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AWS A5.9 ER308LSi
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 an American Welding Society (AWS) standard for bare stainless steel filler metal, with a designation that includes both low carbon and high silicon content.
2）Composition: The "ER308LSi" designation signifies a filler metal with a low carbon content (0.03% max) to prevent intergranular corrosion, and a higher silicon content (typically 0.65-1.0%) compared to standard ER308L.
3）Welding Processes: It is primarily optimized for Gas Metal Arc Welding (GMAW/MIG), but can also be used for Gas Tungsten Arc Welding (GTAW/TIG).
4）Application: This wire is used for welding unstabilized austenitic stainless steels, such as Types 304L, 321, and 347, as well as for welding Type 304.
5）Properties: The increased silicon level improves the fluidity and wetting action of the weld puddle, leading to better arc stability, reduced spatter, and a smoother, more cosmetically appealing weld bead profile.
6）Industries: It is commonly found in industries like food and beverage, chemical processing, and general fabrication, where both weld quality and appearance are important.
AWS A5.9 ER308LSi Stainless Steel Welding Wire.pdf
Standard：AWS A 5.9 YB/T5092 | Chemical Composition % | |||||||||||||
C | Mn | Si | Cr | Ni | P | S | Mo | Cu | ||||||
Grade ER308LSi | ≤0.03 | 1.0 – 2.5 | 0.65 – 1.00 | 19.5 – 22 | 9 – 11 | ≤0.03 | ≤0.03 | ≤0.75 | ≤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（%） | ||||||||||||
≥ 580 | ≥ 35 | |||||||||||||
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 ER308LSi 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 ER308LSi is a high-silicon, low-carbon stainless steel welding wire.
It is specifically designed for Gas Metal Arc Welding (GMAW), or MIG welding, to provide excellent weldability and corrosion resistance.
The "L" signifies "Low Carbon," meaning the carbon content is kept at a maximum of 0.03% to prevent intergranular corrosion.
The "Si" stands for "Silicon," indicating a higher silicon content than standard ER308L, which enhances weld puddle fluidity.
The increased silicon acts as a deoxidizer and significantly improves the fluidity of the molten weld puddle.
This results in a smoother bead profile, better wetting action, and reduced spatter, which is ideal for a clean weld appearance.
This wire is primarily used for welding unstabilized austenitic stainless steels, such as Types 304L, 321, and 347.
Its superior performance makes it a top choice for industries where both weld quality and aesthetics are crucial.
The main difference is the silicon content.
While both are low-carbon for excellent corrosion resistance, the ER308LSi has a higher silicon level, providing better arc stability and a more fluid weld puddle, which improves overall weldability, especially for MIG welding.
It is perfectly suited for joining low-carbon stainless steel grades like 304L.
It can also be used for welding regular 304 stainless steel and even certain stabilized grades like 321 and 347 without compromising their properties.
This filler metal is a staple in the food and beverage industry for sanitary piping and equipment.
It's also widely used in chemical processing, pharmaceutical manufacturing, and general fabrication where a smooth, clean weld is required.
For Gas Metal Arc Welding (MIG), a shielding gas mixture of 98% argon and 2% carbon dioxide is a popular choice.
This combination provides excellent arc stability and helps achieve the desired cosmetic finish.
While it can be used for Gas Tungsten Arc Welding (TIG), its properties, particularly the higher silicon content, are optimized for the continuous wire feed of MIG welding.
For TIG, a standard ER308L is often preferred, but ER308LSi still performs well.
Yes, the low carbon content ensures it has excellent resistance to intergranular corrosion, or weld decay, particularly in the heat-affected zone.
This makes it a reliable choice for applications exposed to corrosive environments.
To prevent contamination and moisture pick-up, it is critical to store the wire in a clean, dry, and cool environment.
Always keep spools in their original, sealed packaging until they are ready to be used.
The weld deposit provides a robust mechanical joint with a typical tensile strength of around 80,000 psi (550 MPa).
This ensures the weld is strong enough for most structural and pressure-bearing applications.
Preheating is generally not required for welding austenitic stainless steels with ER308LSi.
However, for very thick sections, a mild preheat may be beneficial to manage heat input and reduce the risk of cracking.
Yes, it can be used for joining stainless steel to carbon steel, but careful consideration of the application is necessary.
For high-stress or critical dissimilar welds, other filler metals might be a more appropriate choice.
The higher silicon content creates a more fluid puddle that flows smoothly, resulting in a flatter and cleaner-looking weld bead.
This reduces the need for post-weld grinding and finishing, saving time and money.
High-quality wire with consistent diameter and proper surface finish ensures smooth feeding and a stable arc.
This directly contributes to higher weld quality, fewer defects, and a more efficient welding process.
While excellent for many applications, its high silicon content can sometimes make the weld slightly more susceptible to hot cracking if proper welding procedures are not followed.
However, this is generally not an issue for most standard applications.
Yes, it meets or exceeds the requirements of AWS A5.9, which is a globally recognized standard for stainless steel filler metals.
This ensures its chemical composition and mechanical properties are consistent and reliable.
As with all welding, it's crucial to use proper personal protective equipment (PPE), including a welding helmet, gloves, and protective clothing.
Ensure you have adequate ventilation to avoid inhaling welding fumes, which can be hazardous.
Choose ER308LSi when you prioritize excellent weldability and a smooth, clean bead profile, especially for MIG welding.
Opt for ER308L when the specific application requires a filler metal with slightly less silicon, and weld appearance is less of a concern.
