AVESTA FCW 309L-PW STAINLESS WIRE (FOXcore 309L-T1)
Gas-Shielded Wires, Stainless Steel, All Position
AWS A5.22, E309LT1-1/4
Characteristics and typical fields of applicationAustenitic stainless steel flux-cored wire of T 23 12 L P / E309LT1 type, primarily intended for surfacing lowalloyed steels and for dissimilar welds between mild steel and stainless steels. Ferrite measured with FeritScope FMP30 14 – 22 FN. Corrosion resistance superior to T 19 9 L / E308L fillers. When used for overlay welding on mild steel a corrosion resistance equivalent to that of 1.4301 / 304 is obtained already in the first layer. Avesta FCW 309L-PW (FOXcore 309L-T1) has a stronger arc and a faster freezing slag compared Avesta FCW-2D 309L (FOXcore 309L-T0 DG). It is designed for all-round welding and can be used in all positions without changing the parameter settings. Very good slag detachability and almost no spatter formation. Due to the fast freezing rutile slag, the weldability is excellent also in the vertical-up and overhead positions. Maximum application temperature 300°C. The scaling temperature is approximately 1000°C in air.
Primarily used for surfacing (buffer layer) unalloyed or low-alloyed steels and when joining non-molybdenumalloyed stainless steels to carbon steels. Joints and mixed joints between austenitic steels, austenitic and ferritic heat resistant steels with ferritic steels, pressure boiler steels, fine grained structural steels and ship building steels, etc.
Welding with standard GMAW power source with DC+ polarity. No pulsing needed. Backhand (drag) technique preferred with a work angle of approximately 80°. Ar + 15 – 25% CO2 offers the best weldability. 100% CO2 can be also used, but the voltage should be increased by 2 V. Suitable gas flow rate for welding outdoors is 18 – 25 l/min. Suggested heat input is max. 2.0 kJ/mm and wire stick-out 15 – 20 mm. For dissimilar welding, slight weaving is recommended for all welding positions. Post-weld heat treatment generally not needed. For constructions that include dissimilar welding of low-alloyed steels, a stressrelieving annealing stage may be advisable. Always consult the supplier of the parent material or seek other expert advice to ensure that the correct heat treatment process is carried out. Preheat and interpass temperatures as required by the base metal.
The wire is recommended for single and multi-pass welding in all positions
CONFORMANCES AND APPROVALS:
• AWS A5.22 / SFA-5.22 E309LT1-4(1)