AKM-76 Flux-Cored Wire for High-Strength Low-Alloy and Armor Steel Welding.
A seamless flux-cored wire with ultra-low diffusible hydrogen content, designed for robot automatic welding of low-alloy high-strength steel and armor steel with yield strength exceeding 690 MPa.
Product Overview
AKM-76 is a metal powder type seamless flux-cored wire containing 2% Ni and 0.3% Mo, formulated for welding low-alloy high-strength steel with yield strength exceeding 690 MPa and armor steel at the same strength level.
The wire features ultra-low diffusible hydrogen content (≤3 ml/100g), a soft and stable arc, minimal spatter, and a clean weld appearance with almost no slag, least smoke and dust, and high deposition efficiency, making it especially suitable for robot automatic welding.
Application: It is suitable for welding low-alloy high- strength steel with yield strength exceeding 690MPa and armor steel with the same strength level.
Key Benefits
Ultra-Low Diffusible Hydrogen
With diffusible hydrogen content ≤3 ml/100g, AKM-76 reduces the risk of hydrogen-induced cracking in high-strength and hardenable base metals.
Stable Arc and Minimal Spatter.
The soft and stable arc, combined with low spatter, ensures consistent weld quality and reduces post-weld cleaning time, especially in automated welding environments.
Clean Weld Appearance with Almost No Slag.
The flux-cored design produces a weld bead with minimal slag, reducing the need for inter-pass cleaning and improving weld surface quality.
High Deposition Efficiency for Automation.
High deposition efficiency and low smoke and dust levels make AKM-76 ideal for robot automatic welding, where process stability and clean operation are critical.
Excellent Low-Temperature Impact Performance.
The deposited metal achieves impact values of 27 J at minus 20 degrees C, 98 J at minus 40 degrees C, and 75 J at minus 50 degrees C, ensuring toughness in severe service conditions.
Where It Is Used
- Welding of low-alloy high-strength steel with yield strength exceeding 690 MPa.
- Welding of armor steel with equivalent strength levels.
- Automated welding in industrial and defense fabrication.
- Applications requiring high toughness at low temperatures.
Who It Is For
- Welding consumable distributors supplying high-strength steel welding solutions.
- Fabricators of heavy machinery, pressure vessels, and structural components using high-strength steels.
- Robot welding cells requiring stable, low-spatter, high-efficiency consumables.
- Contractors working on defense, infrastructure, or offshore projects with demanding toughness requirements.
Problems It Solves
- Achieving high toughness at low temperatures in welds made on high-strength steels and armor steel.
- Reducing hydrogen-induced cracking risk in hardenable base metals through ultra-low diffusible hydrogen content.
- Maintaining stable arc and low spatter in automated welding systems.
- Minimizing post-weld cleaning and rework due to slag and smoke buildup.
Specifications
Published by the factory for AKM-76. 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: T69 5 Z M M21 1 H5 |
| Classification 2 | AWS A5.18 E110C-K4 |
| Classification 3 | GB/T 8110 E110C-M21 H4 |
| Element | Content |
|---|---|
| C | ≤0.15 |
| Si | ≤0.8 |
| Mn | 0.75-2.25 |
| S | ≤0.025 |
| P | ≤0.025 |
| Ni | 0.5-2.5 |
| Cr | 0.15-0.65 |
| Mo | 0.25-0.65 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥760 |
| Yield Stress (MPa) | ≥680 |
| Elongation (%) | ≥15J |
| Impact values (J) | ≥27J/-20℃ |
| Impact values (J) | 98J/-40℃ |
| Impact values (J) | 75J/-50℃ |
| Diameter | Current range |
|---|---|
| 1.2mm | 20-32/V 180-300/A |
| 1.6mm | 25-35/V 250-350/A |
Technical Features
- Seamless flux-cored wire with 2% Ni and 0.3% Mo content.
- Ultra-low diffusible hydrogen content ≤3 ml/100g.
- Deposited metal tensile strength ≥760 MPa, yield stress ≥680 MPa.
- Elongation ≥15 percent
- Impact values: ≥27 J at minus 20 degrees C, 98 J at minus 40 degrees C, 75 J at minus 50 degrees C.
- Complies with EN ISO 18276-A: T69 5 Z M M21 1 H5, AWS A5.18 E110C-K4, and GB/T 8110 E110C-M21 H4 standards.
- Available in 1.2 mm and 1.6 mm diameters with recommended welding parameters.
Use Guide
- For 1.2 mm diameter: use voltage 20-32 V and current 180-300 A.
- For 1.6 mm diameter: use voltage 25-35 V and current 250-350 A.
- Ensure base metal surfaces are clean of oil, rust, moisture, and paint before welding.
- Store the wire in sealed packaging and avoid exposure to humid environments.
- Use the recommended voltage and current ranges to maintain arc stability and minimize spatter.
How It Compares
AKM-76 and E110C-K4 both meet AWS A5.18 E110C-K4 and are used for high-strength steel welding. AKM-76 is a seamless flux-cored wire with ultra-low diffusible hydrogen and high deposition efficiency, ideal for robot welding. Solid wires may offer higher deposition but require higher shielding gas and are less tolerant of joint contamination. Basic-coated electrodes may have higher hydrogen content and are less suitable for automation. AKM-76’s low spatter and slag-free welds reduce cleaning time compared to conventional flux-cored wires.
Related Grades
Other welding wire in the same family.
AKM-76 Questions
What are the recommended welding parameters for 1.2 mm and 1.6 mm diameters?
Which standards does AKM-76 meet?
What are the mechanical properties of the deposited metal?
What is the diffusible hydrogen content?
What packing is AKM-76 supplied in?
Can we test AKM-76 before placing a production order?
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