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AWS A5.9 ER316LSi
1kg,5kg,15kg,20kg
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″
1.6mm,2.0mm,2.4mm,3.2mm,4.0mm,5.0mm
1/16 ″in;5/64″in;3/32″in;1/8″in;5/32″inch
D100,D200,D270,D300,BS300,K300
Acceptable (design the pack with your logo)
15 Days
Product Description
1）Classification: This is a specific American Welding Society (AWS) standard for a bare stainless steel filler metal, combining the benefits of low carbon and high silicon content.
2）Composition: The "ER316LSi" designation indicates a filler metal with a nominal composition of 18-20% chromium, 11-14% nickel, and 2-3% molybdenum. The "L" signifies a low carbon content (0.03% max), and the "Si" denotes a higher silicon content than standard ER316L.
3）Application: Its primary use is for welding low-carbon, molybdenum-bearing stainless steels, particularly Type 316L. It's also suitable for welding standard Type 316 and is often used for overlay welding.
4）Corrosion Resistance: The low carbon content provides superior resistance to intergranular corrosion or weld decay, while the molybdenum offers excellent resistance to pitting and crevice corrosion in chloride-rich environments.
5）Welding Processes: This wire is a versatile consumable used for both Gas Metal Arc Welding (GMAW/MIG) and Gas Tungsten Arc Welding (GTAW/TIG). However, its higher silicon content is optimized for MIG welding, improving arc stability and bead appearance.
6）Properties: The increased silicon level improves the weld puddle's fluidity and wetting action, resulting in a smoother, more aesthetically pleasing weld bead with reduced spatter. This makes it a popular choice for applications where both mechanical integrity and cosmetic appearance are important.
AWS A5.9 ER316LSi Stainless Steel Welding Wire.pdf
Standard： AWS A 5.9 YB/T5092 | Chemical Composition % | ||||||||||||
C | Mn | Si | Cr | Ni | P | S | Mo | Cu | |||||
Grade ER316LSi | ≤ 0.03 | 1.0–2.5 | 0.65 – 1.0 | 18 – 20 | 11 – 14 | ≤0.03 | ≤0.03 | 2 – 3 | ≤0.75 | ||||
Type | Spool (MIG) | Tube (TIG) | |||||||||||
Specification ( MM ) | 0.8、0.9、1.0、1.2、1.6、2.0 | 1.6、2.0、2.4、3.2、4.0、5.0 | |||||||||||
Package | S100/1kg S200/5kg S270,S300/15kg-20kg | 5kg/box 10kg/box length :1000MM | |||||||||||
Mechanical Properties | Tensile Strength Mpa | Elongation after fracture A（%） | |||||||||||
≥ 530 | ≥ 30 | ||||||||||||
Diameter（MM） | 0.8 | 1.0 | 1.2 | 1.6 | 2.0 | 2.5 | 3.2 | ||||||
Current （A） | 70 ~ 150 | 100 ~ 200 | 140 ~ 220 | 50 ~ 100 | 100 ~ 200 | 200 ~ 300 | 300 ~ 400 | ||||||
AWS A5.9 ER316LSi Stainless Steel Welding Wire Parameters
| Diameter | Process | ||
| in | mm | ||
| 0.03 | 0.8 | GMAW | |
| 0.035 | 0.9 | GMAW | |
| 0.039 | 1.0 | GMAW | |
| 1/25.4” | |||
| 0.045 | 1.2 | GMAW | |
| 3/64” | |||
| 1/16” | 1.6 | GMAW | |
| 3/32” | 2.4 | GMAW | |
| Diameter | Process | ||
| in | mm | ||
| 1/16” | 1.6 | GTAW | |
| 3/32” | 2.4 | GTAW | |
| 1/8” | 3.2 | GTAW | |
| 5/32” | 4.0 | GTAW | |
| 3/16” | 4.8 | GTAW | |
| Weight | 0.5kg | 1kg | 2kg | 5kg | 15kg | 20kg | |||||
| 1 lb | 2 lb | 4 lb | 11 lb | 33 lb | 44 lb | ||||||
AWS A5.9 ER316LSi is a bare stainless steel filler metal classified for its unique properties.
