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Stainless Steel MIG Wire

BLUME® ER309LSi

BLUME® ER309LSi

Specification: ASME SFA/AWS A5.9 ER309LSi

The Strongest Bond for Dissimilar Metal Welding

When welding dissimilar metals, high-temperature alloys, or cladding applications, trust BLUME® ER309LSi MIG Wire for exceptional strength, superior corrosion resistance, and smooth, clean welds. With higher silicon content, this wire provides improved weld fluidity, better wetting action, and minimal spatter, ensuring flawless results with reduced cleanup.

Designed for joining stainless steel to carbon steel and overlay welding, BLUME® ER309LSi is the go-to solution for industries that demand high-strength, corrosion-resistant welds, such as petrochemical, power generation, and marine fabrication. Whether you're working with manual, automated, or robotic welding, this wire delivers unmatched performance every time.


Why Choose BLUME® ER309LSi?

Key Features

✔ High silicon content – Improves fluidity and weld bead appearance
✔ Excellent corrosion & oxidation resistance – Ideal for high-temperature environments
✔ Low spatter & easy slag removal – Reduces post-weld cleanup
✔ Superior strength for dissimilar metals – Perfect for joining stainless steel to carbon steel
✔ Consistent feedability – Works flawlessly in manual, automated, and robotic welding

Recommended Application

✔ Welding stainless steel to carbon steel – Strong, crack-resistant welds
✔ Cladding & overlay welding – Protective layers against corrosion & wear
✔ Petrochemical & power plants – High-heat and corrosive environments
✔ Marine & offshore fabrication – Resistant to saltwater and extreme conditions
✔ Heat exchangers & boilers – High-strength welds for pressure resistance

Product Data Sheet

BLUME® ER309LSi Datasheet

FAQ

Q: What shielding gas should I use with BLUME® ER309LSi?
A: A 98% Argon / 2% CO₂ mix provides the best arc stability and weld quality. 100% CO₂ can be used but may produce more spatter.

Q: Can this wire be used for welding stainless to mild steel?
A: Yes! BLUME® ER309LSi is specifically designed for joining stainless steel to carbon or mild steel with strong, crack-resistant welds.

Q: Why is the higher silicon content important?
A: Increased silicon improves weld fluidity, resulting in smoother, cleaner welds with better wetting action and less spatter.

Q: Is BLUME® ER309LSi suitable for robotic welding?
A: Absolutely! Its consistent feedability and smooth arc characteristics make it ideal for automated and robotic welding applications.

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0.030" (0.80mm) / 28 lbs (12.5 Kgs) Spool
0.030" (0.80mm) / 28 lbs (12.5 Kgs) Spool
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