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Welding Electrode＆Resistance Weldability
Welding Electrode＆Resistance Weldability
This section introduces electrode materials and resistance weldability for resistance welders.
Selecting the electrode material to match the work material to be welded is one of the most important factors for good joining result.
Materials of Electrode
The list below shows rough standards to choose materials for an electrode, though it may be changed according to its 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 31% | 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 32% | copper |
| 20 | Cu-Al2O3 | around 80% | Battery Tab |
RWMA stands for The Resistance Welding Manufacturing Alliance.
IACS stands for International Annealed Copper Standard.
Shape of Electrode
| Electrode Number | Shape | Applicable Weld Head |
|---|---|---|
| EH-062-02A |  | NA-121 NA-141 |
| EH-125-02A EH-125-03 EH-125-20 |  | NA-121 NA-122 NA-123 NA-141 NA-142 NA-143 NA-60A |
| EH-125-00C EH-125-11A EH-125-13C |  | |
| CC Alloy (3.2φ) |  | |
| EP-711-00F EP-711-02F |  | NA-131 NA-132 NA-141 NA-142 |
| EP-406-00F EP-406-02FA |  | |
| Molybdenum Square Bar |  |
| Electrode Number | Shape | Applicable Weld Head |
|---|---|---|
| EH-250-02A EH-250-03 |  | NA-122 NA-123 NA-124 NA-142 NA-143 NA-60A NA-43 |
| EH-250-00C EH-250-11A EH-250-13C |  | |
| EO-250-02A EO-250-03 |  | |
| EO-250-00B EO-250-11A EO-250-13A |  | |
| EH-250-02S |  | |
| EH-250-00SB EH-250-13S |  | |
| CC Alloy (6.4φ) |  |
| Electrode Number | Shape | Applicable Weld Head |
|---|---|---|
| EH-80-00 |  | NA-124 |
| EH-60C |  | |
| EH-F-00 |  | NA-125 |
| EH-F-02 |  | |
| EH-200-00A |  | NA-126 |
| EH-200-02A |  | |
| EH-125-02E EH-125-20E |  | NA-141 NA-142 NA-143 |
| Electrode Number | Shape | Applicable Weld Head |
|---|---|---|
| EL-125-02A EL-125-03 |  | NA-54A |
| EL-125-00B EL-125-11A EL-125-13A |  | |
| EL-54LA |  | NA-54LA |
| EH-57A-02A |  | NA-57A |
Weldability by Resistance Welding for Each Material
This table is intended to be a guideline only, and it should not be interpreted as guaranteeing the welding result. Please feel free to consult with us as we will be pleased to sample test for you.
・RWMA for the electrode material indicates the specifications by Resistance Welding Manufacturing Association.
