Description: 70S-2 Contains zirconium, titanium, and aluminum in addition to silicon and manganese. The alloy produces quality welds over most surface conditions and is recommended for TIG welding on all grades of steel.

Application: 70S-2 is suitable for repairs on a variety of mild and low alloy steel products such as small diameter piping, sheet metal applications, and root pass pipe welding.

Specifications: Conforms to AWS A5.18 Classification: 70S-2

Tig Welding Rod
Alloy Size
70S-2 1/16″ (0.063″)
70S-2 3/32″ (0.094″)
70S-2 1/8″ (0.125″)
70S-2 5/32″ (0.156″)


Weld Metal – Chemistry
C (max) Cr Ni Mo (max) Mn Si P (max) S (max) Cu (max)
Typical % 0.04 0.08 0.08 0.08 1.08 0.55 0.0003 0.005 0.2


Weld Metal – Mechanical Properties
Tensile Strength Yield Strength Elongation