Classification:
AWS A5.22
E309LCbT1-1/4
Description:
Cromacore DW 309LNb is a rutile flux cored wire which deposits a low carbon, Nb-stabilised 24% Cr /
13% Ni stainless steel weld metal with a ferrite level of FN ~18. The wire operates with a very stable,
spatter free arc producing a bright, smooth weld bead surface and self-releasing slag. Cromacore DW
309LNb is used mainly for overlay welding of 2.25Cr-1Mo steels
Applications:
Overlay welding of low alloy steels.
Buffer layer on clad steel joints.
Welding positions:
Recommended parameter range:
Welding current:
DC+
Deposition efficiency:
87%
Shielding gas:
M21, 80% Ar + 20% CO2, 22-25 l/min.
C1, 100% CO2, 22-25 l/min.
Stick-out:
15-25 mm
Chemical composition, wt.%
Deposition rate per hour:
Mechanical properties
Typical
Yield strength, Rp0.2%:
Tensile Strength, Rm:
Elongation, A5
Impact energy, CV:
Ferrite content:
FN ~18
Approvals:
427 MPa
579 MPa
36%
0°C•50 J
Product data:
1,2
127
95951012
15 kg BS300