OK Tubrod 15.20

OK Tubrod 15.20 is a gas‑shielded flux‑cored welding wire designed for 1% Cr, 0.5% Mo creep‑resisting low‑alloy steels using M21 shielding gas.

Key Features

• Flat welds with deep penetration and high deposition rates.
• Up to 3× productivity versus stick welding and 2.5× versus MIG.
• Low diffusible hydrogen (H5) for demanding applications.
• Suitable for structural steel, heavy equipment, bridges, offshore rigs, and more.

Specifications

• Classifications: SFA/AWS A5.29 : E81T5-B2M H4
• Welding Current: DC‑
• Diffusible Hydrogen: < 4 ml/100g
• Alloy Type: Creep resisting low alloy steel (1% Cr, 0.5% Mo)
• Shielding Gas: M21 (EN ISO 14175)
• Yield Strength: 570 MPa (PWHT 1 h 690 °C)
• Tensile Strength: 670 MPa
• Elongation: 22 %
• Typical Weld Metal Analysis (%): C 0.05, Mn 1.02, Si 0.53, Cr 1.35, Mo 0.60
• Deposition Data (1.2 mm): 120‑300 A, 16‑32 V, 4.0‑15.0 m/min, 1.7‑6.5 kg/h

Applications

• Structural steel construction
• Heavy equipment fabrication
• Bridge and offshore rig construction
• Pressure vessels and general fabrication