OK Tigrod 347Si

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Bare, corrosion-resistant, chromium-nickel rods for welding austenitic chromium nickel alloys of the 18% Cr-8% Ni type. OK Tigrod 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.

Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded
75 J (56 ft-lb) -60 degC (-76 degF)
90 J (67 ft-lb) 20 degC (68 degF)

Typical Tensile Properties

ConditionElongationTensile Strength Yield Strength
As Welded35 %640 MPa (93 ksi)440 MPa (64 ksi)


Wire Electrode SFA/AWS A5.9 : ER347Si
Werkstoffnummer : ~1.4551
EN ISO 14343-A : W 19 9 Nb Si


Approvals NAKS/HAKC 1.6MM-2.4MM
VdTÜV 09736
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

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

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Cu Mn Mo Nb Ni P S Si
0.04 % 20 % 0.1 % 1.5 % 0.1 % 0.7 % 10 % 0.02 % 0.01 % 0.8 %
Typical Wire Composition %
0.04 % 19 % 0.10 % 1.7 % 0.1 % 0.60 % 9.8 % - - 0.7 %

How to purchase OK Tigrod 347Si

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Part Numbers and Accessories

Part Numbers : OK Tigrod 347Si