AK-69M Flux-Cored Wire for High-Strength Steel Welding.
A seamless rutile flux-cored wire with 2% Ni content, designed for low hydrogen deposition and stable arc performance on high-strength steels used in port machinery and bridges.
Product Overview
AK-69M is a seamless rutile flux-cored wire containing 1.25-2.60% nickel, formulated for welding high-strength steels such as HY-100 and A514. The seamless construction contributes to a typical hydrogen content of 3 ml per 100 g of weld metal, reducing the risk of hydrogen-induced cracking.
It delivers a stable welding arc with minimal spatter and a smooth bead surface, supporting excellent weldability across flat, horizontal, vertical, and overhead positions. The wire is supplied in 1.2 mm and 1.6 mm diameters with recommended welding parameters for each.
Application: Welding for port machinery, bridges, such as HY-100, A514 high stre ngth steel.
Key Benefits
Low Hydrogen Content
The seamless design of AK-69M results in a typical hydrogen content of 3 ml per 100 g of weld metal, which helps prevent hydrogen-induced cracking in high-strength steel joints.
Stable Arc and Low Spatter.
The rutile flux formulation ensures a stable arc and minimal spatter during welding, improving process efficiency and reducing post-weld cleaning.
Smooth Bead Surface
The wire produces a well-formed, uniform bead with a clean surface finish, reducing the need for grinding or additional finishing.
Suitable for High-Strength Steels.
Designed for welding materials such as HY-100 and A514, AK-69M maintains mechanical integrity and crack resistance in demanding structural applications.
Where It Is Used
- Welding of port machinery components.
- Bridge fabrication and repair.
- High-strength steel structures requiring crack resistance.
- Structural joints in heavy equipment and offshore platforms.
Who It Is For
- Welding consumable distributors supplying flux-cored wires for structural and heavy equipment applications.
- Fabricators working with HY-100 and A514 steels in bridge and port infrastructure.
- Contractors requiring low-hydrogen consumables for high-strength steel welding.
Problems It Solves
- Hydrogen-induced cracking in high-strength steel welds due to high hydrogen content in filler metal.
- Unstable arc and excessive spatter during flux-cored welding, to poor bead quality and rework.
- Difficulty in achieving consistent weld quality on thick-section high-strength steels without specialized consumables.
Specifications
Published by the factory for AK-69M. 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 55 2Mn2Ni P M21 1 |
| Classification 2 | AWS A5.29 E101T1-K3M GB/T 17493 E691T1-K3M |
| Element | Content |
|---|---|
| C | 0.15 |
| Mn | 0.50-2.25 |
| P | 0.03 |
| S | 0.03 |
| Si | 0.8 |
| Ni | 1.25-2.60 |
| Cr | 0.15 |
| Mo | 0.25-0.65 |
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
- Seamless rutile flux-cored wire with 1.25-2.60% nickel content.
- Typical hydrogen content of 3 ml per 100 g of weld metal.
- Supplied in 1.2 mm and 1.6 mm diameters.
- Complies with EN ISO 18276-A:T 55 2Mn2Ni P M21 1 and AWS A5.29 E101T1-K3M, GB/T 17493 E691T1-K3M classifications.
- Chemical composition includes C: 0.15%, Mn: 0.50-2.25%, Si: 0.8%, P: 0.03%, S: 0.03%, Cr: 0.15%, Mo: 0.25-0.65%
Use Guide
- Use 1.2 mm diameter wire with voltage range 20-32 V and current 180-300 A.
- Use 1.6 mm diameter wire with voltage range 25-35 V and current 250-350 A.
- Ensure joint surfaces are clean and free of oil, rust, moisture, and paint before welding.
- Store the wire in sealed packaging and avoid exposure to humid environments to maintain low hydrogen levels.
- Re-bake if wire has been exposed to moisture; follow recommended re-baking procedures before use.
How It Compares
AK-69M is a rutile flux-cored wire with 2% nickel, designed for high-strength steels like HY-100 and A514. It differs from basic flux-cored wires, which have higher hydrogen content and are used for critical applications requiring maximum toughness. Compared to solid wires, AK-69M offers better arc stability and slag coverage, but requires careful storage to maintain low hydrogen levels. It is not intended for use on non-ferrous metals or low-alloy steels outside its specified range.
Related Grades
Other welding wire in the same family.
AK-69M Questions
What are the recommended welding parameters for 1.2 mm and 1.6 mm diameters?
Which standards does AK-69M meet?
What is the typical hydrogen content of the deposited metal?
What is the nickel content range in AK-69M?
What packing is AK-69M supplied in?
Can we test AK-69M before placing a production order?
Request a Quotation for AK-69M
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.