Bohler Welding – AVESTA 309L Tig
TIG rods, high-alloyed, stainless
Classification: AWS 5.9 ER309L
Characteristics and typical fields of application
Is a high-alloy 23 Cr 13 Ni wire primarily intended for surfacing low-alloy steels and for dissimilar welding between mild steels and stainless steels, offering a ductile and crack resistant weldment. The chemical composition when surfacing is equivalent to that of ASTM 304 from the first run. One or two layers of 309L are usually combined with final layer of 308L, 316L or 347.
Ferrite Number ≈ 10 – 14 FN WRC 92
Scaling temperature: Approx. 1000 °C (air).
Interpass temperature: 150°C
Scaling Temperature: 1000°C
Shielding Gas: Ar (99.95%) or Ar with an addition of 20-30% Helium (He) or 1 – 5% hydrogen (H2).
Gas Flow: rate 4 – 8 l/min
