KF-300S/KW-309MoL

Basicity: 2.5
The weld metal has a low-carbon austenitic structure containing 23.5% Cr, 13% Ni, and 2.5% Mo.

▎Classification

AWS A5.9/A5.9MER309LMo
JIS Z3323YS309LMo
EN ISO 14343-AS 23 12 2 L
YB T5092H022Cr24Ni13Mo2

▎Applications and Features

  • The weld metal has a low-carbon austenitic structure containing 23.5% Cr, 13% Ni, and 2.5% Mo.
  • KF-300S provides good operability and slag detachability, producing welds with an excellent bead appearance. It also delivers superior mechanical properties and corrosion resistance.
  • It is suitable for dissimilar welding of carbon steel to AISI 316L stainless steel, or for stainless steel surfacing on dissimilar steels.

▎Welding Instruction

Please refer to the precautions for submerged arc welding (SAW).

▎Applications

It is suitable for dissimilar welding of carbon steel to AISI 316L stainless steel, or for stainless steel surfacing on dissimilar steels.

▎Typical Chemical Composition of Weld Metal (wt%)

CSi
Mn
PSCrNiMo
0.030.401.800.0170.00923.7212.872.52

▎Typical Mechanical Properties of Weld Metal

Tensile Strength
N/mm²
Yield Strength
N/mm²
Elongation
%
61843239

▎Size and Polarity (DC+)

Diameter(mm)
2.02.43.2
Current(A)190~300275~350350~450

▎Certification