Kobe Welding Electrodes — Quick Reference
Kobe (Kobelco) = MMA/stick welding electrodes for AU trade + fabrication + maintenance welding. General purpose rutile electrode for everyday mild steel work, plus a low hydrogen (E7018) electrode for structural and higher-integrity welds.
| Kobe Electrode | Classification | Best For |
|---|---|---|
| RB26 General Purpose Electrode (2.6mm) | Rutile, all-position | General fabrication, mild steel, non-critical welds |
| LB52-18 Hydrogen Controlled Electrode (2.6mm) | AWS A5.1 E7018, low hydrogen basic | Structural steel, pressure-rated + crack-sensitive joints |
Critical: Low hydrogen electrodes are moisture-sensitive — store in a sealed container or holding oven once opened, and re-bake per manufacturer spec if exposed to damp air. Moisture pickup is the leading cause of hydrogen-induced cracking in E7018 welds. Brand: Kobe. Companion: stick electrodes, welding, welding supplies.
Kobe MMA Welding Electrodes at AIMS Industrial
Kobe is the trade name under which Kobelco electrodes are supplied through Australian welding distribution, and AIMS Industrial stocks 2.6mm stick electrodes covering the bulk of everyday MMA welding work: a general purpose rutile rod for routine fabrication, and a low hydrogen rod for anything structural or crack-sensitive. Both are genuine Kobelco-manufactured consumables, not a house-branded substitute.
Kobe RB26 General Purpose Electrodes
RB26 is a rutile-coated general purpose electrode designed for all-position welding on mild steel. It runs smoothly with easy arc starting and re-striking, produces a self-releasing slag, and is the electrode most tradespeople reach for on everyday fabrication, repair, and maintenance welding where the joint isn't carrying a structural or pressure-rated load. It's a forgiving rod for a wide range of site and workshop conditions, including out-of-position work.
Kobe LB52-18 Hydrogen Controlled Electrodes
LB52-18 is a low hydrogen, basic-coated electrode classified to AWS A5.1 E7018. Low hydrogen electrodes deposit weld metal with a much lower diffusible hydrogen content than rutile rods, which matters on thicker sections, higher-strength steels, and any joint where hydrogen-induced cracking is a real risk — structural steel, pressure vessels, and other applications where weld integrity is inspected or certified. The trade-off is that low hydrogen electrodes need to be kept dry: once a pack is opened, moisture from the air will compromise the coating, so correct storage (a sealed tin, or a rod oven on site) is part of using them correctly, not an optional extra.
Choosing between the two
If the weld is structural, pressure-rated, on thicker material, or going to be inspected against a welding procedure specification, LB52-18 low hydrogen is the right electrode. For general fabrication, brackets, non-critical repairs, and routine mild steel work, RB26 general purpose electrodes are the simpler, more forgiving choice and typically the faster rod to run.
Need help matching electrode type and diameter to your material thickness and joint type? contact our team or request a quote for trade pricing on Kobe electrodes.
People Also Ask — Kobe
Q: What's the difference between a general purpose and a low hydrogen welding electrode?
A general purpose electrode like Kobe RB26 has a rutile coating that's easy to strike and forgiving in all positions, suited to routine mild steel fabrication. A low hydrogen electrode like Kobe LB52-18 (AWS A5.1 E7018) deposits weld metal with much lower diffusible hydrogen, which is what structural, pressure-rated, and thicker-section welds need to avoid hydrogen-induced cracking.
Q: What does the E7018 classification actually mean?
E7018 is an AWS A5.1 classification for a low hydrogen, basic-coated mild steel stick electrode with a minimum tensile strength of 70,000 psi, usable in all positions with iron powder in the flux coating for a smoother run and better slag release.
Q: Why do low hydrogen electrodes need special storage?
Low hydrogen electrodes like LB52-18 will absorb moisture from the air once the pack is opened, and that moisture is the leading cause of hydrogen-induced cracking in the finished weld. They need to be kept in a sealed container or a holding oven once opened, and re-baked to the manufacturer's specification if they've been exposed to damp air for any length of time.
Q: Is Kobe the same brand as Kobelco?
Yes — Kobe is the trade name under which Kobelco welding consumables, including the RB26 and LB52-18 electrodes stocked at AIMS Industrial, are supplied through Australian welding distribution.
Q: What electrode diameter should I use for general fabrication work?
AIMS stocks Kobe RB26 and LB52-18 electrodes in 2.6mm, a commonly used size for general fabrication and structural work on light-to-medium section steel. For other thicknesses, match electrode diameter to material thickness and joint design, or contact our team for guidance.