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AWS A 5.22 E309LT1-1
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, rutile-type, all-position flux-cored welding wire that meets the stringent requirements of the AWS A5.22 standard for stainless steel flux-cored electrodes.
2）Composition (E309L): The "E309L" indicates the weld metal's chemical composition, designed primarily for welding 309L stainless steel. The "L" signifies a low carbon content (typically ≤0.030%), crucial for minimizing carbide precipitation and enhancing intergranular corrosion resistance.
3）Welding Position (T1): The "T1" means this wire offers all-position weldability, allowing for excellent performance in flat, horizontal, vertical-up, and overhead positions.
4）Shielding Mechanism (-1): The "-1" in the classification specifies that this wire requires 100% Carbon Dioxide (CO2) as the external shielding gas. This provides optimal arc stability and proper weld pool protection for consistent results.
5）Performance Characteristics: It is known for its stable arc, low spatter levels, excellent bead appearance, and easy slag removal. The weld metal typically contains an appropriate amount of delta ferrite, contributing to good crack resistance.
6）Applications: This wire is particularly suited for welding dissimilar metals, such as joining stainless steel to carbon steel or low-alloy steel. It's also widely used for welding 309L stainless steel, for the first layer (cladding) on carbon steel, and in industries like petrochemicals, pressure vessels, and furnace parts, where high strength, heat, and corrosion resistance are vital.
AWS A 5.22 E309LT1-1 Stainless Steel Flux Cored Wire Welding.pdf
Standard： AWS A5.22 E309LT1-1 | Chemical Composition % | |||||||||||||
C | Mn | Si | Ni | Cr | Mo | Cu | S | P | ||||||
Grade E309LT1-1 | ≤ 0.04 | 0.5 ~ 2.5 | ≤ 1.0 | 12.0 ~ 14.0 | 22.0 ~ 25.0 | ≤0.50 | ≤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 E309LT1-1 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 E309LT1-1 is a **gas-shielded, all-position, flux-cored welding wire** specifically designed for welding **stainless steel**, particularly when joining **dissimilar metals**.
This classification ensures it adheres to strict American Welding Society standards, making it a reliable choice for demanding **fabrication projects** requiring high-quality **stainless steel welds**.
The "E" indicates an electrode.
"309L" refers to the weld metal's chemical composition, primarily for **309L stainless steel**, with "L" indicating low carbon content for enhanced **corrosion resistance**.
"T1" specifies that this wire is an **all-position welding wire**, suitable for flat, horizontal, vertical-up, and overhead positions.
The "-1" signifies that it requires **100% Carbon Dioxide (CO2)** as the external **shielding gas** for optimal performance and protection of the **weld pool**.
This wire offers several key benefits, including **excellent arc stability**, **low spatter levels**, and an **attractive bead appearance**.
Its robust metallurgical design provides **good crack resistance** in the weld metal.
Most importantly, its 309L composition makes it ideal for joining **dissimilar metals**, such as **stainless steel to carbon steel or low-alloy steel**, which is a common requirement in many industrial applications.
This welding wire is primarily designed for welding **309L stainless steel**.
Due to its higher alloy content, it's also very effective for joining **austenitic stainless steels** (like 304L, 316L) to **carbon steels** or **low-alloy steels**.
It's also suitable for providing a **buffer layer or cladding** on carbon steel before welding with a more specific stainless steel filler metal, ensuring optimal **corrosion resistance**.
The "T1" designation is crucial because it indicates **all-position weldability**.
This means the wire can be used effectively for welding in **flat (1G), horizontal (2F), vertical-up (3F), and overhead (4F) positions**.
This versatility makes it an extremely valuable product for complex **stainless steel fabrication** and **structural welding**, especially when dealing with various joint orientations in demanding environments.
The "-1" in its classification clearly specifies that this wire requires **100% Carbon Dioxide (CO2)** as the external **shielding gas**.
This pure CO2 gas provides the necessary deep penetration and robust arc characteristics associated with this particular wire for effective **stainless steel welding**.
