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AWS A 5.22 E309LMoT1-1
1kg,5kg,12.5kg,15kg
1lb;2lb;4.5lb;11lb;15lb;20lb;33lb;44lb
0.6mm;0.8mm;0.9mm;1.0mm;1.2mm;1.6;2.0mm
0.023;0.030in;0.035in;3/64″;0.045;1/16″;5/64″
D100,D200,D270,D300,BS300,K300
Acceptable (design the pack with your logo)
15 Days
Product Description
1）Classification: This is a gas-shielded, all-position, rutile-type flux-cored welding wire that fully conforms to the AWS A5.22 standard for stainless steel flux-cored electrodes.
2）Composition (E309LMo): The "E309LMo" denotes the weld metal's chemical composition. It is a modified 309L stainless steel with the critical addition of molybdenum (Mo). The "L" signifies low carbon content (≤0.030%) to minimize carbide precipitation and enhance intergranular corrosion resistance.
3）Welding Position (T1): The "T1" designation indicates that this wire offers all-position weldability, performing excellently in flat, horizontal, vertical-up, and overhead positions, providing extensive versatility for complex fabrication.
4）Shielding Mechanism (-1): The "-1" in the classification specifies that this wire requires 100% Carbon Dioxide (CO2) as the external shielding gas. This pure CO2 provides the necessary arc stability and robust weld pool protection.
5）Enhanced Corrosion Resistance: The significant addition of molybdenum (typically 2.0-3.0%) in the weld metal dramatically improves its resistance to pitting and crevice corrosion, particularly in aggressive chloride-containing environments, and also enhances creep strength at elevated temperatures.
6）Key Applications: This wire is predominantly used for welding dissimilar metals, such as joining austenitic stainless steels (including molybdenum-bearing types like 316L) to carbon steels or low-alloy steels. It is also ideal for cladding applications (overlaying carbon steel with stainless steel) and for welding 309LMo stainless steel in industries like pulp and paper, chemical processing, and heat exchangers.
AWS A 5.22 E309LMoT1-1 Stainless Steel Flux Cored Wire Welding.pdf
Standard： AWS A5.22 E309LMoT1-1 | Chemical Composition % | ||||||||||||
C | Mn | Si | Ni | Cr | Mo | S | P | ||||||
Grade E309LMoT1-1 | ≤ 0.04 | 0.5 ~ 2.5 | ≤ 1.0 | 12.0 ~ 16.0 | 22.0 ~ 25.0 | 2.0 ~ 3.0 | ≤ 0.03 | ≤ 0.04 | |||||
Type | Spool (MIG) | ||||||||||||
Specification ( MM ) | 0.8、0.9、1.0、1.2、1.6 | Pack | S100/1kg S200/5kg S270,S300/12.5kg-20kg | ||||||||||
Mechanical Properties | Rm / MPa | A (%) | |||||||||||
≥ 520 | ≥ 35 | ||||||||||||
MIG Welding | （MM） | 1.2 | 1.6 | ||||||||||
Current - A | 120 ~ 250 | 160 ~ 300 | |||||||||||
AWS A 5.22 E309LMoT1-1 Stainless Steel Flux Cored Welding Wire Parameters
| Diameter | Process | ||
| in | mm | ||
| 0.023 | 0.6 | FCAW | |
| 0.03 | 0.8 | FCAW | |
| 0.035 | 0.9 | FCAW | |
| 0.039 | 1.0 | FCAW | |
| 1/25.4” | |||
| 0.045 | 1.2 | FCAW | |
| 3/64” | |||
| 1/16” | 1.6 | FCAW | |
| Weight | 0.5kg | 1kg | 2kg | 5kg | 12.5kg | 15kg | |||||
| 1 lb | 2 lb | 4 lb | 11 lb | 25 lb | 33 lb | ||||||
AWS A5.22 E309LMoT1-1 is a premium **gas-shielded, all-position, flux-cored welding wire** designed for specialized **stainless steel welding** applications.
