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ESAB

OK Autrod 347Si


A continuous, solid, corrosion-resistant, chromium-nickel wire for welding austenitic chromium-nickel alloys of the 18% Cr-8% Ni type. OK Autrod 347Si has good general corrosion resistance. The alloy is stabilised with niobium to improve resistance to the intergranular corrosion of the weld metal. The higher silicon content improves the welding properties such as wetting. Due to the niobium content, this alloy is recommended for use at higher temperatures.

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Specifications


Typical Tensile Properties

As welded
Elongation Tensile Strength Yield Strength
37 % 93 ksi 64 ksi
Tested at 400°C (752°F). As welded
Elongation Tensile Strength Yield Strength
26 % 67 ksi 49 ksi

Typical Charpy V-Notch Properties

As welded
Impact Value Testing Temperature
81 ft-lb 68 °F
59 ft-lb -76 °F

Typical Weld Metal Analysis %

MnMoCuCNbSiFerrite FNNiCr
1.7 %0.1 %0.10 %0.04 %0.60 %0.7 %7 %9.8 %19 %

Approvals: CE, EN 13479, DB, 43.039.13, NAKS/HAKC, 1.0MM-1.2MM, VdTÜV, 09734
Classifications: EN ISO 14343-A, G 19 9 Nb Si, Wire Electrode, SFA/AWS A5.9, ER347Si, Wire Electrode, Werkstoffnummer, ~1.4551, Wire Electrode

Approvals are based on factory location. Please contact ESAB for more information.


Alloy Type: Austenitic (with approx. 8 % ferrite) 19% Cr - 9% Ni - Nb
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