Electrode Material

We supply Class 2 Copper, Glidcop, Molybdenum, Copper-Tungsten, and Pure Tungsten electrode materials.

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Material Size

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Glidcop .125" diameter rod
Glidcop .250" diameter rod
Glidcop .123" x .123" square rod
Molybdenum .0625" diameter rod
Molybdenum .125" diameter rod
Molybdenum .1875" diameter rod
Molybdenum .250" diameter rod
Molybdenum .125" x .125" square rod
Class 2 Copper .125" diameter rod
Class 2 Copper .250" diameter rod
Class 2 Copper .125" x .125" square rod
Tungsten .0625" diameter rod
Tungsten .125" diameter rod

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  •  RWMA Class 1, Copper-Zirconium Alloy: suitable for welding aluminum alloys, magnesium alloys, coated materials, brass and bronzes.
  •  RWMA Class 2, Copper-Chromium Alloy: (Glidcop is often substituted for this alloy) This welding metal may be used to weld iron-base, nickel-base, cobalt-base, and chromium-base alloys. Class 2 electrodes are the most versatile general purpose alloys. AIT still builds many class 2 electrodes, but most customers are switching to Glidcop due to its superior qualities.
  •  RWMA Class 3, Copper-Cobalt-Beryllium Alloy: Having the same general applications as the RWMA Class 2 above, this metal sacrifices a small amount of conductivity for increased hardness. The characteristic hardness of Class 3 materials make them desirable for use as electrode-jigs and fixtures in high-production applications.
  •  RWMA Class 11, Copper-Tungsten Alloy: This material is used only as an insert in copper shanks. Generally, this class is used on precious metals and copper-base alloys. If sticking is evident, change to a Molybdenum or Class 13 electrode material.
  •  RWMA Class 13, Tungsten: Also used as an insert in a copper shank, Class 13 metals are used for copper, copper-base alloys and precious metals. The material is difficult to form into special shapes and fractures easily.
  •  RWMA Class 14, Molybdenum Alloys: These are the most popular electrode metals for welding copper-base and other highly conductive alloys. They minimize the sticking often encountered with copper-alloy electrodes.

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http://asturmadera.com/?p=1904 vantage opciones binarias ELECTRODE SELECTION GUIDE
The number which follows each material is the RWMA (Resistance Welder Manufacturers' Association) number of the electrode which would normally be placed against that material. For Example, when welding Alumel to Consil, a RWMA -2 electrode should be used on the Alumel side, and a RWMA -11 on the Consil side. Not all combinations have been tried successfully.
Material RWMA Electrode Type
Alumel -2
Aluminum -1
Aluminum Alloys -1
Beryllium Copper -2
Brass -2, -11
Brass, Tinned -14
Bronze -2
Cadmium Plating -1
Chromel -2
Consil -11
Constantin -2
Copel -2
Copper -14
Copper, Tinned -14
Dumet -2
Dumet, Gold Plated -2
Evenohm -14
Gold -11
Hastalloy -2
Inconel -2
Invar -2
Iridium -2
Iron -2
Karma -2
Kovar -2
Kovar, Gold Plated -2
Kulgrid -2
Magnesium -1
Manganin -2
Molybdenum -2
Nichrome -2
Nickel -2
Nickel Alloy -2
NiSpan C -2
Nioblum -2
Paliney 7 -2
Palladium -14
Platinum -2
Rhenium -2
Silver -11
Steel, Cold Rolled -2
Steel, Stainless -2
Tantalum -2
Titanium -2
Tungsten -2
Zinc -14