AK-A506NH Low Hydrogen Potassium Type Electrode for Fire- and Weather-Resistant Steel.
A basic-coated, all-position electrode designed for welding LWFR490 refractory and weathering steel, delivering stable arc performance and weld metal with matching fire and weather resistance.
Product Overview
AK-A506NH is a low hydrogen potassium type basic alloy electrode for manual metal arc welding of LWFR490 refractory and weathering steel. It is suitable for AC and DC welding in all positions, with stable arc, low spatter, and easy slag removal.
The deposited weld metal exhibits fire and weather resistance performance equivalent to the base metal, making it suitable for critical structural applications where environmental and thermal durability are required.
Application: This electrode is a special electrode matched with LWFR490 refractory and weather ing steel. It is mainly used for the welding of high-rise steel structures, bridges and other important structures that require fire and weather resistance.
Key Benefits
Stable Arc and Low Spatter.
The potassium-based coating ensures a stable arc across AC and DC currents, reducing spatter and improving weld consistency, especially in overhead and vertical positions.
Easy Slag Removal
The slag formed during welding lifts off easily, minimizing inter-run cleaning and reducing the risk of slag entrapment in subsequent passes.
All-Position Welding Capability
The electrode performs reliably in flat, horizontal, vertical, and overhead positions, allowing one consumable to cover multiple joint orientations without retooling.
Matching Base Metal Performance.
The weld metal matches the fire and weather resistance properties of LWFR490 steel, ensuring long-term structural integrity in exposed or high-temperature environments.
Where It Is Used
- Welding of high-rise steel structures requiring fire and weather resistance.
- Bridge construction and repair where environmental durability is critical.
- Other important structural applications involving LWFR490 refractory and weathering steel.
Who It Is For
- Welding consumable distributors supplying specialty electrodes for structural steel.
- Fabricators and contractors working with LWFR490 steel in demanding environments.
- Maintenance teams responsible for long-life structural integrity in exposed or high-heat zones.
Problems It Solves
- Mismatched weld metal properties in fire- and weather-resistant steel structures due to improper filler metal selection.
- Difficult welding performance on LWFR490 steel with electrodes that lack stable arc or produce excessive spatter.
- Inconsistent slag removal and inter-run cleaning caused by poor slag detachability in critical joints.
Specifications
Published by the factory for AK-A506NH. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification | EN ISO 2560-B E4916 G A AWS A5.5 E7016G GB/T 5117 E5016-G |
| Element | Content |
|---|---|
| C | 0.12 |
| Mn | 0.5-1.3 |
| P | 0.020 |
| S | 0.030 |
| Si | 0.40 |
| Cu | 0.20-0.35 |
| Mo | 0.30-0.50 |
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.
Technical Features
- Basic-coated, low hydrogen potassium type electrode for AC and DC welding.
- Formulated for all-position welding: flat, horizontal, vertical, and overhead.
- Deposited metal chemical composition includes C: 0.12%, Mn: 0.5-1.3%, P: 0.020%, S: 0.030%, Si: 0.40%, Cu: 0.20-0.35%, Mo: 0.30-0.50%
Use Guide
- Select electrode diameter based on joint thickness and position; use recommended current settings for stable arc and minimal spatter.
- Ensure joint surfaces are clean of oil, rust, moisture, and paint before welding to prevent porosity and cracking.
- Store electrodes in sealed packaging; re-dry if exposed to humidity before use to maintain low hydrogen content.
- Remove slag completely between passes to avoid inclusions and ensure sound weld metal continuity.
How It Compares
AK-A506NH and E7016G both belong to the low hydrogen potassium type basic electrode family and are suitable for all-position welding. AK-A506NH is specifically formulated for LWFR490 refractory and weathering steel, providing weld metal with matching fire and weather resistance. Standard E7016G electrodes are designed for general low carbon steel and do not offer the same performance in high-temperature or corrosive environments.
Related Grades
Other welding electrodes in the same family.
AK-A506NH Questions
What standards does AK-A506NH meet?
What is the chemical composition of the deposited metal?
Can this electrode be used with AC and DC power sources?
What types of structures is this electrode suitable for?
What packing is AK-A506NH supplied in?
Can we test AK-A506NH before placing a production order?
Request a Quotation for AK-A506NH
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.