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Welding Electrodes
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Materials for Electrodes
The list below shows rough standards for choosing electrode materials. Recommended electrode materials may change depending on the work piece surface treatment or dimensions.
Electrode Number
|
Alloy Components
|
Electric Conductivity (IACS%)
|
Applicable Metal
|
02 (Equivalent to RWMA-2)
|
Cu-Cr-Zr
|
Around 80%
|
Iron, Nickel, Chrome and their Alloys
|
03 (Equivalent to RWMA-3)
|
Cu-Ni-Be
|
Around 50%
|
Phosphor Bronze, Brass
|
00
|
Pure Mo
|
Around 39%
|
Dumet Wire, Tinned Copper Wire, Solder Plating Copper Wire
|
11 (Equivalent to RWMA-11)
|
Cu (30%) - W (70%)
|
Around 46%
|
Noble Metal
|
13 (Equivalent to RWMA-13)
|
Pure W
|
Around 33%
|
Copper
|
RWMA stands for Resistance Welder Manufacturer's Association
IACS stands for International Anneald Copper Standard
Applicable Weld Head
|
Electrode Number
|
Shape
|
Applicable Weld Head
|
Electrode Number
|
Shape
|
|
NA-122
NA-90
|
EH-062-02A
|
 |
NA-121
NA-122
NA-124
NA-143
NA-60A |
EO-250-02A
EO-250-03
|
 |
|
NA-121
NA-122
NA-143
NA-60A
|
EH-125-02A
EH-125-03
|
 |
NA-121
NA-122
NA-124
NA-143
NA-60A |
EH-250-02S
|
 |
|
NA-121
NA-122
NA-143
NA-60A |
EH-125-00A
EH-125-11A
EH-125-13A
|
 |
NA-121
NA-122
NA-124
NA-143
NA-60A |
EH-250-00S
EH-250-13S
|
 |
|
NA-121
NA-122
NA-124
NA-143
NA-60A |
EH-250-02A
EH-250-03
|
 |
NA-121
NA-122
NA-124
NA-143
NA-60A |
EO-250-00A
EO-250-11A
EO-250-13A
|
 |
|
NA-121
NA-122
NA-124
NA-143
NA-60A |
EH-250-00A
EH-250-11A
EH-250-13A
|
 |
NA-131
NA-132
NA-65
|
EP-711-00F
EP-711-02FA
|
 |
NA-124
|
EH-80-00
|
 |
NA-65
|
EP-711-00
EP-711-02FA
|
 |
|
NA-60C
NA-124
|
EH-60C
|
 |
NA-131
NA-132
NA-65
|
EP-406-00F
EP-406-02FA
|
 |
The Shape of Electrodes
Applicable Weld Head
|
Electrode Number
|
Shape
|
Applicable Weld Head
|
Electrode Number
|
Shape
|
NA-65
|
EP-406-02A
|
 |
NA-90
|
EP-507-00F
|
 |
NA-54A
|
EL-125-02A
EL-125-03
|
 |
NA-90
|
EP-507-00
EP-507-02A
|
 |
NA-54A
|
EL-125-00A
EL-125-11A
EL-125-13A
|
 |
NA-60A
|
EHC-250M4
|
 |
NA-54LA
|
EL-54LA
|
 |
NA-60A
|
WT-M25M4-00
WT-M25M4-02
|
 |
NA-72
|
EHC-F
|
 |
|
CC (6.4ø)
CC Alloy
|
 |
NA-72
|
EH-F-00
|
 |
|
CC (3.2ø)
CC Alloy |
 |
NA-72
|
EH-F-02
|
 |
|
Molybdenum Square Bar
|
 |