Domestic Market
Superon 309LMo is a stainless steel welding consumable designed for welding molybdenum-containing alloy steels and for joining dissimilar metals. This product is suitable for both MIG and TIG welding applications where improved corrosion resistance and tensile strength are required. The addition of molybdenum helps improve weld metal performance in demanding environments. 309LMo is commonly used for welding stainless steels from the AISI 309 series, 316 type clad steels, and combinations of stainless steel with carbon steel. The 309LMO welding rod is widely used in fabrication work that requires strong buffer layers and reliable metallurgical bonding.
Key Features and Benefits
309LMo offers stable welding performance and strong mechanical properties across a wide range of applications.
- Molybdenum alloyed weld metal: Improves tensile strength and corrosion resistance of the weld.
- Suitable for dissimilar metal welding: Allows joining of stainless steel to carbon and medium tensile steels.
- Reliable buffer layer performance: Ideal for intermediate layers before surfacing with 316L stainless steel.
- Good corrosion resistance: Performs well in environments where molybdenum alloying is required.
- Stable arc characteristics: Supports smooth welding in both MIG and TIG processes.
- Wide industrial usability: Suitable for fabrication, cladding, and structural welding applications.
These properties make the 309LMO welding rod suitable for critical fabrication and repair work.
Specifications
The table below outlines the mechanical properties and welding conditions for 309LMo.
|
Product Name |
AWS SFA Classification |
Yield Strength N mm² |
Tensile Strength N mm² |
Elongation A5 |
Impact Energy ISO V at 20 C |
Welding Conditions |
|---|---|---|---|---|---|---|
|
SUPERMIG 309LMo |
ER 309 LMo |
≥ 350 |
≥ 550 |
≥ 30 |
≥ 55 |
DC Positive |
|
SUPERTIG 309LMo |
ER 309 LMo |
≥ 350 |
≥ 550 |
≥ 30 |
≥ 45 |
DC Negative |
Properties
309LMo welding consumables are austenitic stainless steel fillers designed for high corrosion resistance, strength, and reliability, especially in demanding industrial and chemical environments.
- Austenitic Stainless Steel Weld Metal: Provides a stable and crack-resistant weld structure, suitable for both similar and dissimilar metal welding.
- Enhanced Corrosion Resistance: The addition of molybdenum improves resistance to pitting and crevice corrosion, especially in chloride-rich and chemical environments.
- Good High-Temperature Performance: Maintains strength and oxidation resistance at elevated temperatures, making it suitable for heat-exposed components.
- High Crack Resistance: The controlled ferrite content in the weld metal helps reduce hot cracking during welding and cooling.
- Good Mechanical Strength: Offers reliable tensile strength and ductility, ensuring welds can handle stress and thermal expansion.
- Excellent Weldability: Produces a stable arc with smooth metal transfer, resulting in clean weld beads and minimal spatter.
- Suitable for Dissimilar Metal Welding: Commonly used for joining stainless steel to carbon or low-alloy steels.
These properties make the 309LMo welding rod a dependable choice for fabrication, repair, and maintenance welding in chemical, petrochemical, and industrial applications.
Related Products
We offer a range of complementary welding consumables to meet diverse stainless steel and special welding requirements across industries.
- 309 and 309LSi Stainless Steel Welding Wires: Ideal for dissimilar metal welding and buffer layer applications, providing strong and crack-resistant welds.
- 316 and 316L Stainless Steel Consumables: Designed for applications needing higher corrosion resistance, especially in chemical, marine, and industrial environments.
- 347 Series Stainless Steel Wires: for high-temperature service where resistance to intergranular corrosion is important.
- Dissimilar Metal Welding Consumables: Engineered to join different types of metals reliably, ensuring durable and stable welds in complex fabrication work.
