OK Flux 10.65

OK Flux 10.65 is an agglomerated fluoride‑basic flux for Submerged Arc Welding (SAW), designed for multi‑run welding of creep‑resistant Cr‑, Mo‑alloyed steels where high toughness is required.

Key Features

• Low impurity level for exceptionally clean weld metal
• Suitable for narrow‑gap, single‑ and multi‑wire procedures on both DC and AC
• Available in BlockPac, buckets and BigBag with moisture‑protective packaging
• Low oxygen (≈300 ppm) and diffusible hydrogen (≤5 ml/100 g, ≤4 ml/100 g in BlockPac)
• Compatible with OK Autrod B3 SC wire for superior strength and toughness

Specifications

• Classifications: EN ISO 14174 SA FB 1 65 AC H4 (BlockPac), EN ISO 14174 SA FB 1 65 AC H5
• Approvals: CE EN 13479, UKCA EN 13479
• Diffusible Hydrogen: max 5 ml/100 g (redried), max 4 ml/100 g (BlockPac)
• Slag Type: Fluoride‑basic
• Alloy Transfer: Slightly silicon, no manganese
• Density: 1.0 kg/dm³
• Basicity Index: 2.4
• Flux Consumption (SAW, Ø 4.0 mm, 580 A, 55 cm/min):
  • 26 V – DC+ 0.7 kg / AC 0.6 kg
  • 30 V – DC+ 1.0 kg / AC 0.9 kg
  • 34 V – DC+ 1.3 kg / AC 1.2 kg
  • 38 V – DC+ 1.6 kg / AC 1.4 kg

Applications

• Petrochemical and chemical industry pipelines
• Power generation equipment
• Pressure vessels and boilers
• Narrow‑gap welding of thick plates
• Multi‑layer, multi‑run SAW welds requiring high toughness