A Complete Guide to Welding Electrodes: Different Types & Uses

Published on 13 January 2025

6 min

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Welding is a crucial process across various industries that impacts the longevity and strength of the final products. The heart of the welding process is a welding electrode. Choosing the right welding electrode can be said to be a substantial decision.

Let us explore various types of electrodes, their uses, and key considerations so you can select the one that best fits your needs. 

What is a welding electrode? 

In simple terms, a welding electrode is a metallic rod or wire that conducts currents from the welding machine to the workpiece. It melts to form the weld. Apart from this, a welding rod can also serve as filler material that joins two pieces of metal together.


An electrode can be a consumable or a non-consumable depending on the welding process. Consumable electrodes melt during the process to provide filler materials. On the other hand, non-consumable electrodes don’t melt but can still conduct electricity required to create a weld.


The importance of choosing the correct electrode 

Some of the key reasons why choosing the right welding electrode is necessary are:

1. Welding Position: Depending on their designs, some welding electrodes are more suitable for flat positions whereas some are more suitable for overhead or vertical welding. 

2. Base material: The material composition you are welding will affect the choice of electrode. For instance, aluminium welding rods are designed specifically for joining aluminium materials.

3. Required Weld Strength: Different electrodes have different tensile strengths. Their tensile strength determines the strength of the finished weld.

4. Environmental Conditions: Environmental conditions can affect the welding. For example, a weld in a damp area has to be water-resistant.

Using the wrong type of electrode can lead to weaker welds, defects in welds, or even safety hazards.

Some common types of welding electrodes 

Shielded Metal Arc Welding (SMAW) Electrodes 

SMAW electrodes are also known as stick electrodes. They are popular for their versatility and easy-to-use quality. They are great options for fabrication, maintenance and repair work.


Common types of SMAW electrodes include:

a. E6010: Used for deep penetration, especially in rusty and dirty metals.

b. E6013: A good choice for cleaner metals. They provide a smooth and easy arc.

c. E7018: It has high tensile strength and low hydrogen content. This makes it the top choice for structural welding projects.

Tungsten Inert Gas (TIG) Electrodes

This non-consumable electrode is made from tungsten. It is typically used in precision welding and produces clean and high-quality welds. TIG welding needs highly skilled labour.

Metal Inert Gas (MIG) Electrodes

MIG electrodes are consumable and fed through a welding gun. It is fast and efficient, and mostly used for fabrications and automotive repairs. 


Submerged Arc Welding (SAW) Electrodes 

SAW electrodes are used in environments where large scale productions are done, such as shipbuilding. They are used in a continuously fed wire and create a clean weld perfect for thick materials.

 

At D&H Sécheron, we believe in making things that last and serve the purpose behind their making to the best level. A welding electrode is a crucial element in this. Selecting the right welding electrode whether it's for a stick welding machine or TIG welding requires careful consideration. You can connect with our experts for specialised guidance and support for your welding projects to be a success! 

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