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AWS A 5.22 E308LT1-4
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 flux-cored welding wire that adheres to the AWS A5.22 standard for stainless steel flux-cored electrodes.
2）Composition (E308L): The "E308L" signifies the weld metal's chemistry, intended for welding 308L stainless steels. The "L" denotes low carbon content to minimize carbide precipitation and enhance intergranular corrosion resistance.
3）Welding Position (T1): The "T1" designation indicates that this wire is suitable for all welding positions: flat, horizontal, vertical-up, and overhead.
4）Shielding Mechanism (-4): The "-4" specifies that this wire requires an external shielding gas, typically a mixture of Argon and CO2 (e.g., 75-80% Argon / 20-25% CO2), to protect the weld pool from atmospheric contamination.
5）Performance Characteristics: It is characterized by a very stable arc, minimal spatter, excellent bead appearance, and easily removable slag, making it highly user-friendly and productive for various applications.
6）Applications: This wire is widely utilized for welding 304, 304L, 308, 308L, 321, and 347 stainless steels in industries such as chemical processing, food and beverage, power generation, and general fabrication, where high-quality, all-position welds are required.
AWS A 5.22 E308LT1-4 Stainless Steel Flux Cored Wire Welding.pdf
Standard： AWS A5.22 E308LT1-4 | Chemical Composition % | |||||||||||||
C | Mn | Si | Ni | Cr | Mo | Cu | S | P | ||||||
Grade E308LT1-4 | ≤ 0.04 | 0.5 ~ 2.5 | ≤ 1.0 | 9.9 ~ 11.0 | 18.0 ~ 21.0 | ≤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 E308LT1-4 Stainless Steel Flux Cored Welding Wire Parameters
| Diameter | Process | ||
| in | mm | ||
| 0.023 | 0.6 | GMAW，FCAW | |
| 0.03 | 0.8 | GMAW，FCAW | |
| 0.035 | 0.9 | GMAW，FCAW | |
| 0.039 | 1.0 | GMAW，FCAW | |
| 1/25.4” | |||
| 0.045 | 1.2 | GMAW，FCAW | |
| 3/64” | |||
| 1/16” | 1.6 | GMAW，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 E308LT1-4 refers to a **gas-shielded, rutile-type flux-cored welding wire** specifically engineered for **stainless steel welding**.
This classification ensures it adheres to strict American Welding Society standards, making it a reliable choice for various **fabrication projects** requiring high-quality **stainless steel welds**.
The "E" indicates an electrode.
"308L" signifies the weld metal's chemical composition, primarily for **308L stainless steel**, with "L" denoting low carbon content to enhance **corrosion resistance**.
"T1" specifies that this wire is an **all-position welding wire**, suitable for flat, horizontal, vertical-up, and overhead positions.
The "-4" indicates it requires an external **shielding gas**, typically a mixture of Argon and CO2 (e.g., Ar/20-25% CO2), for optimal performance and protection of the **weld pool**.
This welding wire is ideally suited for welding **308L stainless steel**.
It also performs exceptionally well when joining other common austenitic stainless steels such as **304, 304L, 321, and 347 stainless steel**.
Its formulation ensures excellent **intergranular corrosion resistance**, making it a prime choice for applications where material integrity in corrosive environments is critical, like in **chemical processing equipment**.
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** where multiple joint orientations are encountered.
The "-4" in its classification specifies the need for an external **shielding gas**.
The most common and recommended gas mixture is **Argon with 20-25% Carbon Dioxide (CO2)**.
This gas blend provides the necessary arc stability, weld penetration, and protection against atmospheric contamination, resulting in a clean and sound **stainless steel weld bead**.
AWS A5.22 E308LT1-4 is renowned for its **exceptional arc stability**, leading to a smooth and consistent welding process.
It produces **minimal spatter**, which reduces post-weld cleaning time, and boasts an **excellent bead appearance**.
The **slag is easily removable**, further contributing to its high productivity and aesthetic finish in **stainless steel welding applications**.
The "L" in E308LT1-4 signifies a **low carbon content** in the weld deposit.
This is vital for preventing **carbide precipitation** in the heat-affected zone (HAZ), a phenomenon that can occur during welding and lead to sensitization.
By mitigating sensitization, the weld maintains superior **intergranular corrosion resistance**, extending the service life of the **stainless steel component** in aggressive environments.
This wire is extensively used across various industries including **chemical processing**, **food and beverage production**, **power generation**, and **general heavy fabrication**.
