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The Harris ER309L is a premium quality solid TIG welding rod classified under AWS A5.9. It is engineered for Gas Tungsten Arc Welding (GTAW) of heat-resistant base metals of similar compositions, as well as for joining stainless steels to carbon or low-alloy steels. The nominal composition of 24% chromium and 13% nickel provides superior oxidation resistance and high-temperature strength, making it suitable for service temperatures up to 300-350°C in dissimilar applications.
One of the primary technical benefits of the ER309L alloy is its resistance to hot cracking, a common issue when welding austenitic stainless steels to ferritic steels. The chemistry is balanced to provide a ferrite number (FN) that ensures a crack-resistant microstructure upon cooling. Furthermore, the extra-low carbon content (0.03% max) significantly reduces the susceptibility to intergranular corrosion (IGC) in the heat-affected zone, eliminating the need for post-weld annealing in many applications.
This 1.6mm diameter rod offers excellent puddle control for precision root passes and out-of-position welding. It produces a smooth stable arc with 100% Argon shielding gas (DCEN polarity). The rod surface is cleaned to ensure smooth feeding and to prevent contamination of the weld pool. It is widely used in the petrochemical, power generation, and food processing industries for barrier layers and cladding operations. The 10lb packaging ensures ample supply for production runs while protecting the filler metal from atmospheric contaminants.
| Additional Information |
|---|
| Brand:Harris |
| AWS Spec:ER309L |
| Diameter:1.6mm (1/16") |
| Grade:309 |
| Packaging:10 lb Tube |
| Weld Process:TIG (GTAW) |
| Material Composition:Stainless Steel 309L |
| Rod Length:36 inches |
| Shielding Gas:100% Argon |
| Polarity:DCEN |
| Carbon Content:0.03% Max |
| Item:Welding Rod |
| Packaging Description:10lb tube |
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