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TIG Wires

SUPERLINK TIG-309MO

AWS A5.9: ER309Mo EN ISO 14343-A: W 23 12 2 L

A precision-drawn, bright-annealed solid TIG wire for GTAW welding. ER309Mo type. Produces clean, smooth weld deposits with excellent positional welding characteristics. Suitable for all-position GTAW including root passes. Use pure Argon shielding gas.

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Technical specifications

Weld metal analysis, %
C Cr Ni Mo Mn
≤0.03%23.0–25.0%12.0–14.0%2.0–3.0%1.0–2.5%
Mechanical properties
Tensile strength ≥520 MPa
Yield strength ≥350 MPa
Elongation ≥28%
Sizes and current ranges
Diameter
1.6mm
2.0mm
2.4mm
3.2mm

Welding procedure & parameters

DCEN (electrode negative — tungsten positive). Shielding gas: 100% Argon. Back purge with Ar for root passes on pipe. Wire dia: 1.6, 2.0, 2.4, 3.2mm. Current: 50–180A depending on dia and position.

Typical applications

First layer overlay on CS for 316L cladding. Mo-bearing dissimilar welds.

Storage & handling notes

Do not touch wire surface with bare hands — contamination causes porosity. Store sealed in original packaging. Pure Argon only — no CO₂ or He unless specified.

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