AK-E11018-M Low Hydrogen Potassium Electrode for High-Strength Low Alloy Steel Welding.
A high-deposition, low-hydrogen potassium-coated electrode for manual metal arc welding of high-strength low alloy steels with excellent mechanical properties and low-temperature impact toughness.
Product Overview
AK-E11018-M is an iron powder low hydrogen potassium type covered electrode designed for manual metal arc welding of high-strength low alloy steels. The electrode delivers a stable arc, minimal spatter, and a smooth, attractive weld bead with easy slag removal and consistent X-ray quality.
It is formulated to meet the mechanical property requirements of high-strength steels such as Q690 and similar grades. The deposited metal exhibits high tensile strength, good ductility, and excellent low-temperature impact toughness, making it suitable for critical structural applications.
Application: Suitable for welding of same grade level of low alloy in engineering machinery, such as Q690 and etc.
Key Benefits
High Deposition Rate with Stable Arc.
The iron powder content and potassium coating enable a high deposition rate and consistent arc stability across the recommended current range, reducing welding time and improving productivity.
Clean Weld Bead with Minimal Spatter.
The electrode produces a smooth, well-shaped weld bead with few spatter particles, reducing post-weld cleaning and improving surface finish.
Easy Slag Removal
The slag layer detaches easily after cooling, minimizing the need for chipping and wire brushing between passes.
Excellent Low-Temperature Impact Toughness.
The deposited metal achieves a minimum impact value of 27 J at minus 50 degrees C, ensuring reliable performance in cold environments.
Where It Is Used
- Welding of high-strength low alloy steels such as Q690 in engineering machinery.
- Structural components requiring high tensile strength and toughness.
- Fabrication of heavy equipment exposed to low-temperature service conditions.
Who It Is For
- Welding consumable distributors supplying electrodes for high-strength steel applications.
- Engineering machinery and heavy equipment fabricators.
- Contractors working on structures requiring high toughness at low temperatures.
Problems It Solves
- Achieving consistent mechanical properties and low-temperature impact toughness in welds on high-strength low alloy steels like Q690.
- Reducing post-weld cleaning time through easy slag removal and low spatter.
- Maintaining arc stability and weld quality on thick-section steels with a single electrode type.
Specifications
Published by the factory for AK-E11018-M. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 18275-A E 69 5 Z 15Mn2NiMoB 3 2 |
| Classification 2 | AWS A5.5 E11018-M-H4 |
| Classification 3 | GB/T 5118 E8018-M |
| Element | Content |
|---|---|
| C | 0.10 |
| Si | 0.60 |
| Mn | 1.00-1.80 |
| Ni | 1.25-2.5 |
| Cr | 0.40 |
| Mo | 0.25-0.50 |
| V | 0.05 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥760 |
| Yield Stress (MPa) | 680-760 |
| Elongation (%) | ≥20 |
| Impact values (J) | ≥27J/-50℃ |
| Diameter | Current range |
|---|---|
| 2.5mm | F/H-80-110A V/OH-50-80A |
| 3.2mm | F/H-100-130A V/OH-90-120A |
| 4.0mm | F/H-130-180A V/OH-120-160A |
| 5.0mm | F/H-180-230A |
Technical Features
- Low hydrogen potassium coating for controlled hydrogen content and good crack resistance.
- Deposited metal tensile strength at least 760 MPa, yield stress between 680 MPa and 760 MPa.
- Elongation at least 20 percent and impact energy at least 27 J at minus 50 degrees C.
- Chemical composition includes carbon 0.10%, silicon 0.60%, manganese 1.00-1.80%, nickel 1.25-2.5%, chromium 0.40%, molybdenum 0.25-0.50%, vanadium 0.05%
- Supplied in 2.5 mm, 3.2 mm, 4.0 mm, and 5.0 mm diameters with published current ranges.
Use Guide
- Select electrode diameter based on joint thickness and welding position. Use 2.5 mm for thin sections and 5.0 mm for thicker materials.
- Set welding current within the recommended range: 2.5 mm (flat/horizontal 80-110 A, vertical/overhead 50-80 A), 3.2 mm (flat/horizontal 100-130 A, vertical/overhead 90-120 A), 4.0 mm (flat/horizontal 130-180 A, vertical/overhead 120-160 A), 5.0 mm (flat/horizontal 180-230 A).
- Ensure joint surfaces are clean and free of oil, rust, moisture, and paint before welding.
- Store electrodes in sealed packaging and re-bake if exposed to air for extended periods.
How It Compares
AK-E11018-M and E11018-M both belong to the same classification group and are low hydrogen potassium electrodes for high-strength steels. AK-E11018-M is designed for high deposition and stable arc performance, making it suitable for thick-section welding. Basic-coated electrodes may offer lower hydrogen levels but require stricter storage and handling. Cellulosic electrodes provide deeper penetration but produce more spatter and are less suitable for high-strength applications.
Related Grades
Other welding electrodes in the same family.
AK-E11018-M Questions
What are the recommended welding currents for each diameter?
Which standards does this electrode meet?
What mechanical properties does the deposited metal achieve?
Can I get technical data and packing details before ordering?
What packing is AK-E11018-M supplied in?
Can we test AK-E11018-M before placing a production order?
Request a Quotation for AK-E11018-M
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.