BLUME® ER309

✅ Superior crack resistance – Ideal for welding dissimilar metals and high-stress joints
✅ High alloy content (Cr/Ni) – Enhances corrosion and oxidation resistance
✅ Excellent weld metal strength – Delivers reliable, durable welds under mechanical stress
✅ Smooth, stable arc – Consistent bead shape and minimal spatter
✅ Versatile performance – Works well with both Ar+CO₂ and Ar+O₂ shielding gases
✅ BLUME® precision manufacturing – Ensures exceptional feedability and arc consistency

✔ Welding stainless to carbon steel
✔ Buffer layers prior to hardfacing or surfacing
✔ Cladding and overlays for corrosion-resistant surfaces
✔ Repair welding of dissimilar components
✔ Chemical processing and petrochemical equipment
✔ Industrial maintenance and fabrication

BLUME® ER309 Datasheet

Q: What is BLUME® ER309 used for?
A: It’s ideal for joining stainless steel to carbon or low-alloy steel, and for cladding, overlays, or buffer layers where high corrosion resistance is needed.

Q: Can it be used for stainless-to-stainless welding?
A: Yes – especially when welding 309 or 304 stainless steels, but it’s most effective for dissimilar metal joints.

Q: What shielding gas should I use?
A: Use 98% Argon + 2% Oxygen for optimal arc stability or 95–98% Argon + 2–5% CO₂ for slightly deeper penetration.

Q: How does BLUME® ER309 differ from ER308?
A: ER309 has higher alloy content, providing better crack resistance and corrosion protection, especially for stainless-to-carbon steel welding.