AK-E71T-5M Flux-Cored Wire for Heavy Section Welding in Pressure Vessels and Offshore Structures.
A flux-cored wire with smooth arc performance, low melting point, and strong weldability for high-productivity welding of thick-section steel in demanding environments.
Product Overview
AK-E71T-5M is a flux-cored welding wire designed for the welding of heavy sections in pressure vessels, construction equipment, and offshore structures. It is formulated for smooth arc performance and consistent weld metal deposition under demanding conditions.
The wire is manufactured from high-quality materials and delivers strong weldability, corrosion resistance, high thermal conductivity, high electrical conductivity, and excellent processing performance. It meets the EN ISO 17632-A:T 42 4 B M 3 H5 and AWS A5.20 E71T-5M GB/T 10045 E501T-1 classifications.
Application: The Typical Applications are welding of heavy sections in pressure vessels, Construction equipment and Offshore structures.
Key Benefits
Smooth Arc and Stable Weld Pool.
The flux-cored formulation provides a smooth welding arc and stable molten pool, reducing spatter and improving weld bead appearance, especially in vertical and overhead positions.
Low Melting Point and High Thermal Conductivity.
The low melting point and high thermal conductivity allow for rapid heat transfer and efficient fusion, supporting high deposition rates and reducing distortion in thick-section welding.
Strong Weldability and Corrosion Resistance.
The wire delivers strong weldability across a wide range of welding parameters and provides good resistance to corrosion in the deposited weld metal.
High Electrical Conductivity and Processing Performance.
High electrical conductivity ensures consistent current delivery and reduces energy loss during welding, while excellent processing performance supports reliable feeding in semi-automatic welding equipment.
Where It Is Used
- Welding of heavy sections in pressure vessels.
- Construction equipment fabrication and repair.
- Offshore structure assembly and maintenance.
- High-productivity welding in structural steel applications.
Who It Is For
- Welding consumable distributors supplying flux-cored wires for industrial and marine applications.
- Fabricators working with thick-section carbon and low-alloy steels in pressure vessels and heavy machinery.
- Contractors involved in offshore and marine construction requiring consistent, high-performance welding wire.
Problems It Solves
- Achieving consistent weld quality on thick-section joints where poor arc stability or erratic metal transfer leads to defects.
- Managing high heat input and distortion in heavy section welding with wires that lack thermal efficiency.
- Sourcing a flux-cored wire that performs reliably across multiple positions and joint types without frequent parameter adjustments.
Specifications
Published by the factory for AK-E71T-5M. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 17632- A:T 42 4 B M 3 H5 |
| Classification 2 | AWS A5.20 E71T-5M GB/T 10045 E501T-1 |
| Element | Content |
|---|---|
| C | 0.12 |
| Mn | 1.75 |
| P | 0.03 |
| S | 0.03 |
| Si | 0.90 |
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.
| Diameter | Current range |
|---|---|
| 1.2mm | :24-30V / 160-300A |
| 1.6mm | :24-30V / 180-300A |
Technical Features
- Flux-cored wire meeting EN ISO 17632-A:T 42 4 B M 3 H5 and AWS A5.20 E71T-5M GB/T 10045 E501T-1 classifications.
- Chemical composition: C 0.12%, Mn 1.75%, P 0.03%, S 0.03%, Si 0.90%
- Recommended welding parameters: 1.2 mm diameter at 24–30 V / 160–300 A, 1.6 mm diameter at 24–30 V / 180–300 A.
- Supplied in 1.2 mm and 1.6 mm diameters.
Use Guide
- Select the appropriate diameter based on joint thickness and welding position: 1.2 mm for thinner sections and higher control, 1.6 mm for higher deposition rates in heavy sections.
- Set voltage within the 24–30 V range and current within the recommended limits: 160–300 A for 1.2 mm, 180–300 A for 1.6 mm.
- Ensure the wire is stored in a dry environment and protected from moisture before use to maintain arc stability and prevent porosity.
- Clean the joint surfaces of rust, oil, paint, and moisture prior to welding to ensure sound weld metal and avoid defects.
How It Compares
AK-E71T-5M and E71T-1 both belong to the E71T-5M classification and are flux-cored wires for carbon and low-alloy steels. E71T-5M is designed for use with CO2 or mixed shielding gases and offers better weldability and lower spatter than E71T-1. E71T-1 is typically used with CO2 shielding and may require higher heat input for thick sections. AK-E71T-5M provides improved arc stability and bead appearance, especially in vertical and overhead positions.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-E71T-5M Questions
What are the recommended welding parameters for AK-E71T-5M?
Which standards does AK-E71T-5M meet?
What is the chemical composition of the deposited metal?
What diameters are available?
What packing is AK-E71T-5M supplied in?
Can we test AK-E71T-5M before placing a production order?
Request a Quotation for AK-E71T-5M
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.