Specific applications include welding **storage tanks, pressure vessels, piping systems, architectural stainless steel, and various structural components** where **all-position welding capabilities** and high **corrosion resistance** are critical requirements for the **stainless steel assembly**.
Compared to solid stainless steel wires (GMAW), E308LT1-4 flux-cored wire typically offers **higher deposition rates** and improved tolerance to **mill scale and surface contaminants**.
Its robust arc and slag system often provide better bead shape and appearance, especially in out-of-position welding.
While it requires shielding gas, its performance in demanding applications and its versatility in **all welding positions** make it a strong contender for efficient **stainless steel fabrication**.
For AWS A5.22 E308LT1-4 **flux-cored wire**, **DC Electrode Positive (DCEP)**, also known as **reverse polarity**, is the standard and recommended setting.
This polarity ensures deep penetration, a stable arc, and optimal bead characteristics for **gas-shielded flux-cored welding** of **stainless steel**.
The necessity for preheating largely depends on the **thickness of the stainless steel** being welded and the specific application.
For most thin to medium sections of **304L or 308L stainless steel**, preheating is often not required.
However, for thicker sections, highly restrained joints, or when welding in very cold environments, a mild preheat may be beneficial to reduce thermal stresses and ensure proper **weld integrity**.
Yes, E308LT1-4 can often be used for joining certain **dissimilar stainless steels**, particularly when one of the base materials falls within the 304L/308L family.
It's commonly used to weld 304L to 304L, or 304L to 308L.
For more complex or critical combinations of **dissimilar metals**, consulting a **welding engineer** and performing specific **welding procedure qualifications** are highly recommended to ensure long-term performance and **corrosion resistance**.
Common wire diameters for AWS A5.22 E308LT1-4 typically include **0.035 inch (0.9 mm), 0.045 inch (1.2 mm), and 1/16 inch (1.6 mm)**.
The selection 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 suited for higher productivity in **heavy fabrication**.
To preserve its optimal welding characteristics and prevent moisture absorption, **AWS A5.22 E308LT1-4 wire** should be stored in a **dry, cool environment**, ideally in its original, sealed packaging.
Exposure to high humidity can compromise the flux, potentially leading to issues like porosity or erratic arc performance during **stainless steel welding**.
Proper storage is key to ensuring consistent **weld quality**.
Yes, the carefully balanced chemical composition of the 308L weld metal, particularly its delta ferrite content, contributes to good resistance against **hot cracking** (also known as solidification cracking).
This makes it a reliable choice for welding **austenitic stainless steels**, especially in applications where joint stresses or rapid cooling rates might otherwise increase the risk of cracking in the **weld bead**.
Typical welding parameters for AWS A5.22 E308LT1-4 vary based on wire diameter, material thickness, and joint design.
However, a good starting point for voltage can range from **22-28V** and amperage from **120-250A**.
Always refer to the wire manufacturer's data sheet for precise recommendations, as optimizing these parameters is crucial for achieving the best **weld penetration, bead profile, and overall weld quality** in **stainless steel applications**.
While primarily designed for conventional constant voltage (CV) operation, some modern **pulsed MIG welding machines** can be optimized to run certain flux-cored wires effectively.
However, the primary benefit of pulse is often seen with solid wires for arc control and reduced heat input.
For E308LT1-4, conventional CV welding with the specified gas mixture remains the most common and generally recommended method for optimal **stainless steel welding performance**.
E308LT1-4, being a **rutile-type flux-cored wire**, is known for producing a very manageable and **easily removable slag**.
The slag is typically vitreous (glassy) and detaches readily, often self-peeling, which significantly reduces the need for extensive post-weld cleaning.
This ease of slag removal contributes to higher productivity and a cleaner final **weld appearance** on **stainless steel components**.
Yes, given its low carbon content, excellent mechanical properties, and ability to produce high-quality, sound welds, AWS A5.22 E308LT1-4 is indeed suitable for **critical applications** such as **pressure vessels, piping, and other structural components** in demanding industries.
Its consistent performance and **corrosion resistance** are key attributes that meet the stringent requirements for these types of **stainless steel fabrications**.
When used with the correct **shielding gas** and proper welding parameters, E308LT1-4 exhibits good resistance to porosity.
The flux system and gas shield work synergistically to protect the molten weld pool from atmospheric contaminants like nitrogen and oxygen, which are common causes of **weld porosity**.
Ensuring proper gas flow rate and clean base material are also crucial for achieving **porosity-free stainless steel welds**.
