E70S230 - Harris ER70S-2 Carbon Steel TIG Welding Rod 1/16" x 36" (10 lb Tube)

Technical Overview of Harris ER70S-2 TIG Rod

The Harris ER70S-2 Carbon Steel TIG Welding Rod is a premium-grade filler metal designed for Gas Tungsten Arc Welding (GTAW) applications requiring high integrity and defect-free deposits. This solid wire conforms strictly to AWS A5.18 standards, designated as ER70S-2. The defining characteristic of this alloy is its "triple deoxidized" chemistry. Unlike standard ER70S-3 or ER70S-6 wires which primarily rely on Silicon and Manganese, the ER70S-2 formulation includes specific additions of Aluminum, Titanium, and Zirconium. These powerful deoxidizers act as scavengers within the molten weld pool, aggressively reacting with oxygen and nitrogen to prevent gas pockets and porosity.

This metallurgical profile makes the Harris ER70S-2 exceptionally capable when welding on rimmed, semi-killed, or killed steels. It is particularly engineered for single-pass welding operations where the base material may not be perfectly prepared, exhibiting tolerance for light rust, mill scale, and surface contaminants. In multi-pass applications, the deoxidizers continue to ensure a sound deposit, although care should be taken to avoid excessive alloy buildup in very thick sections.

Mechanically, the rod delivers robust performance with a typical tensile strength of 78,000 psi and a yield strength of 60,000 psi, ensuring that weld joints meet or exceed the strength requirements of mild steel base materials. The 1/16" (1.6mm) diameter offers precise control for thin-gauge sheet metal and small-diameter pipe and tubing. The rods are cut to a standard 36-inch length and packaged in a durable 10 lb tube to protect against moisture and atmospheric contamination during storage.

Industrial Specifications

Designed for use with Direct Current Straight Polarity (DCSP/DCEN), this filler metal provides deep penetration and a stable arc. It is the industry standard for critical root pass welding in pipe fabrication, where the integrity of the initial bead is paramount to the success of the entire joint. The rod is also suitable for general structural steel fabrication, repairs on low alloy steels, and automotive components.