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TIG Wires

SUPERLINK TIG-904L

AWS A5.9: ER385 (equivalent) EN ISO 14343-A: W 20 25 5 Cu N L

A precision-drawn, bright-annealed solid TIG wire for GTAW welding. ER904L 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 Cu Mn
≤0.02%19.0–21.0%24.0–26.0%4.0–5.0%1.2–2.0%1.0–2.5%
Mechanical properties
Tensile strength ≥490 MPa
Yield strength ≥220 MPa
Elongation ≥35%
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

GTAW of 904L super-austenitic SS. Highly corrosive environments: sulphuric acid, phosphoric acid, seawater, chloride-rich environments. Chemical processing, FGD scrubbers, desalination.

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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