It's a high-performance wire with both **low carbon ("L")** and **high silicon ("Si")** content, specifically engineered for superior welding results.
The "L" stands for **Low Carbon**, indicating that the wire has a maximum carbon content of 0.03%.
This low level is crucial for preventing a type of corrosion called **intergranular corrosion** or weld decay.
The "Si" stands for **Silicon**, denoting a higher silicon content than standard ER316L, which dramatically improves weldability.
The increased silicon acts as a powerful deoxidizer and significantly improves the fluidity of the molten weld puddle.
This leads to a smoother, flatter weld bead, better wetting action, and reduced spatter, making it an excellent choice for a clean, cosmetic finish.
It is the perfect choice for welding low-carbon, molybdenum-bearing stainless steels, such as **Type 316L**.
It can also be used for welding standard 316 stainless steel and is suitable for overlay welding on other grades.
The **low carbon** content prevents the formation of chromium carbides, which cause weld decay.
Simultaneously, the **molybdenum** content provides exceptional resistance to **pitting and crevice corrosion**, especially in harsh environments like those containing chlorides or acids.
While it can be used for GTAW (TIG), this wire is specifically optimized for **Gas Metal Arc Welding (GMAW/MIG)**.
Its consistent wire feed and superior arc stability make it ideal for high-speed, automated, and semi-automatic welding applications.
This filler metal is a staple in the **food and beverage industry** for sanitary equipment and the **chemical processing industry** for tanks and piping.
It's also heavily used in the **marine industry** due to its resistance to saltwater corrosion.
The weld deposit from ER316LSi provides a robust joint with a typical tensile strength of around **80,000 psi (550 MPa)**.
This ensures a strong and durable weld that can withstand significant structural and thermal stresses.
Preheating is generally not necessary when welding with ER316LSi.
However, it's always best to follow a controlled welding procedure for extremely thick sections or complex joint designs.
The primary difference is the higher silicon content.
This extra silicon in ER316LSi improves weldability, arc stability, and bead shape, making it the preferred choice for MIG welding where a smooth, clean finish is required.
For optimal results, a shielding gas mixture of **98% argon and 2% carbon dioxide** is highly recommended.
This blend provides excellent arc stability, minimizes spatter, and helps achieve a high-quality weld.
While its primary use is for welding 316-type stainless steels, it can be used for some dissimilar applications, but it's generally not the go-to choice.
For joining stainless steel to carbon steel, a filler metal like ER309L is often more suitable.
The wire must be stored in a **clean, dry, and moisture-free environment**.
It's crucial to keep spools in their original sealed packaging until use to protect them from contaminants and moisture, which can cause weld defects.
Its combination of low carbon and molybdenum makes it ideal for sanitary applications.
It produces a smooth, clean weld that resists corrosion from cleaning agents and process fluids, ensuring a hygienic and long-lasting system.
Yes, its consistent chemical composition and excellent wire-feeding characteristics make it an ideal filler metal for automated and **orbital welding systems**.
It ensures repeatable, high-quality welds for critical joints.
The weld metal is engineered to contain a small, controlled amount of **delta ferrite** within the austenitic matrix.
This ferrite helps to prevent solidification cracking, which can be an issue in fully austenitic welds.
The key distinction is weldability.
ER316LSi provides superior arc stability and a more fluid puddle, which is a major advantage for fabricators who prioritize a high-quality, cosmetic finish, especially with MIG welding.
While an excellent all-around wire, the higher silicon content can sometimes make the weld slightly more susceptible to hot cracking if welding parameters are not optimized.
However, this is not a concern for most standard applications with proper technique.
Amperage settings will vary depending on the wire diameter, welding process, and base metal thickness.
It is always best practice to consult the manufacturer's data sheet for specific recommendations to ensure optimal performance.
Choose **ER316LSi** for MIG welding applications where a smooth weld bead appearance and excellent arc stability are critical.
Opt for ER316L when you are primarily TIG welding or when the improved weldability from higher silicon isn't a priority for your application.
