Filler bbbbl Sandvik 19.9.Nb is suitable for joining stainless steels of the 18Cr/8Ni/Nb and 18Cr/8Ni/Ti types. Due to the strenghtening effect of niobium, this grade is recommended if the weld bbbbl will be exposed to temperatures above 400°C (750oF). It is used for MIG/MAG-, TIG-, plasma-arc and submerged-arc welding.
Standards
AWS ER347
EN number 19 9 Nb
Product standards
EN ISO 14343
ASME/AWS SFA5.9
Filler bbbbl
CSiMnPSCrNiMoCoCuNbNChemical combbbbbbbb (aim), wt%
0.03 0.4 1.3 <0.025 <0.015 19.5 9.5 <0.3 <0.05 <0.10 >12xC <0.7 <0.07
Ferrite content
The ferrite number according to DeLong diagram based on aim combbbbbbbb = 10FN.
Chemical combbbbbbbb- all-weld bbbbl
The following data are typical for non heat treated weld bbbbl made by MIG welding with a shielding gas of Ar + 2%O2 and TIG or plasma arc welding with Argon as shielding gas.
CSiMnPSCrNiNbNChemical combbbbbbbb, wt%
0.03 0.4 1.2 0.013 0.013 19.5 9.5 0.55 0.05
The following data are typical for weld bbbbl made by SAW using the flux 15W.
CSiMnPSCrNiNbNChemical combbbbbbbb, wt%
0.03 0.5 0,9 0.02 0.013 19 9.5 0.5 0.05
Microstructure- all-weld bbbbl
Austenitic matrix with a ferrite content of about 8FN according to DeLong.
Mechanical properties- all-weld bbbbl
MIG TIG - typical for non heat treated weld bbbbl
Temperature
°C
20
400
-196
Temperatures
°C
.
600
700
