Sandvik 19.12.3.LSi (Welding wire)
Datasheet updated 2012-08-02 19:34:51 (supersedes all previous editions)
Sandvik 19.12.3.LSi is suitable for joining stainless Cr-Ni-Mo and Cr-Ni steels, stabilized or non-stabilized, e.g. ASTM 316, 316L and 316Ti as well as 304, 304L, 321 and 347, for service temperatures up to 400oC (750oF), stainless Cr-steels with max 19% Cr. It is used for MIG/MAG-, TIG- and plasma-arc welding.
Standards
- AWS ER316LSi
- EN number 19 12 3 L Si
Product standards
- EN ISO 14343
- ASME/AWS SFA5.9
Filler metal
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| <0.025 | 0.9 | 1.8 | <0.025 | <0.015 | 18.5 | 12 | 2.6 | <0.060 |
Ferrite content
The ferrite number according to DeLong diagram based on aim analysis = 10FN.
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| max | max | max | ||||||
| 0.025 | 0.9 | 1.8 | 0.025 | 0.015 | 18.3 | 12.3 | 2.6 | 0.05 |
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.
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Mo
|
N
|
|---|---|---|---|---|---|---|---|---|
|
0.02
|
0.9
|
1.7
|
0.010
|
0.013
|
18.5
|
11.5
|
2.6
|
0.06
|
Microstructure - all-weld metal
Austenitic matrix with a ferrite content of about 9FN according to DeLong.
Mechanical properties - all-weld metal
|
Temperature
|
°C
|
20
|
400
|
-196
|
|---|---|---|---|---|
|
Yield strength, RP0.2
|
MPa
|
400
|
290
|
-
|
|
Tensile strength, RM
|
MPa
|
610
|
440
|
-
|
|
Elongation, A5
|
%
|
37
|
29
|
-
|
|
Reduction in area, Z
|
%
|
68
|
-
|
-
|
|
Impact strength, Charpy V
|
J
|
130
|
-
|
50
|
|
Hardness, Vickers
|
HV
|
160
|
-
|
-
|
Physical properties - all-weld metal
|
Temperature °C
|
20
|
100
|
300
|
500
|
|---|---|---|---|---|
|
Thermal conductivity, W/m
|
15
|
16
|
19
|
21
|
Corrosion properties - all-weld metal
Sandvik 19.12.3LSi has good resistance to general corrosion and due to its low carbon content, good resistance to intercrystalline corrosion. It also has good resistance to pitting corrosion due to the balanced molybdenum content. Example: Pitting corrosion test. Three days in 1% FeCl3 at 20 oC (68 oF), no corrosion observed.
Recommended welding data
MIG welding
Electrode positive is used to give good penetration in all types of welded joint. The following table shows common conditions for MIG welding.
| Wire diameter, mm |
Wire feed, m/min
|
Current, A
|
Voltage, V
|
Gas, l/min
|
|---|---|---|---|---|
| Short-arc welding |  |
|
|
|
| 1.0 |
4-8
|
60-140
|
15-21
|
12
|
| Spray-arc welding | |
|
|
|
| 1.0 |
6-12
|
140-220
|
23-28
|
18
|
| 1.2 |
5-9
|
180-260
|
24-29
|
18
|
| Pulsed-arc welding1) | |
|
|
|
| 1.2 |
3-10
|
150-250
|
23-31
|
18
|
| 1)Pulse parameters: | Peak current Background current Frequency |
300 - 400 A 50 - 150 A 80 - 120 Hz |
Sandvik can provide recommendations for shielding gases.
Short-arc welding is used with light gauge material of less than about 3 mm, in depositing root runs, and in welding out-of-flat positions.
The higher the inductance in short-arc welding, the higher the fluidity of the molten pool.
Spray-arc welding is normally used for heavier gauge material.
TIG welding
The parameters for TIG welding depend largely upon the base metal thickness and the welding application.
Electrode negative and a shielding gas of argon or helium should be used to prevent oxidation of the weld metal.
Approvals
CE, DB, DNV, TÜV
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.
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