AK-E347-16 Basic Coated Electrode for High-Quality Welding of Stainless Steel and High-Carbon Steels.
A basic-coated electrode designed for high-strength, high-toughness welds in demanding applications, including structures, vessels, and components made from low-purity or high-carbon steels.
Product Overview
AK-E347-16 is a basic-coated welding electrode for manual metal arc welding of stainless steels and high-carbon steels. It is formulated to deliver high strength and toughness in the deposited metal, making it suitable for critical applications where mechanical performance is essential.
The electrode is designed for use in steel structures, boiler and pressure vessel construction, shipbuilding, vehicle and machinery fabrication, and as a buffer layer when welding onto high-carbon steel substrates. It meets the EN ISO 3581-A:E (19 19) Nb R 1 2 and AWS A5.4 E347-16 classifications.
Application: For welding of steel structures, boiler and vessel construction, vehicle construction, shipbuilding and machinery construction and buffer layer when constru cted on high carbon steel.
Key Benefits
High Strength and Toughness.
The deposited metal achieves a tensile strength of at least 520 MPa and elongation of at least 25 percent, ensuring reliable performance under stress and impact loading.
Suitable for Low-Purity and High-Carbon Steels.
The electrode maintains consistent weld quality when joining steels with elevated carbon content or lower purity, reducing the risk of cracking and ensuring sound joint integrity.
Stable Arc and Controlled Weld Pool.
The basic coating provides a stable arc and controlled molten pool, which supports clean, well-formed welds in all positions with minimal spatter.
All-Position Welding Capability
AK-E347-16 can be used in flat, horizontal, vertical, and overhead positions, enabling continuous welding without changing consumables.
Where It Is Used
- Welding of stainless steel structures and pressure vessels.
- Boiler and vessel construction requiring high weld integrity.
- Shipbuilding and vehicle fabrication with high-strength requirements.
- Machinery construction involving high-carbon or low-purity base metals.
- Buffer layer welding on high-carbon steel substrates.
Who It Is For
- Welding consumable distributors supplying electrodes for industrial and structural welding.
- Fabricators working with stainless steels and high-carbon steels in demanding environments.
- Contractors in shipbuilding, pressure vessel, and machinery sectors requiring certified, consistent consumables.
Problems It Solves
- Achieving high-strength, high-toughness welds in stainless steels and high-carbon steels where standard electrodes may lead to cracking or poor performance.
- Welding low-purity or high-carbon base metals without compromising weld quality or integrity.
- Maintaining consistent electrode performance across multiple weld positions without requalification or parameter changes.
Specifications
Published by the factory for AK-E347-16. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 3581-A:E （19 19）Nb R 1 2 |
| Classification 2 | AWS A5.4 E347-16 |
| Element | Content |
|---|---|
| C | 0.08 |
| SI | 1.00 |
| Mn | 0.5-2.50 |
| S | 0.03 |
| P | 0.03 |
| Ni | 9.0-11.0 |
| Cr | 18.0-21.0 |
| Mo | 0.75 |
| Cu | 0.75 |
| Property | Value |
|---|---|
| Tensile strength (MPa) | ≥520 |
| Elongation (%) | ≥ 25 |
| Diameter | Current range |
|---|---|
| 2.5mm | F/H-60-80A V/OH-40-70A |
| 3.2mm | F/H-80-120A V/OH-60-100A |
| 4.0mm | F/H-100-150A V/OH-80-130A |
Technical Features
- Basic coating for high-quality welds with low hydrogen and good mechanical properties.
- Deposited metal tensile strength at least 520 MPa and elongation at least 25 percent.
- Chemical composition includes Cr 18.0-21.0%, Ni 9.0-11.0%, Mo 0.75%, C 0.08%, Si 1.00%, Mn 0.5-2.50%, S 0.03%, P 0.03%, Cu 0.75%
- Supplied in 2.5 mm, 3.2 mm, and 4.0 mm diameters with published current ranges for each.
Use Guide
- Select diameter by joint thickness and position: 2.5 mm for thin sections, 3.2 mm for medium, 4.0 mm for thicker sections.
- Use 60-80 A in flat and horizontal positions, 40-70 A in vertical and overhead positions for 2.5 mm electrodes.
- Use 80-120 A in flat and horizontal positions, 60-100 A in vertical and overhead positions for 3.2 mm electrodes.
- Use 100-150 A in flat and horizontal positions, 80-130 A in vertical and overhead positions for 4.0 mm electrodes.
- Keep electrodes dry in sealed packaging; re-dry if exposed to moisture before use.
- Clean joint surfaces from oil, rust, paint, and moisture before welding to prevent defects.
How It Compares
AK-E347-16 and E308-16 both weld stainless steels, but they differ in chemistry and application. E308-16 is designed for general-purpose austenitic stainless steel welding with lower nickel content. AK-E347-16 contains niobium (Nb) and higher nickel levels, which improve resistance to intergranular corrosion and make it suitable for high-carbon steels and high-temperature service. It is not a direct substitute for E308-16 in all cases.
Related Grades
Other welding electrodes in the same family.
AK-E347-16 Questions
What classifications does AK-E347-16 meet?
What are the mechanical properties of the deposited metal?
What is the chemical composition of the deposited metal?
What current ranges are recommended for each diameter?
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Can we test AK-E347-16 before placing a production order?
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