Welding rods are used to join two or more base metals thus filling the gap and making the bond stronger. When it comes to arc welding, the most commonly known welding rods are 7014 and 7018. Therefore, it is very essential to know the comparison of 7014 vs 7018. Although, they both have minor differences still some welders often face difficulty in choosing the best one for their welding projects.
In a world of arc welding, there exists a vast range of electrodes. These electrodes are differentiated based on their different properties. Hence, each electrode possesses its unique characteristics and is designed for a particular purpose.
However, before we proceed further, you must know the basics for selecting an electrode. One should know how to read the electrodes coding which was proposed by the American Welding Society.
This coding classification system is based on various factors like tensile strength, type of current, welding position, flux coating, etc. Hence, for detailed information about different electrodes and their classification; click here
7014 vs 7018
To be honest, it is a bit difficult to differentiate between these two welding rods because they almost have the same features. Both 7014 and 7018 welding rods have the same tensile strength, arc characteristics, drag motion, and welding positions. So, what makes these rods different from each other? To get to know this, follow this article.
The selection of electrodes also depends upon the types of the arc produced. Arc characteristics of 7014 and 7018 welding rods are almost the same. Since they both generate a quiet smooth arc with minimal spatter.
Amperage also matters a lot at the time of selecting electrodes. While using DCEN, it is better to use a 7014 welding rod within a low current range of 100-145, depending upon the diameter of the electrode being used. However, if you are using AC; the amperage range should be between 110-160 for a 1/8″ diameter electrode. The amperage range will be similar for 7018 rods.
As mentioned above, 7014 is a fill-freeze iron powder-coated welding rod. It will not allow the penetration to the same extent as 7018 when used on DC. However, 7018 has a fast freezing potential as compared to 7014 welding rod. Therefore, 7018 rods offer an additional advantage to the welders to work in an awkward position.
7014 welding rods are ideal to be used on low-alloy and carbon steel. Thus, these welding rods are useful for projects that require a high deposition rate.
On the other hand, 7018 rods are specifically designed to weld steel that contains high carbon. 7018 welding rods can be used on high carbon, carbon steel, low alloy, or high-strength steel metals. 7014 rods are useful for projects that require a high deposition rate.
|Flux Coating||Titanium Iron Powder||Low Hydrogen Potassium, Iron Powder|
|Tensile Strength||70,000 PSI||70,000 PSI|
|Welding Position||F, V, H, OH||F, V, H, OH|
|Welding Current||AC, DC+, DC-||AC, DC+|
|Arc Characteristics||Smooth arc||Smooth arc|
|Slag Type||Thick||Thick, Fluid|
|Motion||Drag motion||Drag motion|
Welding positions: H= Horizontal, F=Flat, V=Vertical, OH= Overhead