Always ensure adequate gas flow to protect the **weld pool** from atmospheric contamination.
The "L" in E309LT1-1 signifies **low carbon content** in the weld deposit, typically 0.030% or less.
This is vital for minimizing **carbide precipitation** in the heat-affected zone (HAZ) during welding, which can lead to sensitization.
By preventing sensitization, the weld metal maintains its excellent **intergranular corrosion resistance**, ensuring the long-term integrity of the **stainless steel component** in corrosive environments.
This wire is widely utilized in industries that involve joining **dissimilar metals**, such as **power generation, petrochemicals, furnace and boiler manufacturing, and general heavy fabrication**.
Common applications include welding **transition joints, clad steel applications, and repairs** where **stainless steel components** need to be joined to **carbon or low-alloy steels**, requiring both strength and **corrosion resistance**.
E309LT1-1 is specifically engineered for **welding dissimilar metals**, excelling at joining **stainless steel to carbon steel or low-alloy steel**.
Its higher alloy content (chromium and nickel) helps to dilute the carbon steel side of the joint, preventing excessive martensite formation and reducing the risk of cracking.
This makes it an ideal choice for creating strong, ductile, and **corrosion-resistant joints** between different metal types in **fabrication projects**.
Welders often appreciate the **stable arc** and controlled weld pool that E309LT1-1 provides, which contributes to ease of use in **all positions**.
It also produces a **minimal amount of spatter** and a **smooth, appealing bead profile**.
The slag is typically well-formed and **easy to remove**, reducing post-weld cleaning time and improving overall **welding productivity**.
Preheating requirements for welding **dissimilar metals** with E309LT1-1 can vary.
While generally not required for thin sections of stainless steel, it is often recommended for **thicker sections of carbon or low-alloy steel** to reduce thermal stresses and prevent hydrogen-induced cracking, especially on the ferritic side of the joint.
Always consult relevant **welding procedure specifications (WPS)** for critical applications to ensure proper **weld integrity**.
E309LT1-1 typically produces a **medium to heavy slag** that provides excellent support for the weld metal, especially in out-of-position welding.
Despite its volume, the slag is generally **easily removable**, often detaching with minimal effort using a chipping hammer or wire brush.
This feature helps maintain good **welding productivity** and simplifies post-weld finishing on **stainless steel components**.
Common wire diameters for AWS A5.22 E309LT1-1 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 E309LT1-1 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 **309L weld metal** is designed with a controlled amount of delta ferrite, which significantly improves its resistance to **hot cracking** (solidification cracking).
This characteristic is especially 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**.
Typical welding parameters for AWS A5.22 E309LT1-1 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 **stainless steel applications**.
Yes, AWS A5.22 E309LT1-1 is an excellent choice for **cladding applications** where a layer of **stainless steel** is deposited onto a **carbon steel or low-alloy steel** substrate.
Its ability to handle dilution from the base metal while maintaining suitable **corrosion resistance** makes it ideal for these types of overlay applications, often as a buttering layer before a final stainless steel pass to enhance **corrosion protection**.
While **solid 309L wires (GMAW)** offer a very clean arc and minimal spatter, E309LT1-1 **flux-cored wire** typically provides **higher deposition rates** and improved tolerance to **mill scale and surface contaminants**.
The flux core enhances arc stability and bead shape, especially in out-of-position welding.
Both require shielding gas, but the flux-cored option can be more forgiving and productive in certain **fabrication environments**.
When used with the correct **100% CO2 shielding gas** and proper welding parameters, E309LT1-1 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**.
Given its 309L composition, which is designed for higher temperature applications than 304L, E309LT1-1 is suitable for certain **high-temperature service environments**.
Its resistance to **carbide precipitation** at elevated temperatures makes it a reliable choice for components like **furnace parts, heat exchangers, and boiler tubes** where both **strength and corrosion resistance** are required at elevated operating temperatures in **stainless steel structures**.
