Harris 70S3 Mild Steel TIG Welding Rod 1/8" x 36" - 10 lbs.

By: Harris Products Group
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ER70S-3 mild steel GTAW (TIG) alloy is a general purpose welding alloy for fabrication of mild steel. It contains silicon and manganese as deoxidizers. Usually used with 75/25 argon/CO2 shielding gas or with higher contents of argon, such as 90/10. It can also be used with 100% CO2. Qualified to AWS A5.18 ER70S-3.


  • General purpose GTAW (TIG) welding rod for fabrication of mild steel
  • Contains silicon and manganese as deoxidizers
  • Usually used with 75/25 (Argon/Carbon Dioxide) shielding gas or with higher contents of Argon, such as 90/10.
  • Also used with 100% Carbon Dioxide
  • Conforms to AWS A5.18 ER70S-3