AKM-69 Flux-Cored Wire for High-Strength Steel and A514 Welding.
A metal powder type seamless flux-cored wire with 2%Ni-0.3%Mo, ultra-low diffusible hydrogen (≤3ml/100g), and excellent low-temperature impact performance for demanding structural applications.
Product Overview
AKM-69 is a metal powder type seamless flux-cored welding wire designed for high-strength steel welding, including A514 materials used in port machinery bridges. The wire contains 2% Ni and 0.3% Mo, contributing to its mechanical performance and toughness.
It meets EN ISO 18276-A:T 62 5 Z M M21 1 H5, AWS A5.18 E100T15-M21 K3, and GB/T 8110 E100T15-M21 K3 H4 standards. The seamless design and low diffusible hydrogen content (≤3ml/100g) support sound weld metal with minimal risk of hydrogen-induced cracking.
The wire delivers a soft and stable arc, low spatter, beautiful bead appearance, almost no slag, minimal smoke and dust, and high deposition efficiency. These features reduce post-weld cleaning and improve working conditions.
Application: Suitable for high-strength steel welding and welding of A514 materials such as port machinery bridges.
Key Benefits
Ultra-Low Diffusible Hydrogen
With diffusible hydrogen content ≤3ml/100g, AKM-69 reduces the risk of hydrogen-induced cracking in high-strength and thick-section welds.
Excellent Low-Temperature Impact Performance.
The wire’s chemical composition and process design deliver strong impact toughness at low temperatures, suitable for service in cold environments.
Clean Weld Appearance and Minimal Spatter.
The soft arc and stable metal transfer produce a smooth, attractive bead with very low spatter, reducing the need for post-weld cleaning.
High Deposition Efficiency and Low Fumes.
The seamless flux-cored design and optimized flux formulation result in high deposition efficiency and minimal smoke and dust during welding.
Where It Is Used
- Welding of high-strength steels, including A514 materials.
- Structural welding in port machinery and bridge construction.
- Applications requiring high toughness and low hydrogen content.
Who It Is For
- Welding consumable distributors supplying flux-cored wires for structural and heavy equipment fabrication.
- Fabricators working with high-strength steels and demanding impact requirements.
- Contractors involved in bridge and port infrastructure projects.
Problems It Solves
- Achieving low hydrogen levels in weld metal to prevent cracking in high-strength and thick-section joints.
- Meeting low-temperature impact requirements in structural welds without sacrificing deposition rate or weld appearance.
- Reducing fumes, spatter, and slag in high-productivity welding environments.
Specifications
Published by the factory for AKM-69. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 18276- A:T 62 5 Z M M21 1 H5 |
| Classification 2 | AWS A5.18 E100T15-M21 K3 |
| Classification 3 | GB/T 8110 E100T15-M21 K3 H4 |
| Element | Content |
|---|---|
| C | 0.15 |
| Mn | 0.75-2.25 |
| P | 0.025 |
| S | 0.025 |
| Si | 0.8 |
| Ni | 0.50-2.50 |
| Mo | 0.25-0.65 |
| Cr | 0.15 |
Mechanical property data for this grade is not published on the factory datasheet. Ask our technical team for the test record before you qualify it.
| Diameter | Current range |
|---|---|
| 1.2mm | :20-32V / 180-300A |
| 1.6mm | :25-35V / 250-350A |
Technical Features
- Metal powder type seamless flux-cored wire with 2% Ni and 0.3% Mo content.
- Ultra-low diffusible hydrogen content ≤3ml/100g.
- Chemical composition: C 0.15%, Mn 0.75-2.25%, P 0.025%, S 0.025%, Si 0.8%, Ni 0.50-2.50%, Mo 0.25-0.65%, Cr 0.15%
- Meets EN ISO 18276-A:T 62 5 Z M M21 1 H5, AWS A5.18 E100T15-M21 K3, and GB/T 8110 E100T15-M21 K3 H4 standards.
- Recommended welding parameters: 1.2 mm – 20-32 V / 180-300 A; 1.6 mm – 25-35 V / 250-350 A.
Use Guide
- Select wire diameter based on joint thickness and welding position: 1.2 mm for thin to medium sections, 1.6 mm for thicker sections.
- Set voltage and current within the recommended ranges: 20-32 V / 180-300 A for 1.2 mm, 25-35 V / 250-350 A for 1.6 mm.
- Ensure joint surfaces are clean and free of oil, rust, moisture, and paint before welding.
- Store wire in sealed packaging and avoid exposure to humid environments; re-dry if exposed.
How It Compares
AKM-69 is a flux-cored wire with high toughness and low hydrogen content, suitable for high-strength steels. It differs from solid wires in its ability to produce a clean bead with minimal slag and fumes. Compared to other flux-cored wires with higher hydrogen levels, AKM-69 offers better resistance to hydrogen cracking. It is not intended for use in applications requiring a different classification or higher carbon content.
Related Grades
Other welding wire in the same family.
AKM-69 Questions
What are the recommended welding parameters for AKM-69?
Which standards does AKM-69 meet?
What is the diffusible hydrogen content of AKM-69?
What is the chemical composition of AKM-69?
What packing is AKM-69 supplied in?
Can we test AKM-69 before placing a production order?
Request a Quotation for AKM-69
Send the diameter, the quantity and the destination port. Our technical team replies with packing, pricing and the data you need to qualify the grade.