This classification ensures it adheres to stringent American Welding Society standards, making it a reliable choice for critical **fabrication projects** requiring exceptional **corrosion resistance** and weld quality.
The "E" denotes an electrode.
"309LMo" refers to the weld metal's chemical composition: a modified **309L stainless steel** with a crucial addition of **molybdenum (Mo)**.
The "L" signifies low carbon content for enhanced **intergranular corrosion resistance**.
"T1" specifies that this wire is an **all-position welding wire**, suitable for flat, horizontal, vertical-up, and overhead positions.
The "-1" indicates that it requires **100% Carbon Dioxide (CO2)** as the external **shielding gas** for optimal performance and protection of the **weld pool**.
The addition of **molybdenum** to the 309L weld metal is a critical feature that provides significantly enhanced resistance to **pitting and crevice corrosion**.
This is especially beneficial in harsh, chloride-containing environments, where standard 309L might be susceptible.
Molybdenum also contributes to improved **creep strength** at elevated temperatures, making it ideal for demanding applications in **chemical processing** and **heat exchangers**.
This welding wire is primarily designed for welding **309LMo stainless steel**.
However, its robust alloy content makes it exceptionally well-suited for joining **dissimilar metals**, such as **austenitic stainless steels (including 316L and other molybdenum-bearing grades) to carbon steels or low-alloy steels**.
It's also excellent for **cladding applications**, overlaying carbon steel with a corrosion-resistant stainless steel layer.
The "T1" designation is invaluable as it signifies **all-position weldability**.
This means the wire performs excellently in **flat (1G), horizontal (2F), vertical-up (3F), and overhead (4F) positions**.
This versatility is a major asset for complex **stainless steel fabrication** and **pipeline welding**, where various joint orientations are encountered, leading to increased efficiency and reduced setup time.
The "-1" in its classification specifies that this wire requires **100% Carbon Dioxide (CO2)** as the external **shielding gas**.
This pure CO2 provides the necessary deep penetration and a robust arc, which is crucial for properly fusing the alloyed weld metal and achieving excellent **mechanical properties** and bead shape.
Adequate gas flow is essential to protect the **molten weld pool** from atmospheric contamination, ensuring a sound **stainless steel weld**.
The "L" in E309LMoT1-1 signifies **low carbon content** (typically $\le 0.030\%$) in the weld deposit.
This is vital for minimizing **carbide precipitation** in the heat-affected zone (HAZ) during welding, a phenomenon that can lead to sensitization.
By preventing sensitization, the weld metal maintains its excellent **intergranular corrosion resistance**, ensuring the long-term durability of the **stainless steel component** in corrosive environments.
This wire is extensively utilized in industries demanding superior **corrosion resistance**, especially against chlorides, and high-temperature strength.
Common applications include **chemical processing plants, pulp and paper mills, offshore oil and gas structures, heat exchangers, and furnace components**.
It's particularly valuable for joining **stainless steel to carbon steel** or for **clad steel fabrication** where robust and corrosion-resistant joints are paramount.
Welders can expect **exceptional arc stability** with a smooth, controlled welding process, leading to consistent results.
It typically produces **very low spatter levels**, which significantly reduces post-weld cleaning time.
Additionally, it offers an **attractive bead appearance** and the slag is usually **easily removable**, contributing to high **welding productivity** and a superior finish on **stainless steel components**.
Preheating requirements largely depend on the **thickness of the materials** being welded and the specific application.
For thin sections of stainless steel, preheating is often not necessary.
However, when welding **thicker sections of carbon or low-alloy steel to stainless steel**, a mild preheat may be recommended to reduce thermal stresses and prevent hydrogen-induced cracking on the ferritic side of the joint, ensuring optimal **weld integrity**.
The addition of **molybdenum** to the **309LMo weld metal** significantly enhances its resistance to **pitting and crevice corrosion**.
