E70S250 - Harris ER70S-2 Carbon Steel TIG Welding Rod - 3/32 in (2.5mm) - 10 lb Box

Name: Harris ER70S-2 Carbon Steel TIG Welding Rod - 3/32 in (2.5mm) - 10 lb Box
Brand: Harris
SKU: ER70S2-332
Price: 93.50 CAD
Availability: InStock

Packaging: 10lb tube

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SKU: ER70S2-332 Categories: Steel Mig and Tig Wires, Welding Wires and Electrodes

OVERVIEW

Achieve Flawless Welds with Harris ER70S-2

When precision and quality are non-negotiable, the Harris ER70S-2 Carbon Steel TIG Rod is the welder's choice for mild steel applications. Known for its "triple deoxidized" formula, this rod is a lifesaver when you are dealing with less-than-perfect base metals. If you've ever struggled with porosity caused by rust, mill scale, or dirty steel, this rod is designed to help. The added Aluminum, Titanium, and Zirconium work actively in the puddle to pull out impurities, leaving you with a clean, solid bead that passes X-ray inspection.

This 3/32" (2.5mm) rod is the go-to size for a wide range of material thicknesses. It is particularly famous among pipe welders for laying down the perfect root pass. The molten metal flows smoothly, giving you excellent control over the puddle and allowing for complete fusion without the frustration of burn-through or lack of penetration. Whether you are working on high-pressure pipe, repairing structural frames, or fabricating custom sheet metal parts, Harris ER70S-2 gives you the confidence that your welds will hold.

Packaged in a convenient 10 lb box, these 36-inch rods are easy to handle and store. The consistent diameter and clean finish mean you won't be fighting with your filler metal; you'll just be welding. It pairs perfectly with 100% Argon gas and runs on DCEN polarity. For welders who demand professional results and need a rod that is forgiving on base metal preparation while delivering high-strength performance, the Harris ER70S-2 is the industry standard solution.

Why Choose Triple Deoxidized?

Standard mild steel rods can sometimes leave you with pinholes if the steel isn't perfectly ground to shiny metal. The Harris ER70S-2 is formulated to fight back against those imperfections. While we always recommend cleaning your metal, this rod provides that extra layer of insurance, ensuring your time under the hood results in a stack of dimes you can be proud of.

Additional Information
Brand:Harris
AWS Spec:ER70S-2
Diameter:2.5mm (3/32")
Grade:S2
Packaging:10 lb Tube
Weld Process:TIG (GTAW)
Material Composition:Carbon Steel, Mild Steel
Rod Type:TIG, Cut Length
Length:36 in
Tensile Strength:78,000 psi
Yield Strength:60,000 psi
Polarity:DCEN
Deoxidizers:Triple Deoxidized (Al, Ti, Zr)
Packaging Description:10lb tube

INCLUDED

10 lb Box of Harris ER70S-2 Carbon Steel TIG Rods
Length: 36 inches
Diameter: 3/32" (2.5mm)

APPLICATIONS

Root pass welding on carbon steel pipes
Structural steel fabrication
Sheet metal applications
Repairs on mild and low alloy steels
Welding on rimmed or semi-killed steels
Maintenance and repair (MRO)
Automotive exhaust and frame repair

FAQ

ER70S-2 is triple deoxidized with Aluminum, Titanium, and Zirconium, making it excellent for porosity control on rusty or dirty steel and ideal for pipe root passes. ER70S-6 contains higher Silicon and Manganese for fluid wetting and is often preferred for general purpose MIG/TIG on cleaner steel.

For TIG welding (GTAW) with ER70S-2, use 100% Argon gas. This ensures a stable arc and prevents atmospheric contamination of the weld pool.

No, ER70S-2 is a carbon steel filler metal. Using it on stainless steel will result in contamination, loss of corrosion resistance, and weld failure. Use an ER308L or similar stainless rod instead.

Yes, ER70S-2 is widely considered the industry standard for the root pass of carbon steel pipe welding due to its excellent puddle control and defect-free deposits.

This rod is designed for use with Direct Current Straight Polarity (DCSP), also known as DCEN (Direct Current Electrode Negative).

The weld deposit typically exhibits a tensile strength of 78,000 psi and a yield strength of 60,000 psi, meeting AWS A5.18 requirements.

While ER70S-2 is designed to handle moderate rust and mill scale better than other rods, it is always best practice to clean the base metal as much as possible to ensure the highest quality weld.

The number of rods varies by diameter, but for 3/32" (2.5mm) rods, there are typically approximately 12-15 rods per pound, so a 10 lb box would contain roughly 120-150 rods.