AK-76M Flux-Cored Wire for High-Strength Steel Bridge and Machinery Welding.
A seamless rutile flux-cored wire with 2% Ni content, designed for low hydrogen deposition and stable arc performance when welding extra high tensile steels in bridge and port machinery applications.
Product Overview
AK-76M is a seamless rutile flux-cored wire containing 2% Ni, formulated for welding high-strength steels such as HY-100, A514, and Q690. The seamless construction contributes to an extremely low hydrogen content, which is critical for preventing hydrogen-induced cracking in high-tensile base metals.
The wire delivers a stable welding arc with minimal spatter and a smooth, well-defined bead surface. Its excellent weldability supports consistent deposition and clean inter-run cleaning, making it suitable for demanding structural applications.
Application: Welding for the same strength leave structures of bridge, port machin ery,suchas:HY-100,A514,Q690.
Key Benefits
Extremely Low Hydrogen Content.
The seamless design of AK-76M ensures low hydrogen levels in the deposited metal, which is essential for maintaining integrity in high-tensile steels prone to hydrogen cracking.
Stable Arc and Low Spatter.
The rutile flux formulation provides a stable arc across the recommended current range, reducing spatter and improving weld appearance and process efficiency.
Smooth Bead Surface
The wire produces a clean, uniform bead profile with minimal surface irregularities, reducing the need for post-weld grinding or finishing.
Compatibility with High-Strength Steels.
Designed for use on materials such as HY-100, A514, and Q690, AK-76M delivers consistent mechanical properties and weld metal performance in high-strength structural applications.
Where It Is Used
- Welding of high-strength steel structures in bridge construction.
- Fabrication and repair of port machinery and heavy equipment.
- Structural welding where high tensile strength and low hydrogen content are required.
- Applications involving HY-100, A514, and Q690 base metals.
Who It Is For
- Steel fabricators working with high-strength steels in bridge and marine structures.
- EPC contractors involved in large-scale infrastructure projects.
- Maintenance teams responsible for high-tensile steel components in port and industrial machinery.
Problems It Solves
- Risk of hydrogen cracking in high-tensile steels due to high hydrogen content in filler metal.
- Inconsistent weld quality and excessive spatter when using non-optimized flux-cored wires.
- Need for multiple consumables to cover different strength levels and joint types in high-strength steel fabrication.
Specifications
Published by the factory for AK-76M. 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 69 4Mn2NiMo P M21 1 |
| Classification 2 | AWS A5.29 E111T1-K3M GB/T 17493 E761T1-K3M |
| Element | Content |
|---|---|
| C | 0.15 |
| Mn | 0.75-2.25 |
| 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% Ni content.
- Complies with EN ISO 18276-A:T 69 4Mn2NiMo P M21 1 and AWS A5.29 E111T1-K3M standards.
- GB/T 17493 E761T1-K3M classification.
- Chemical composition includes C: 0.15%, Mn: 0.75-2.25%, Si: 0.8%, P: 0.03%, S: 0.03%, Cr: 0.15%, Mo: 0.25-0.65%
- Recommended welding parameters: 1.2 mm diameter – 20-32 V / 180-300 A; 1.6 mm diameter – 25-35 V / 250-350 A.
Use Guide
- Select wire diameter based on joint thickness and access: 1.2 mm for thin sections and tight spaces, 1.6 mm for higher deposition rates and thicker materials.
- Set voltage and current within the recommended ranges: 20-32 V and 180-300 A for 1.2 mm; 25-35 V and 250-350 A for 1.6 mm.
- Ensure the wire is stored in a dry environment and protected from moisture before use to maintain low hydrogen levels.
- Clean base metal surfaces of rust, oil, paint, and moisture prior to welding to prevent porosity and ensure sound welds.
How It Compares
AK-76M is a rutile flux-cored wire with 2% Ni and low hydrogen content, suitable for high-strength steels like HY-100 and Q690. It differs from basic flux-cored wires, which may offer higher toughness but require stricter storage and handling. Compared to solid wires, AK-76M provides better arc stability and slag coverage, though it requires a gas shield. It is not intended for use on low-alloy or non-structural steels where lower nickel content would be sufficient.
Related Grades
Other welding wire in the same family.
AK-76M Questions
What standards does AK-76M meet?
What is the nickel content and how does it affect weld performance?
What are the recommended welding parameters?
Is this wire suitable for all-position welding?
What packing is AK-76M supplied in?
Can we test AK-76M before placing a production order?
Request a Quotation for AK-76M
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.