Which SMAW rod is commonly referred to as the "code rod"?

The commonly referred "code rod" in Shielded Metal Arc Welding (SMAW) is the E7018 rod. This designation implies a specific type of low-hydrogen electrode that is suitable for welding high-strength steels.

E7018 is often used in structural applications and is particularly favored in the construction of welded code structures due to its excellent mechanical properties, including good strength and ductility, as well as its ability to produce welds with minimal slag inclusion and porosity. The '7' in the classification indicates a minimum tensile strength of 70,000 psi, and the '1' signifies that it can be used in all positions. The '8' denotes that it is a low-hydrogen electrode, which is critical for preventing weld defects in certain critical applications, especially those adhering to industry standards and codes.

In many applications requiring compliance with stringent welding codes, using the E7018 rod is essential because it meets various mechanical property requirements, making it a preferred choice among welders working on high-strength and structural projects.