Welding Wire
ER308LSi Stainless Steel Welding Wire
ER308LSi is a low-carbon austenitic stainless steel filler metal with higher silicon content than ER308L. It offers improved weld-pool wetting and bead formation for suitable stainless steel welding applications. GD WELD supplies ER308LSi as MIG solid wire and TIG filler rods, subject to availability and technical specifications.
Key Features
- Higher silicon content than ER308L to improve weld-pool wetting and bead profile.
- Low carbon content for suitable applications requiring low-carbon stainless steel filler metal.
- Commonly selected for compatible 304 and 304L stainless steel welding.
- Available in MIG/GMAW wire and TIG/GTAW filler rod forms.
ER308LSi vs. ER308L: Which Should You Choose?
Comparison | ER308LSi | ER308L |
|---|---|---|
Carbon content | Low carbon | Low carbon |
Silicon content | Higher | Generally lower |
Weld-pool wetting | Generally improved | Depends on product formulation |
Bead formation | Often preferred for smoother wetting and bead profile | Suitable when specified by the WPS |
Selection priority | When improved wetting and bead appearance are desired | When ER308L or a lower-silicon filler is specified |
Actual performance depends on the product formulation, welding process, shielding gas, and welding parameters. Follow the qualified welding procedure (WPS) and manufacturer's technical data.
Base Materials and Applications
ER308LSi is commonly considered for compatible austenitic stainless steel grades, including:
- AISI 304 and 304L stainless steel
- Selected 18Cr-8Ni stainless steel components
- Tanks, piping, sheet metal, and general stainless steel fabrication
- Food-processing and chemical-processing equipment where the filler metal meets service requirements
Confirm base-metal compatibility, corrosion requirements, and operating conditions before selecting the filler metal.
MIG Wire and TIG Filler Rod Supply
MIG/GMAW solid wire: Common diameters may include 0.8, 0.9, 1.0, and 1.2 mm.
TIG/GTAW filler rods: Common diameters may include 1.6, 2.0, 2.4, and 3.2 mm.
Sizes and packaging are subject to availability. Shielding gas, polarity, and welding parameters should follow the supplied product's technical data sheet and applicable welding procedure.
AWS Classification and Chemical Composition
ER308LSi is classified under AWS A5.9. The following are commonly referenced classification limits in weight percent; verify them against the applicable standard edition and the supplied product's technical data sheet before publication or use.
Element | Classification Limit (wt.%) |
|---|---|
C | ≤ 0.030 |
Mn | 1.00–2.50 |
Si | 0.65–1.00 |
P | ≤ 0.030 |
S | ≤ 0.030 |
Cr | 19.50–22.00 |
Ni | 9.00–11.00 |
Mo | ≤ 0.75 |
Cu | ≤ 0.75 |
These values are classification limits, not a guarantee of the actual chemical analysis of every production batch. Request the current TDS and inspection certificate when required.
Request a Quote for ER308LSi
To help us confirm a suitable supply option, please specify:
- Product form: MIG wire or TIG filler rod
- Diameter and required quantity
- Packaging requirements
- Base material and application
- Applicable standards or certification requirements
Contact GD WELD for product specifications, availability, and quotation.
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