SUB ARC FLUX HYUNDAI 777MX (H14) 20KG

Hyundai S-777MX (H14) Submerged Arc Welding Flux – 20KG

Premium Agglomerated SAW Flux for Mild & High-Tensile (490 MPa Class) Steel

The Hyundai S-777MX × H-14 Submerged Arc Welding Flux, packed in a convenient 20kg container, is a high-performance agglomerated (bonded) flux engineered for single- and multi-layer submerged arc welding (SAW) of mild steel and 490 MPa class high-tensile steel. Trusted by fabricators, shipbuilders, and structural steel manufacturers worldwide, this flux delivers consistent, high-quality weld beads with excellent mechanical properties and reliable arc stability.

Key Features

• Insensitive to surface contamination — performs reliably even on plates with light oil, rust, mill scale, dirt, or primer residue, reducing pre-weld cleaning time
• Smooth, stable arc performance on both AC and DC electrode positive (DCEP) power sources
• Excellent bead appearance with easy slag removal and low spatter
• Good impact toughness and mechanical strength in the deposited weld metal, suitable for demanding structural applications
• Compatible with H14 solid welding wire (1.6–6.4mm wire diameter range) for the S-777MX × H-14 combination

Classifications & Standards

• AWS A5.17 / ASME SFA5.17: F7A0-EH14
• JIS Z3352: SA AR1
• ISO 14174-S A AR 1 / ISO 14171-A-S4

Recommended Applications

• Shipbuilding and marine structures
• Bridges and structural steel fabrication
• Pressure vessels and storage tanks
• Pipe manufacturing and heavy plate welding
• General fabrication requiring high productivity, single or multi-pass SAW welding

Packaging

• Net Weight: 20 KG per bag/drum
• Flux type: Agglomerated (bonded) neutral flux, ideal for both single and multi-wire welding processes

Why Choose Hyundai 777MX (H14) Flux?

As part of Hyundai Welding's trusted submerged arc consumables range, the S-777MX flux paired with H14 wire is a go-to choice for welders needing dependable performance on general structural and shipbuilding steels — balancing weld quality, productivity, and tolerance for less-than-perfect base metal surface conditions.

Note on Usage

• 1. Dry the flux at 300~350?(572~662?) for 60minutes before use.
• 2. When the flux height is excessive, poor bead appearance may occur.
• 3. Remove rust, scales, oil, paint, water, dirt and slag of tack welds from the groove to obtain sound weld metal.
• 4. Use welding current and speed as low as possible at the first layer of groove to avoid cracking.
  

Note: Always refer to the official Hyundai Welding datasheet/MSDS for exact chemical composition, current ranges, and welding parameters specific to your application.