ER309L – WIRE – MIG (GMAW) – STAINLESS STEEL AWS A5.9 Welding Positions: All INTRODUCTION: High-alloy solid wire electrode, annealed and layer wound, excellent welding characteristics thanks to high Si content, suitable for dissimilar joints and buffer layers, maximum operating temperature 300 °C USES: Austenite-ferrite joints (dissimilar), cladding, corrosion-resistant layers on non-alloyed construction steels, buffer layers. CHEMICAL COMPOSITION (%): Chemical Composition C Mn Si Cr Ni Requirement ?0.030 1.00~2.50 0.30~0.65 18..00~20.00 11.00~14.00 Typical test result 0.023 1.90 0.42 19.12 12.59 Chemical Composition Mo P S Cu Requirement 2.00~3.00 ?0.030 ?0.030 ?0.75 Typical test result 2.59 0.009 0.008 0.28 WELDING PARAMETERS (DC+): Diameter (mm) ?0.8 ?1.0 ?1.2 Welding Current (Amps) 70~150 100~200 140~220 NOTES: 1. Shield gas: Must ensure not to operate with impurity shield Gas, Recommended Rate of mixed gas: Ar + 1-3% O2. 2. Operation flow rate of shield gas: 20-25L/min. 3. Electrode extension: 15-25mm 4. The welding should be operated in clean surface without rust, moist, oil contamination and dust. 5. To avoid bubbles protect from wind its speed reach 1.5 m/s. The above parameters are for reference purpose and depend on diverse factors. Run tests, evaluate and set your welding parameters before starting the welding job.