
2700 |
2900 |
2550 |
2550 |
2400 |
||||
600 |
(24) |
613 |
607 |
2100 |
2300 |
1950 |
1950 |
1800 |
2400 |
2600 |
2250 |
2250 |
2100 |
||||
2700 |
2900 |
2550 |
2550 |
2400 |
||||
650 |
(26) |
663 |
659 |
2400 |
2600 |
2250 |
2250 |
2100 |
2700 |
2900 |
2550 |
2550 |
2400 |
||||
3000 |
3200 |
2850 |
2850 |
2700 |
||||
700 |
(28) |
714 |
710 |
2400 |
2600 |
2250 |
2250 |
2100 |
2700 |
2900 |
2550 |
2550 |
2400 |
||||
3000 |
3200 |
2850 |
2850 |
2700 |
||||
Notes: 1. A low spot may be accepted only if the diameter measured at the low sport is not more than 3 mm below the min diameter specification. 2. Each shipment contain 5% short electrodes may be accepted unless the acceptable percentage of short electrodes per delivery is decided by agreement between the supplier and user. |
Nominal Diameter of Electrodes |
IEC Designation of Joint |
Pin | Socket | |||||
Major Diameter | Pitch Diameter | Length | Minor Diameter | Pitch Diameter | Depth | |||
d1 | d2 | l1 | d3 | d4 | l2 | |||
mm | (inch) | Type T3 | mm | mm | mm | mm | mm | mm |
500 | (20) | 273T3N | 273.05 | 268.84 | 355.60 | 264.62 | 268.84 | 183.80 |
500 | (20) | 298T3N | 298.45 | 294.24 | 372.60 | 290.02 | 294.24 | 192.20 |
550 | (22) | 298T3N | 298.45 | 294.24 | 372.60 | 290.02 | 294.24 | 192.20 |
Notes:
|
Diameter of Electrodes |
IEC Designation of Joint |
Pin |
Socket |
|||||
Major Diameter |
Pitch Diameter |
Length |
Minor Diameter |
Pitch Diameter |
Depth |
|||
d1 |
d2 |
l1 |
d3 |
d4 |
l2 |
|||
mm |
(inch) |
Type T4 |
mm |
mm |
mm |
mm |
mm |
mm |
500 |
(20) |
269T4N |
269.88 |
266.72 |
355.60 |
263.56 |
266.72 |
183.80 |
500 |
(20) |
269T4L |
269.88 |
266.72 |
457.20 |
263.56 |
266.72 |
234.60 |
550 |
(22) |
298T4N |
298.45 |
295.29 |
355.60 |
292.13 |
295.29 |
183.80 |
550 |
(22) |
298T4L |
298.45 |
295.29 |
457.20 |
292.13 |
295.29 |
234.60 |
600 |
(24) |
317T4N |
317.50 |
314.34 |
355.60 |
311.18 |
314.34 |
183.80 |
600 |
(24) |
317T4L |
317.50 |
314.34 |
457.20 |
311.18 |
314.34 |
234.60 |
650 |
(26) |
355T4N |
355.60 |
352.44 |
457.20 |
349.28 |
352.44 |
234.60 |
650 |
(26) |
355T4L |
355.60 |
352.44 |
558.80 |
349.28 |
352.44 |
285.40 |
700 |
(28) |
374T4N |
374.65 |
371.49 |
457.20 |
368.33 |
371.49 |
234.60 |
700 |
(28) |
374T4L |
374.65 |
371.49 |
558.80 |
368.33 |
371.49 |
285.40 |
Notes: 1. Type T4 is 4 taper threads per inch, pitch 6.35 mm. 2. Pin pitch diameter is equal to socket pitch diameter (d2 = d4). 3. Socket minor diameter is equal to pitch diameter (d3 = d4 – 3.16). |
Dimension |
Tolerances for Sockets and Pins (tolerance in brackets are informative only) |
|
Min | Max | |
(mm) | (mm) | |
Length of pin l1 | (-4) | 0 |
Depth of socket l2 | -3 | (+10) |
Length of thread l3 | -2 | (+8) |
Recess of pin l4 | 0 | +10 |
Recess of socket l5 | 0 | +4 |
Pitch diameter of pin d2 | (-1) | 0 |
Pitch diameter of socket d4 | 0 | (+0.5) |
Graphite electrodes HD 350-450 mm are made of mixed petroleum coke and coal pitch, to be extruded, baked, impregnated, graphitized and machined for use as conductive material on EAF (Electric Arc Furnace) and LF (Ladle Furnace) for steelmaking.... ...Read More>>