Tig Welding Wire rod - ER70S-6
ER70S-6 TIG welding rod is the general-purpose mild steel GTAW filler (AWS A5.18) — high in silicon and manganese for a clean, well-wetted 70,000 psi weld that tolerates light mill scale. Supplied in 36" cut lengths in 1/16", 3/32", and 1/8", welded under 100% argon on DCEN.
| AWS Classification | AWS A5.18 ER70S-6 |
| Tensile Strength | 70,000 psi (480 MPa) minimum |
| Shielding Gas / Polarity | 100% Argon · DCEN (straight polarity) |
| Form | 36" cut lengths — 1/16", 3/32", 1/8" |
Frequently Asked Questions
What amperage for ER70S-6 TIG rod?
As a guide: 70–110 A for 1/16", 100–160 A for 3/32", and 120–210 A for 1/8". Settings vary with material thickness and joint.
Is ER70S-6 the same for MIG and TIG?
The alloy is the same A5.18 chemistry, but TIG uses straight 36" cut rods under 100% argon, while MIG uses spooled wire under CO² or an Ar/CO² blend.
