What Do The Numbers On Welding Rods Mean

What Do The Numbers On Welding Rods Mean - It is not often that you are considering the numbers on the rod when you're actually welding.

While you're holding the stinger, and then laying beads in the joint, in addition to the overall skill of welding and experience with the equipment there are a few things that affect the quality of your weld.

It all starts with the type of electrode you're employing.

What Do The Numbers On Welding Rods Mean

The other side of the electrode, there is something that appears like an inscription.

For the average person it may not seem to make sense.

However, for welders of any level, it's vital to have some knowledge of the different types of electrodes you'll use.

SMAW Electrodes

Welding electrodes, also known as welding rods are pieces of filler covered with flux.

They are designed to be employed to make welding SMAW (Shielded metal arc welding or Stick).

By using the constant current of the power source for welding the filler metal gets melting and then deposited into the base metal, while the flux is used to ensure the strength of the weld.

Here are a few of the most commonly used welding rods.

  • E6010 is an all-position rod that is used for pipe welding well-known for its tight arc
  • E6011 All-position rod that is the most popular option for maintenance work or in situations where metal has become filthy and/or rusted
  • E7018 All-position rod that is the most popular choice of ironworkers and erectors due its higher tensile strength as well as the versatility
  • E7024 is a rod which is only employed in flat and horizontal locations.

Sometimes referred to as jet rod.

What Do The Numbers On Welding Rods Mean

Produces a massive pool of water that is slowly cooling and is therefore only utilized in horizontal and flat locations.

The large amount of iron powder present in the flux helps in this process.

Here are one of the many welding rods.

We can see that they have a variety of characteristics that range from arc characteristics to the strength of tensile, and the place it is able to be placed to be welded.

What can the numbers provide us with information about the traits?

Let's look at.

What Do the Numbers on a Welding Rod Mean?

SMAW Electrodes

Let's use our electrode E7018 as our starting point to help us understand the system of numbering.

What Do The Numbers On Welding Rods Mean

  • E - This means that the rod is an electrode that carries current.
70. These 2 numbers represent 70,000 pounds per square inch (pounds for every square inch) of tensile force in the weld.
  • 1 - the letter '1 1' signifies that it is an all-location rod. 2.
This means that the rod is only able to be employed either in the horizontal or flat position.
  • 8 - The number 8 signifies that the rod contains low hydrogen potassium, with a powder coating.
This means that it is compatible with any polarity (DC+ DC-, DC- and AC).

The last number, "8 for Our E7018 rod, needs additional explanation.

This chart is detailed which will assist you in determining the type of coating identified by the number and also the polarity employed when welding:

FCAW Electrodes

Although it is true that there's a number on the welding rod but stick electrodes aren't the only kind of electrode that uses an organized system of number classification.

The Flux-cored Arc welding (FCAW) is a semi-automatic welding technique which utilizes wire feeder.

On the back of the wire that is used for welding there is an individual code for flux-cored welding.

Let's look at E71T-1C/M as an illustration.

E: This means that this wire an electrode that is carrying current.

7: The digit multiplied by 10,000 gives the total strength of tensile in the weld. In this instance it's 77,000 PSI.

1: The number 1 indicates that the wire is able to weld at any angle. "0" indicates that it can only be welded in horizontal or flat position.

T-1: This indicates that this electrode tubular flux-cored wire that has an ferrous flux.

C/M: A shielding gas could be carbon dioxide (C) or mixed (M) such as carbon dioxide/argon.

The classification of these wires, as a general, can be slightly more complex because they are self shielded and wire that needs gas shielding as well.

What is the best way to choose the right rod for welding?

It all depends on the specific application.

You must determine whether the arc's characteristics enable you to create the type of weld you want.

For instance E6010 is a great choice to weld the root of pipe joints.

It is also known as a "fast freeze rod.

The weld will be able to cool quickly so that it won't be able to escape from the gap in the root.

What size of a welding rod should I choose?

This is dependent on the extent to which you are working off blueprints.

If you're welding at home, a 332" E7018 rod is going to be an ideal choice.

However, be aware that certain fillet welding sizes are more easy to fabricate using specific size rods.

Where do you put your welding rods?

Some welding rods are able to stay at room temperature, such as E7024.

Other rods must be stored in a rod oven heated such as E7018. Review the specifications of the rod for the best way to be stored.


The numbers on a rod, or the wire roll will provide a great insight into the way it is to be welded.

This includes welding location along with polarity and the characteristics of an arc.

Most important, they are required to differentiate the different kinds of welding rods from one different.

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