AK-E309LMoT1-1 Flux-Cored Stainless Steel Wire for High-Performance Welding.
A flux-cored stainless steel wire designed for all-position welding with smooth spray transfer at higher amperages and globular transfer at lower amperages, offering easy slag removal and high resistance to pitting and stress corrosion.
Product Overview
AK-E309LMoT1-1 is a flux-cored stainless steel wire intended for all-position welding of high-strength, corrosion-resistant materials in demanding environments. It is formulated to deliver consistent performance when used with 75% Ar-25% CO2 or 100% CO2 shielding gas.
At higher amperages, the wire produces a smooth spray transfer, while at lower amperages, it transitions to a globular transfer mode. The slag formed during welding is easily removed across all amperage ranges, reducing post-weld cleaning time.
Application: Requiring high strength and resistance to pitting and stress corrosion for use in marine, chemical and petroleum industries. Can be used to weld 22% Cr duplex’s (UNS S31803) and 25 Cr Duplex’s to type 316/316L and to carbon steel.
Key Benefits
Smooth Spray Transfer at Higher Amperages.
The wire delivers a stable, smooth spray transfer when operated at higher amperages, resulting in a clean, consistent weld bead with minimal spatter and good weld pool control.
Globular Transfer at Lower Amperages.
At lower amperages, the wire maintains a globular transfer mode, allowing for reliable arc stability and consistent deposition in low-current applications.
Easy Slag Removal
The slag produced is easily removed after each pass, regardless of amperage, reducing the need for extensive chipping or grinding between passes.
High Resistance to Pitting and Stress Corrosion.
The wire is designed for use in marine, chemical, and petroleum industries where resistance to pitting and stress corrosion is critical.
Where It Is Used
- Welding of 22% Cr duplex (UNS S31803) and 25 Cr duplex steels to type 316/316L stainless steel.
- Welding of duplex steels to carbon steel in high-stress, corrosive environments.
- Applications requiring high strength and resistance to pitting and stress corrosion in marine and chemical processing equipment.
Who It Is For
- Welding consumable distributors supplying high-performance stainless steel welding solutions.
- Fabricators and maintenance teams working with duplex and stainless steels in marine and chemical industries.
- Contractors involved in offshore platforms, chemical vessels, and petroleum infrastructure.
Problems It Solves
- Achieving high weld metal resistance to pitting and stress corrosion in aggressive environments without compromising strength.
- Maintaining consistent arc performance and slag removal across a range of amperages during all-position welding.
- Welding dissimilar materials such as duplex steels to 316/316L or carbon steel with a single, reliable filler metal.
Specifications
Published by the factory for AK-E309LMoT1-1. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Standard | Designation |
|---|---|
| Classification 1 | EN ISO 17633- B:TS 309LMo-F C1 1 |
| Classification 2 | AWS A5.22 E309LMoT1-1 |
| Classification 3 | GB/T 17853 E309LMoT1-1 |
| Element | Content |
|---|---|
| C | 0.04 |
| Mn | 0.5-2.50 |
| P | 0.04 |
| S | 0.03 |
| Si | 1.00 |
| Ni | 12.0-16.0 |
| Cr | 21.0-25.0 |
| Mo | 2.0-3.0 |
| Cu | 0.75 |
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 | :22-36V / 120-260A |
| 1.6mm | :26-38V / 200-300A |
Technical Features
- Flux-cored stainless steel wire for all-position welding with 75% Ar-25% CO2 or 100% CO2 shielding gas.
- Smooth spray transfer at higher amperages, globular transfer at lower amperages.
- Slag easily removed at all amperage levels.
- Chemical composition: C 0.04%, Mn 0.5-2.50%, P 0.04%, S 0.03%, Si 1.00%, Ni 12.0-16.0%, Cr 21.0-25.0%, Mo 2.0-3.0%, Cu 0.75%
- Supplied in 1.2 mm and 1.6 mm diameters.
Use Guide
- Use 1.2 mm wire with 22-36 V and 120-260 A; use 1.6 mm wire with 26-38 V and 200-300 A.
- Ensure proper shielding gas flow and correct gas mixture (75% Ar-25% CO2 or 100% CO2) for consistent arc stability and weld quality.
- Clean joint surfaces of oil, rust, paint, and moisture before welding to avoid contamination and porosity.
- Store the wire in sealed packaging and avoid exposure to moisture; re-dry if exposed before use.
How It Compares
AK-E309LMoT1-1 is designed for high corrosion resistance and strength in duplex and stainless steel welding. It differs from standard E308L wires by having higher chromium, molybdenum, and nickel content, which improves resistance to pitting and stress corrosion. It is not intended for use where low hydrogen is required, nor for welding to carbon steel without proper preheat and interpass temperature control.
Related Articles
Technical background on this grade from the AKWELD knowledge centre.
Related Grades
Other welding wire in the same family.
AK-E309LMoT1-1 Questions
What diameters are available for AK-E309LMoT1-1?
What shielding gases are recommended?
What are the recommended welding parameters?
What standards does this wire meet?
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Can we test AK-E309LMoT1-1 before placing a production order?
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