Coreweld 69 LT H4

Coreweld 69 LT H4 is a metal‑cored flux‑cored welding wire designed for high‑strength steels (>690 MPa) offering excellent sub‑zero toughness down to –60 °C and low diffusible hydrogen levels. Suitable for use with Ar/CO₂ shielding gas mixtures.

Key Features

• Flat welds with deep penetration and high deposition rates.
• Up to three times more productive than stick welding and 2.5 × more than MIG.
• Low diffusible hydrogen (H4) for high‑quality, crack‑free welds.
• Excellent arc stability and wetting, minimal slag and spatter.
• Versatile for structural steel, heavy equipment, bridges, offshore rigs, shipbuilding, pressure vessels, and general fabrication.

Specifications

• Classifications: SFA/AWS A5.28 : E110C‑G‑H4; EN ISO 18276‑A/B (T 69 6 Mn2NiMo … H5).
• Approvals: CE (EN 13479), DB 42.039.47, UKCA (EN 13479), VdTÜV 19912.
• Welding Current: DC+
• Diffusible Hydrogen: < 4 ml/100 g
• Alloy Type: C Mn, low‑alloy steel (2 % Ni, 0.5 % Mo)
• Shielding Gas: M21 (EN ISO 14175)
• Tensile Properties (As Welded): Yield 755 MPa, Tensile 790 MPa, Elongation 20 %
• Charpy Impact (As Welded): –60 °C, 80 J
• Typical Weld Metal Analysis (%): C 0.05, Mn 1.7, Si 0.5, S 0.008, P 0.011, Ni 2.30, Cr 0.06, Mo 0.50, V 0.01, Cu 0.012, Nb 0.005
• Deposition Data:
  • 1.2 mm: 100‑320 A, 16‑32 V, 1.8‑12.0 m/min, 1.3‑7.5 kg/h
  • 1.4 mm: 120‑380 A, 16‑34 V, 2.0‑9.0 m/min, 1.6‑7.5 kg/h
  • 1.6 mm: 140‑450 A, 18‑36 V, 1.5‑8.5 m/min, 1.6‑8.0 kg/h

Applications

• Structural steel construction
• Heavy equipment manufacturing
• Bridge and offshore rig fabrication
• Shipbuilding and railcar production
• Pressure vessels and petrochemical processing
• General fabrication projects