Exaton 19.12.3.LSiMo (GTAW)

Exaton 19.12.3.LSiMo is a high‑performance filler metal for welding austenitic stainless steels (e.g., 316, 304, 321, 347) and high‑chromium steels up to 400 °C (750 °F). It is optimized for GMAW but also suitable for automated GTAW and plasma welding.

Key Features

• Developed from 80 years of specialty alloy expertise for corrosion‑resistant applications
• Consistent chemistry and mechanical properties batch‑to‑batch
• Innovative high Cr and Mo content for superior pitting resistance (CPT up to 39 °C)
• Low‑moisture SAW flux packaging (20‑25 kg drums) for reduced damage and cost

Specifications

• Alloy Type: Austenitic (≈9 % ferrite) – 19 % Cr, 12 % Ni, 3 % Mo, low C, high Si
• Shielding Gas: I1 (EN ISO 14175)
• Classifications: EN ISO 14343‑A : W 19 12 3 L Si, SFA/AWS A5.9 : 316LSi, Werkstoffnummer ~1.4430
• Approvals: CE (EN 13479), UKCA (EN 13479)
• Tensile (As Welded 20 °C): Yield 530 MPa, Tensile 655 MPa, Elongation 32 %
• Tensile (As Welded 400 °C): Yield 400 MPa, Tensile 505 MPa, Elongation 23 %
• Charpy Impact: 150 J at 20 °C, 50 J at –196 °C
• Typical Wire Composition %: C 0.013, Mn 1.8, Si 0.9, S 0.010, P 0.018, Ni 12, Cr 18.5, Mo 2.9, Cu 0.10, N 0.05, Nb 0.04, Ti 0.002, Co 0.05, FN 9

Applications

• Welding of stainless steel pipe and pressure vessels (316/316L/304/321/347)
• High‑temperature service up to 400 °C
• Submerged Arc Welding (SAW) and GMAW of corrosion‑critical components
• Automated GTAW and plasma welding processes