



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