AK-ENi5 Submerged Arc Welding Wire for Low Temperature Steel.
A submerged arc welding wire formulated for cryogenic applications with low sulfur and phosphorus content, delivering excellent low-temperature toughness in joints welded with fluxes like SJ101.
Product Overview
AK-ENi5 is a submerged arc welding wire designed for low temperature service, used in conjunction with fluxes such as SJ101 for welding cryogenic vessels, offshore platforms, and ships.
The wire has a low sulfur content (≤0.025%) and low phosphorus content (≤0.03%), which helps minimize the risk of embrittlement and cracking in low-temperature environments.
It is supplied to EN ISO 14171-A S 46 6 FB T2Ni5, AWS A5.23 F8A8-ENi5-Ni5, and GB/T 5293 S55A 6 FB-SUN2M1 standards, and is suitable for welding materials such as S355 steel.
Application: With flux (such as SJ101, etc.), it is used for welding of cryogenic vessels, offshore platforms and ships, such as submerged arc welding of S355 steel.
Key Benefits
Low S and P for Improved Toughness.
The chemical composition limits sulfur to ≤0.025% and phosphorus to ≤0.03%, reducing the risk of cold cracking and improving weld metal performance at low temperatures.
Excellent Low-Temperature Impact Toughness.
The deposited metal achieves impact values of ≥27 J at -60℃, meeting the requirements for service in cryogenic and offshore environments.
High Strength and Ductility.
Tensile strength ranges from 550 to 700 MPa, yield stress is ≥470 MPa, and elongation is ≥22%, ensuring robust joint performance under mechanical stress.
Compatibility with Standard Fluxes.
AK-ENi5 is recommended for use with fluxes such as SJ101, enabling consistent weld quality in automated submerged arc welding processes.
Where It Is Used
- Welding of cryogenic vessels operating at low temperatures.
- Offshore platform structures exposed to harsh marine environments.
- Shipbuilding applications requiring high toughness in low-temperature service.
- Submerged arc welding of S355 steel and similar low-alloy steels.
Who It Is For
- Welding consumable distributors supplying materials for cryogenic and offshore projects.
- Fabricators of pressure vessels and storage tanks for low-temperature service.
- Shipyards and offshore contractors requiring consistent, certified welding wire for critical joints.
Problems It Solves
- Achieving required low-temperature toughness in welds without compromising strength or ductility.
- Avoiding embrittlement in weld metal due to high sulfur or phosphorus content.
- Sourcing a single, certified welding wire that meets multiple international standards (EN ISO, AWS, GB/T) for use with standard fluxes.
Specifications
Published by the factory for AK-ENi5. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 14171-A S 46 6 FB T2Ni5 |
| Classification 2 | AWS A5.23 F8A8-ENi5-Ni5 |
| Classification 3 | GB/T 5293 S55A 6 FB-SUN2M1 |
| Element | Content |
|---|---|
| C | ≤0.12 |
| Si | ≤0.80 |
| Mn | 0.60-1.60 |
| S | ≤0.025 |
| P | ≤0.03 |
| Mo | 0.10-0.35 |
| Ni | 0.75-1.10 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | 550-700 |
| Yield Stress (MPa) | ≥470 |
| Elongation (%) | ≥22J |
| Impact values (J) | ≥27J/-60℃ |
Technical Features
- Chemical composition: C ≤0.12%, Si ≤0.80%, Mn 0.60–1.60%, S ≤0.025%, P ≤0.03%, Mo 0.10–0.35%, Ni 0.75–1.10%
- Tensile strength: 550–700 MPa.
- Yield stress: ≥470 MPa.
- Elongation: ≥22%
- Impact toughness: ≥27 J at -60℃.
- Supplied to EN ISO 14171-A S 46 6 FB T2Ni5, AWS A5.23 F8A8-ENi5-Ni5, and GB/T 5293 S55A 6 FB-SUN2M1 standards.
Use Guide
- Use AK-ENi5 with compatible fluxes such as SJ101 for submerged arc welding of low-temperature steels.
- Ensure the flux is dry and free from contamination before use to maintain weld metal cleanliness.
- Follow recommended welding parameters for the specific joint configuration and plate thickness.
- Clean the joint surfaces of rust, oil, and moisture prior to welding to avoid defects.
How It Compares
AK-ENi5 is a nickel-alloyed submerged arc welding wire designed for low-temperature service. It differs from standard carbon steel wires by having controlled levels of nickel (0.75–1.10%) and low sulfur and phosphorus, which enhance toughness at sub-zero temperatures. Unlike general-purpose wires, it is specifically formulated to meet the mechanical and chemical requirements of cryogenic and offshore applications.
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Technical background on this grade from the AKWELD knowledge centre.
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Other welding wire in the same family.
AK-ENi5 Questions
What standards does AK-ENi5 meet?
What are the key chemical elements and their limits?
What mechanical properties does the deposited metal achieve?
Which fluxes are recommended for use with AK-ENi5?
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Can we test AK-ENi5 before placing a production order?
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