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Stainless Steel MIG Wire

BLUME® ER309LMo

BLUME® ER309LMo

Specification: ASME SFA/AWS A5.9 ER309LMo

The Ultimate Solution for Superior Corrosion Resistance and Dissimilar Metal Welding

When welding demands exceptional corrosion protection, smooth arc performance, and precision weld aesthetics, choose BLUME® ER309LMo MIG Wire. Engineered with low carbon and molybdenum alloying, it delivers excellent resistance to pitting, crevice, and intergranular corrosion—even in harsh chloride or acidic environments.

Perfect for joining dissimilar metals or overlaying stainless surfaces, BLUME® ER309LMo ensures consistent weld quality, clean bead appearance, and long-term durability, making it the professional’s choice across critical industries.

BLUME® ER309LMo vs Standard ER309LMo

Key Features

✅ Low carbon content (L-grade) – Prevents carbide precipitation and intergranular corrosion
✅ Molybdenum alloy addition – Enhances resistance to pitting and crevice corrosion
✅ Superior for dissimilar metal joints – Ideal for stainless-to-carbon or stainless-to-low alloy steel
✅ Excellent weld pool control – Ensures smooth, stable arc and minimal spatter
✅ Enhanced mechanical properties – High strength and ductility even under stress
✅ Clean and bright finish – Excellent bead appearance for critical stainless applications
✅ Consistent performance – Manufactured under BLUME®’s stringent quality standards

Recommended Application

✔ Dissimilar metal welding – Stainless steel to carbon or low-alloy steel
✔ Cladding and overlay – For corrosion-resistant surfaces in process equipment
✔ Chemical and petrochemical equipment – Reactors, tanks, and heat exchangers
✔ Marine and offshore fabrication – Components exposed to seawater
✔ Food and beverage industry – Equipment requiring high cleanliness and corrosion resistance
✔ Pulp and paper mills, refineries, and desalination plants

Product Data Sheet

FAQ

Q: What makes BLUME® ER309LMo different from standard ER309L or ER309Mo wires?
A: BLUME® ER309LMo combines low carbon for intergranular corrosion resistance with molybdenum for enhanced pitting resistance—offering the best of both worlds for demanding applications.

Q: Can BLUME® ER309LMo be used for joining stainless to carbon steel?
A: Yes. It’s ideal for dissimilar metal welding, especially when corrosion protection and structural integrity are crucial.

Q: What shielding gas should be used with BLUME® ER309LMo MIG Wire?
A: Recommended gases are 98% Argon + 2% Oxygen or 95–98% Argon + 2–5% CO₂ for optimal arc performance and bead wetting.

Q: Is BLUME® ER309LMo suitable for marine environments?
A: Absolutely. Its molybdenum-enhanced formulation provides excellent resistance to seawater and chloride attack.

Q: Why choose BLUME® ER309LMo over standard options?
A: With premium alloy balance, tighter manufacturing tolerances, and cleaner arc performance, BLUME® ensures better weld reliability, longevity, and finish—saving rework time and costs.

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