Exaton 19.12.3.L CRYO (GMAW)

Exaton 19.12.3.L CRYO is a high‑performance filler material for austenitic, ferritic and martensitic stainless steels used in extreme cryogenic applications down to –269 °C. It meets ASME Section VIII, Division 1, UHA 51 and is suited for welding tanks, dewars and transfer systems for LNG, LPG, liquid nitrogen, hydrogen and helium.

Key Features

• Optimized chemical composition for impact strength at cryogenic temperatures
• Low impurity levels for reduced hot cracking and excellent arc stability
• Compatible with plasma, overlay, hot‑wire TIG and mechanized TIG processes
• Available in 20–25 kg drums with moisture‑resistant SAW flux packaging

Specifications

• Alloy Type: Austenitic with ~2 % ferrite, 19 % Cr, 13 % Ni, 2 % Mo, low carbon
• Shielding Gas: I1, M12, M13 (EN ISO 14175)
• Wire Diameters & Parameters:
  • 1.0 mm: 60‑220 A, 15‑28 V, 4‑12 mm/min
  • 1.2 mm: 150‑260 A, 24‑29 V, 3‑10 mm/min
• Yield Strength: 400 MPa (as welded)
• Tensile Strength: 560 MPa (as welded)
• Elongation: 36 % (as welded)
• Charpy Impact: 92 J at –196 °C, 77 J at –269 °C (as welded)
• Typical Weld Metal Analysis (%): C 0.02, Mn 1.8, Si 0.4, S 0.002, P 0.014, Ni 12.9, Cr 18.4, Mo 2.3, Al 0.01, Cu 0.05, N 0.06, Nb 0.01, Ti 0.002, Co 0.03, FN 3
• Typical Wire Composition (%): C 0.02, Mn 1.8, Si 0.4, S 0.003, P 0.012, Ni 13.3, Cr 18.5, Mo 2.3, Al 0.01, Cu 0.06, N 0.06, Nb 0.01, Ti 0.005, Co 0.03, FN 2

Applications

• Cryogenic storage tanks and dewars
• LNG/LPG, liquid nitrogen, hydrogen and helium transport containers
• Overlay and plasma welding of stainless steel components
• High‑performance SAW welding in heavy‑duty environments