Sandvik 19.12.3.Nb (Welding wire)
Datasheet updated 2012-08-02 19:33:32 (supersedes all previous editions)
Sandvik 19.12.3.Nb is a niobium stabilised filler metal suitable for joining stainless steels of the 18Cr/8Ni/Mo, 18Cr/8Ni/Mo/Ti and 18Cr/8Ni/Mo/Nb types. Due to the strengthening effect of niobium, this grade is recommended if the weld metal will be exposed to temperatures above 400°C (750oF).
Standards
- AWS ER318
- EN number 19 12 3 Nb
Standards
Approvals
Sandvik 19.12.3.Nb is, depending on welding process, approved by TÜV and UDT. Please contact your nearest sales office for full details.
Chemical composition (all-weld metal)
The following data are typical for non heat treated weld metal made by MIG welding with a shielding gas of Ar + 2%O2 and TIG or plasma arc welding with Argon as shielding gas.
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb | N |
|---|---|---|---|---|---|---|---|---|---|
| 0.03 | 0.4 | 1.3 | 0.012 | 0.011 | 18 | 11 | 2.6 | 0.55 | 0.05 |
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb | Co | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.04 | 0.4 | 1.5 | <0.025 | <0.015 | 18.5 | 11.5 | 2.6 | >12xC <0.60 |
<0.20 | <0.2 | <0.060 |
Ferrite content
The ferrite number according to DeLong diagram based on aim composition = 10FN.
Corrosion properties (all-weld metal)
saknas
Filler metal
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb | Co | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.04 | 0.4 | 1.5 | <0.025 | <0.015 | 18.5 | 11.5 | 2.6 | >12xC <0.60 |
<0.20 | <0.2 | <0.060 |
Ferrite content
The ferrite number according to DeLong diagram based on aim composition = 10FN.
Mechanical properties (all-weld metal)
|
Temperature
|
°C
|
20
|
400
|
-196
|
|---|---|---|---|---|
|
Yield strength, RP0.2
|
MPa
|
400
|
390
|
-
|
|
Tensile strength, Rm
|
MPa
|
610
|
540
|
-
|
|
Elongation, A5
|
%
|
36
|
30
|
-
|
|
Reduction in area, Z
|
%
|
59
|
-
|
-
|
|
Impact strength, Charpy V
|
J
|
135
|
-
|
60
|
|
Hardness, Vickers
|
HV
|
220
|
-
|
-
|
|
Temperature
|
°C
|
600
|
700
|
|
|
Creep strength
5 x 104 h |
MPa
|
155
|
45
|
|
Microstructure (all-weld metal)
Austenitic matrix with a ferrite content of about 10FN according to DeLong.
Physical properties (all-weld metal)
|
Temperature °C
|
20 | 100 | 300 | 500 |
|---|---|---|---|---|
|
Thermal conductivity, W/m
|
15 | 15 | 21 | 23 |
Thermal expansion per °C, from 20°C to 400°C 18 x 10-6
Density, g/cm3 8,0
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.
Article functions
Related information
Print this datasheet
Export to PDF
Download this datasheet as PDF or send by email.
Download as PDF
Send PDF via email