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Brand: Kjellberg
Kjellberg AQUAWELD Wet Underwater Welding Stick Electrode
Description
A rutile-basic electrode for manual wet underwater welding
The Kjellberg AQUAWELD is a rutile-basic coated special-purpose electrode with a conducting and water-repellent coating for manual wet underwater welding. Kjellberg lists it for assembly and repair welding in up to 20 m of water depth, for offshore and harbour construction, shipbuilding and steel hydraulic engineering. The covered electrode has been tested by GSI and approved as a welding filler material to DVS 1801 up to a water depth of 10 metres.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Kjellberg Finsterwalde Elektroden und Zusatzwerkstoffe GmbH |
| Product | AQUAWELD stick electrode, special applications |
| Coating | Rutile-basic, conducting and water-repellent |
| Standard designation | DIN 2302 E 38 0 Z RB 10 fr |
| Process | Manual wet underwater welding |
| Water depth | Up to 20 m; GSI-tested and approved to DVS 1801 up to 10 m |
| Base materials | Mild steels with carbon equivalent CEV (IIW) of 0.4 % maximum |
| Weld metal composition, typical | C 0.05 %, Si 0.25 %, Mn 0.5 %, Mo 0.5 % |
| Yield strength Re | At least 380 MPa |
| Tensile strength Rm | At least 470 MPa |
| Charpy ISO-V at 0 deg C | At least 27 J |
| Diameter and length | 3.25 x 350 mm; item 00.995.323 |
| Welding current | 140 to 190 A |
| Packaging | 4.3 kg per pack; about 115 pieces; 37.4 kg per 1000 pieces |
Limits that the data sheet states
The electrode is not suitable for welding higher-strength steels, because these materials can be subject to cracking from underwater welding. The carbon equivalent formula given is CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15, in per cent, and the base material must stay at or below 0.4 %. Kjellberg also stresses that high-quality welds require appropriate weld preparation, well-trained personnel and compliance with recognised standards of good practice.
Handling
AQUAWELD is supplied for wet welding, so the electrode stays in its protective packaging until use and welding follows the diver-welder procedure and safety rules of the project. A single size is listed: 3.25 mm diameter and 350 mm long at 140 to 190 A.
Documents and quotation
The attached Kjellberg AQUAWELD data sheet gives the data listed on this page. For a quotation please send the diameter and length, quantity and packaging, the base material and the welding procedure it is to be used in. A Kjellberg flyer on AQUAWELD exists on the Kjellberg site; the attached document is the data sheet. Related items are listed under Welding Electrodes.
Datasheets & Documents
- Datasheet Kjellberg AQUAWELD data sheet (EN) Download
Reviews (0)
About brand
Kjellberg Finsterwalde is a German maker of plasma cutting systems, welding equipment and welding electrodes. The company was established on 4 April 1922 in Finsterwalde, Brandenburg, as Kjellberg Elektro-Maschinen GmbH, at the suggestion of Swedish engineer Oscar Kjellberg, who in 1908 received a German patent for the coated welding electrode. Its first product, a welding generator, followed in 1923. The group is owned by the Kjellberg Foundation.
Seven Star LLC is an independent supplier in Muscat. We list Kjellberg plasma systems and electrodes for fabricators and welding shops in Oman and the GCC.
Kjellberg company profile
| Founded | 4 April 1922, Finsterwalde, Germany |
|---|---|
| Namesake | Oscar Kjellberg, inventor of the coated welding electrode (German patent 231733, 1908) |
| Headquarters | Finsterwalde, Brandenburg |
| Ownership | Kjellberg Foundation (sole shareholder), Gießen |
| Product families | HiFocus and Smart Focus plasma cutting systems, CutFire plasma units, plasma torches and consumables, automated welding machines, coated welding electrodes |
Milestones
- 1908: Oscar Kjellberg is granted a German patent for the coated welding electrode.
- 1922: Kjellberg Elektro-Maschinen GmbH is established in Finsterwalde.
- 1923: The first Finsterwalde welding generator is presented.
Kjellberg product series
Air plasma cutting systems include the CUTFIRE 70, 90, 105 and 125 for manual and mechanised cutting, and the K 200 for mechanised cutting.
Stick electrodes include the CROMO 1B E8018-B2 creep-resistant electrode, the FINOX 182 ENiCrFe-3 nickel-base electrode and the AQUAWELD wet underwater welding electrode.
Air plasma systems cut with compressed air as the plasma gas, and the cutting capacity rises with output current from the CUTFIRE 70 to the CUTFIRE 125. Mechanised systems such as the K 200 are used on CNC cutting tables for repeatable cut quality on thicker plate.
Where Kjellberg products are used
Plate and sheet cutting in fabrication shops, CNC cutting tables, welding of creep-resistant and nickel alloy steels, and underwater repair welding.
Kjellberg products we list
Ordering Kjellberg products: what we need
Send the model, cutting thickness and material, supply voltage and torch type, or the electrode classification, diameter and quantity.
Facts checked against Kjellberg's own company history and published company profiles, October 2026.
Browse Kjellberg products by category: Plasma Cutting Systems, Welding Electrodes.
FAQ
Questions about the Kjellberg AQUAWELD Wet Underwater Welding Stick
Answers from our engineering team on installation, compatibility and integration.
01What is AQUAWELD used for?
Manual wet underwater welding of mild steel, for example offshore, harbour, shipbuilding and hydraulic steel structures.
02What depth is it suitable for?
Up to 20 m is stated for use; GSI testing and DVS 1801 approval apply up to 10 m.
03Can it weld higher-strength steels?
No. The data sheet says it is not suitable for higher-strength steels because of cracking risk.
04What size is listed?
3.25 mm diameter by 350 mm, welded at 140 to 190 A.
05What carbon equivalent is allowed?
A maximum CEV (IIW) of 0.4 % for the base steel.
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