OK Tigrod 2509

OK Tigrod 2509 are corrosion‑resistant "Super Duplex" TIG rods designed for welding austenitic‑ferritic stainless alloys (25% Cr, 7% Ni, 4% Mo, low C). They offer high intergranular, pitting and stress corrosion resistance for demanding environments.

Key Features

• Super Duplex composition for superior corrosion resistance
• Suitable for harsh industries such as pulp & paper, offshore, and gas
• Compatible with shielding gases I1, I3, N2 (EN ISO 14175)
• Available in multiple diameters and lengths (1.6‑2.4 mm, 500‑1000 mm)

Specifications

• Classifications: EN ISO 14343‑A : W 25 9 4 N L, SFA/AWS A5.9 : ER2594
• Approvals: CE EN 13479, UKCA EN 13479, VdTÜV 06593
• Alloy Type: Austenitic‑ferritic (25 % Cr - 10 % Ni - 4 % Mo - Low C)
• Shielding Gas: I1, I3, N2 (EN ISO 14175)
• Tensile (As Welded): Yield 660 MPa, Tensile 835 MPa, Elongation 37 %
• Charpy Impact (As Welded): -20 °C → 200 J, -50 °C → 180 J
• Typical Weld Metal Analysis (%): C 0.013, Mn 0.7, Si 0.4, S 0.002, P 0.016, Ni 9.3, Cr 24.9, Mo 3.8, Cu 0.07, N 0.23, PRE 41, FN WRC‑92 60, W 0.002
• Typical Wire Composition (%): C 0.01, Mn 0.4, Si 0.4, S 0.010, P 0.015, Ni 9.4, Cr 25.2, Mo 3.9, Cu 0.1, N 0.24, PRE 42, FN WRC‑92 50

Applications

• Pulp & paper processing equipment
• Offshore platforms
• Gas industry pipelines and heat exchangers
• Any service requiring high resistance to intergranular, pitting, and stress corrosion