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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.

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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 NumberAlloy ComponentsElectric Conductivity
(IACS%)
Applicable Metal
02 (equivalent to RWMA-2)Cu-Cr-Zraround 80%iron, nickel, chrome and their alloys
03 (equivalent to RWMA-3)Cu-Ni-Bearound 50%phosphor bronze, brass
00pure Moaround 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 Waround 32%copper
20Cu-Al2O3around 80%Battery Tab

RWMA stands for The Resistance Welding Manufacturing Alliance.
IACS stands for International Annealed Copper Standard.

Shape of Electrode

Electrode NumberShapeApplicable Weld Head
EH-062-02AImage:EH-062 ShapeNA-121
NA-141
EH-125-02A
EH-125-03
EH-125-20
Image:EH-125 ShapeNA-121
NA-122
NA-123
NA-141
NA-142
NA-143
NA-60A
EH-125-00C
EH-125-11A
EH-125-13C
Image:EH-125 Shape
CC Alloy (3.2φ)Image:CC Alloy (3.2φ) Shape
EP-711-00F
EP-711-02F
Image:EP-711 ShapeNA-131
NA-132
NA-141
NA-142
EP-406-00F
EP-406-02FA
Image:EP-406 Shape
Molybdenum Square BarImage:Molybdenum Square Bar Shape
Electrode NumberShapeApplicable Weld Head
EH-250-02A
EH-250-03
Image:EH-250 ShapeNA-122
NA-123
NA-124
NA-142
NA-143
NA-60A
NA-43
EH-250-00C
EH-250-11A
EH-250-13C
Image:EH-250 Shape
EO-250-02A
EO-250-03
Image:EO-250 Shape
EO-250-00B
EO-250-11A
EO-250-13A
Image:EO-250 Shape
EH-250-02SImage:EH-250 Shape
EH-250-00SB
EH-250-13S
Image:EH-250 Shape
CC Alloy (6.4φ)Image:CC Alloy (6.4φ) Shape
Electrode NumberShapeApplicable Weld Head
EH-80-00Image:EH-80 ShapeNA-124
EH-60CImage:EH-60C Shape
EH-F-00Image:EH-F ShapeNA-125
EH-F-02Image:EH-F Shape
EH-200-00A図:EH-200-00A形状NA-126
EH-200-02A図:EH-200-02A形状
EH-125-02E
EH-125-20E
Image:EH-125 ShapeNA-141
NA-142
NA-143

Electrode NumberShapeApplicable Weld Head
EL-125-02A
EL-125-03
Image:EL-125 ShapeNA-54A
EL-125-00B
EL-125-11A
EL-125-13A
Image:EL-125 Shape
EL-54LAImage:EL-54LA ShapeNA-54LA
EH-57A-02AImage:EH-57A ShapeNA-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.

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