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Flux Cored Wire for Offshore Welding – HF-55M DNV Certified Norway
Seamless Flux Cored Wire for Offshore Welding
The HF-55M flux cored wire for offshore welding provides superior mechanical strength, excellent arc stability, and low hydrogen content.
It operates effectively down to −60 °C, ensuring consistent weld quality even in harsh offshore or Arctic conditions.
Because it meets DNV Type Approval (Grade IV Y50MS H5) and conforms to both AWS A5.29 E81T1-Ni1M-J and EN ISO 17632-A T 46 6 1Ni P M21 1 H5, it guarantees compliance with all international offshore welding standards.
Moreover, the seamless copper-coated design eliminates moisture absorption and removes the need for re-drying.
As a result, welders benefit from stable performance, minimal spatter, and clean weld beads.
In addition, the 1 % nickel alloy improves low-temperature toughness, which makes this wire ideal for offshore and Arctic fabrication throughout Norway.
Key Advantages of HF-55M Flux Cored Wire for Offshore Welding
DNV certified for offshore, marine, and pipeline projects
Delivers impact toughness of 90 J @ −60 °C
Ensures stable arc, smooth bead profile, and low spatter
Maintains H4 hydrogen classification for superior weld integrity
Operates in all positions except vertical-down
Provides high deposition rate and reliable feeding
Requires no re-drying, saving preparation time
Available exclusively in Norway from RAM SVEIS OG BEMANNING AS with ready stock in Søgne (Kristiansand) and nationwide delivery
Technical Highlights
| Parameter | Specification |
|---|---|
| Wire Type | Seamless copper-coated flux cored wire (FCAW) |
| Classification | AWS A5.29 E81T1-Ni1M-J / EN ISO 17632-A T 46 6 1Ni P M21 1 H5 |
| DNV Approval | Grade IV Y50MS (H5) – Certificate TAW00005EK |
| Diameter (mm) | 1.0 / 1.2 / 1.4 / 1.6 |
| Shielding Gas | M21 (80 % Ar + 20 % CO₂), 15–25 L/min |
| Polarity | DC + |
| Welding Positions | All (except vertical-down) |
| Yield Strength | 530 MPa (≥ 470 MPa) |
| Tensile Strength | 590 MPa (550–690 MPa) |
| Elongation | 25 % (≥ 19 %) |
| Impact Toughness | 90 J @ −60 °C (≥ 27 J) |
| Diffusible Hydrogen | < 3 ml / 100 g |
| Voltage Range | 22–32 V |
| Current Range | 180–300 A |
| Stick-out | 15–20 mm |
| Packaging | 5 kg / 15 kg spools / 200 kg drums |
Click here to download HF-55M-Seamless-Flux-Cored-Wire-FCAW-Specifications
Click here to download certificate DNV-HF-55M-4Y50
Applications of Flux Cored Wire for Offshore Welding
The HF-55M is specifically developed for industries that demand high strength, reliability, and safety.
It performs exceptionally in:
Offshore platform construction and subsea structures
Pipeline welding for oil and gas networks
Shipbuilding and marine fabrication
Heavy equipment manufacturing
Arctic and low-temperature energy projects
Furthermore, its smooth feeding and easy slag removal reduce downtime and cleanup time.
Therefore, welders achieve higher productivity, more consistent welds, and lower repair costs.
As a result, companies benefit from efficient production and long-term reliability.
Chemical Composition (Typical wt %)
| C | Mn | Si | Ni | Mo | Cr | P | S |
|---|---|---|---|---|---|---|---|
| 0.032 | 1.300 | 0.380 | 0.970 | 0.010 | 0.010 | 0.009 | 0.006 |
The balanced composition ensures excellent weldability and high mechanical stability.
Nickel improves low-temperature ductility, while manganese and silicon enhance deoxidation and slag flow.
Consequently, the wire produces clean, crack-free welds with strong metallurgical properties.
Typical Operating Parameters
| Wire Diameter (mm) | Voltage (V) | Current (A) | Stick-out (mm) | Gas Flow (L/min) | Polarity | Recommended Use |
|---|---|---|---|---|---|---|
| 1.0 | 20–30 | 150–260 | 15–20 | 15–25 | DC + | Thin-plate and multipass welding |
| 1.2 | 22–32 | 180–300 | 15–20 | 15–25 | DC + | Offshore structures and pipelines |
| 1.4 / 1.6 | 24–34 | 220–380 | 18–22 | 15–25 | DC + | Long seams and automated systems |
These parameter ranges cover both manual and semi-automatic welding.
Consequently, operators can easily adjust the settings to match each application and achieve optimal penetration and bead formation.
Packaging and Availability
RAM SVEIS OG BEMANNING AS supplies HF-55M in 5 kg and 15 kg spools, and 200 kg drums for industrial systems.
All variants remain in stock in Søgne (Kristiansand), ensuring fast nationwide delivery.
Moreover, every unit is traceable and DNV-approved, providing full certification for professional offshore use.
Why Choose RAM SVEIS OG BEMANNING AS
RAM SVEIS OG BEMANNING AS delivers premium welding consumables and technical support for the Norwegian offshore and energy industries.
We focus on traceability, logistics efficiency, and consistent product quality.
By choosing HF-55M flux cored wire for offshore welding, professionals gain DNV-certified assurance, low hydrogen levels, and dependable Arctic-grade performance.
Furthermore, our Kristiansand facility ensures local availability and prompt customer assistance.
Frequently Asked Questions (FAQ)
1. What is HF-55M used for?
HF-55M is designed for offshore, pipeline, and Arctic fabrication, providing strong mechanical properties and proven low-temperature toughness.
2. Why choose a seamless flux cored wire?
Because it prevents moisture absorption and hydrogen pickup, it guarantees clean, crack-free welds without the need for re-drying.
3. What shielding gas should I use?
Use M21 (80 % Argon / 20 % CO₂) at 15–25 L/min. This mix ensures smooth arc transfer and low spatter.
4. Is HF-55M DNV approved?
Yes. It holds DNV Approval Grade IV Y50MS (H5) and is suitable for offshore vessels and marine construction.
5. How does it perform in Arctic temperatures?
It provides impact toughness of 90 J @ −60 °C, maintaining ductility and structural integrity in extreme cold.
6. Where can I buy HF-55M in Norway?
It is available exclusively from RAM SVEIS OG BEMANNING AS, with ready stock in Søgne (Kristiansand) and nationwide delivery.
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