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How to choose welding electrodes?

Choosing an electrode is determined by the requirements of the welding job. These include:

  • Tensile strength
  • Ductility
  • Corrosion resistance
  • Base metal
  • Weld position
  • Polarity
  • Current

There are light and heavy coated electrodes. Light coated electrodes have a light coating that is applied through brushing, spraying, dipping, washing, wiping, or tumbling. Heavy coated electrodes are coated by extrusion or dripping. There are three main kinds of heavy coatings: mineral, cellulose, or a combination of the two. Heavy coatings are used for welding cast iron, steels, and hard surfaces.

For reference data, please see the welding rod introduction on our website

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