This is particularly critical in environments containing chlorides, such as saltwater or specific chemical solutions, where other stainless steels might be prone to localized corrosion.
Molybdenum helps to stabilize the passive film on the stainless steel surface, providing superior **corrosion protection** for the welded assembly.
E309LMoT1-1, being a **rutile-type flux-cored wire**, is known for producing a **well-formed and easily removable slag**.
The slag typically detaches readily, often self-peeling, which minimizes the need for extensive post-weld cleaning.
This ease of slag removal contributes to higher **welding efficiency** and a cleaner final **weld appearance** on **stainless steel components**, saving valuable time in **fabrication**.
Common wire diameters for AWS A5.22 E309LMoT1-1 typically include **0.035 inch (0.9 mm), 0.045 inch (1.2 mm), and 1/16 inch (1.6 mm)**.
The choice of wire diameter depends on factors such as material thickness, desired deposition rate, and the specific **welding position** being used.
Thinner wires offer more control for intricate work, while thicker wires are preferred for heavier sections and higher productivity in **stainless steel fabrication**.
To ensure optimal welding performance and prevent moisture pick-up, **AWS A5.22 E309LMoT1-1 wire** should be stored in a **dry, cool environment**, preferably in its original, sealed packaging.
Exposure to high humidity can degrade the flux components, potentially leading to issues like porosity or an unstable arc during **stainless steel welding**.
Proper storage is crucial for consistent **weld quality** and preventing costly rework.
Yes, the **309LMo weld metal** is formulated with a controlled amount of delta ferrite, which significantly improves its resistance to **hot cracking** (solidification cracking).
This characteristic is particularly important when welding **dissimilar metals** or highly restrained joints, as it helps to accommodate thermal stresses during solidification, ensuring a robust and crack-free **weld bead** and enhancing **weld integrity**.
Typical welding parameters for AWS A5.22 E309LMoT1-1 vary based on wire diameter, material thickness, and joint configuration.
However, general starting points for voltage can range from **22-28V** and amperage from **120-280A**.
It's crucial to consult the manufacturer's specific recommendations for the exact wire diameter you are using, as optimizing these parameters is vital for achieving the best **weld penetration, bead profile, and overall weld quality** in your **stainless steel applications**.
Yes, AWS A5.22 E309LMoT1-1 is an excellent choice for **cladding applications** where a layer of **stainless steel** (often for corrosion resistance) is deposited onto a **carbon steel or low-alloy steel** substrate.
Its robust chemical composition, including molybdenum, allows it to handle dilution from the base metal while maintaining superior **corrosion resistance**, making it ideal for creating protective overlays in harsh environments.
The primary difference is the enhanced **corrosion resistance** provided by the **molybdenum addition**.
While standard 309L wires are great for joining dissimilar metals, E309LMoT1-1 offers superior resistance to **pitting and crevice corrosion**, making it a better choice for environments with chlorides or where a higher level of corrosion protection is required.
Both are excellent for **dissimilar metal welding**, but E309LMoT1-1 is the premium choice for more aggressive conditions in **stainless steel fabrication**.
When used with the correct **100% CO2 shielding gas** and proper welding parameters, E309LMoT1-1 exhibits good resistance to porosity.
The flux system, combined with the CO2 shield, effectively protects the molten weld pool from atmospheric contaminants like nitrogen and oxygen, which are common causes of **weld porosity**.
Ensuring proper gas flow rate and maintaining a clean weld area are also essential for achieving **porosity-free stainless steel welds**.
Yes, due to its 309LMo composition, which includes molybdenum, E309LMoT1-1 is well-suited for **high-temperature service environments** and applications requiring improved **creep strength**.
The molybdenum contributes to better strength and stability at elevated temperatures compared to stainless steels without this addition, making it a reliable choice for components in industries like **power generation** and **chemical processing** where both **strength and corrosion resistance** are required at high operating temperatures in **stainless steel structures**.
