AK-H08MnMoTiB Submerged Arc Welding Wire for Pipeline and High-Strength Steel.
A submerged arc welding wire designed for pipeline steel and low-alloy high-strength structural steel, delivering strong, crack-resistant welds with excellent mechanical properties when used with matching fluxes.
Product Overview
AK-H08MnMoTiB is a submerged arc welding wire formulated for welding pipeline steel grades X65, X70, and X80, as well as low-alloy high-strength structural steel. It is used in conjunction with compatible fluxes such as AKJ101G and AKJ102G.
The wire produces weld seams with a smooth, attractive appearance and high mechanical performance, including good crack resistance and impact toughness at low temperatures.
Application: With flux (such as AKJ101G, AKJ102G, etc.), X65, X70, X80 pipeline steel and low-alloy high strength structural steel can be welded.
Key Benefits
High Strength and Toughness.
The deposited metal achieves a tensile strength of at least 590 MPa and a yield stress of at least 500 MPa, with elongation of at least 20 percent and impact energy of at least 50 J at minus 40 degrees C.
Excellent Crack Resistance
The chemical composition, including controlled levels of boron (0.10%) and titanium (0.15%), enhances the weld metal’s resistance to cracking during solidification and cooling.
Compatibility with Key Pipeline Grades.
When used with fluxes like AKJ101G and AKJ102G, AK-H08MnMoTiB is suitable for welding X65, X70, and X80 pipeline steels, meeting the demands of high-pressure and high-integrity applications.
Clean, Well-Formed Weld Bead.
The wire produces a smooth, uniform weld bead profile with minimal spatter and good fusion, reducing post-weld cleaning and rework.
Where It Is Used
- Pipeline construction and repair for X65, X70, and X80 steel grades.
- Welding of low-alloy high-strength structural steel in pressure vessels and heavy equipment.
- Submerged arc welding in automated and semi-automated production lines.
- Applications requiring high impact toughness at low temperatures.
Who It Is For
- Pipeline and oil & gas contractors requiring consistent, code-compliant welding consumables.
- Fabricators of high-strength steel structures needing reliable, crack-resistant welds.
- Welding distributors supplying submerged arc wire for pipeline and structural projects.
- EPC contractors managing large-scale pipeline and infrastructure builds.
Problems It Solves
- Achieving sufficient crack resistance in high-strength pipeline welds without compromising mechanical properties.
- Matching filler metal chemistry to base metals like X65, X70, and X80 to meet required tensile and impact performance.
- Reducing weld defects such as solidification cracking and lack of fusion in automated submerged arc welding.
Specifications
Published by the factory for AK-H08MnMoTiB. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO —— AWS —— GB/T —— |
| Element | Content |
|---|---|
| C | 0.12 |
| Si | 0.15-0.50 |
| Mn | 1.40-2.0 |
| S | ≤0.015 |
| P | ≤0.020 |
| B | 0.10 |
| Mo | 0.20-0.45 |
| Ti | 0.15 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥590 |
| Yield Stress (MPa) | ≥500 |
| Elongation (%) | ≥20 |
| Impact values (J) | ≥50J/-40℃ |
Technical Features
- Chemical composition: C 0.12%, Si 0.15–0.50%, Mn 1.40–2.0%, S ≤0.015%, P ≤0.020%, B 0.10%, Mo 0.20–0.45%, Ti 0.15%
- Deposited metal tensile strength ≥590 MPa, yield stress ≥500 MPa, elongation ≥20%
- Impact energy ≥50 J at minus 40 degrees C.
- Designed for use with fluxes such as AKJ101G and AKJ102G.
- Complies with EN ISO, AWS, and GB/T standards (specific classification numbers not provided)
Use Guide
- Select the appropriate flux (e.g., AKJ101G or AKJ102G) based on the base metal and welding position.
- Ensure the wire and flux are stored in dry conditions to prevent moisture absorption.
- Clean the joint surfaces of rust, oil, paint, and moisture before welding.
- Follow recommended welding parameters for current, voltage, and travel speed to achieve optimal bead shape and mechanical properties.
How It Compares
AK-H08MnMoTiB is a submerged arc wire designed for high-strength pipeline and structural steels. It differs from general-purpose wires like E6013 in that it delivers high strength and low-temperature toughness rather than arc stability on thin sheet. Compared to other high-strength submerged arc wires, its specific combination of boron and titanium improves crack resistance in the weld metal, especially in thick-section or high-restraint joints.
Related Grades
Other welding wire in the same family.
AK-H08MnMoTiB Questions
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