Sandvik 19.9.LR (Covered electrodes)
Datasheet updated 2012-08-03 08:59:25 (supersedes all previous editions)
Sandvik 19.9.LR is a covered chromium-nickel electrode with rutile-acid coating for welding of steels of ASTM 304 types as well as overlays giving 308 type composition.
The electrode has excellent arc stability and fast burn off rate with minimal stub loss. It is also characterized by improved moisture resistance, self peeling slag, easy post weld finishing. Sandvik 19.9.LR gives smooth uniform beads and works in any standard weld position.
Applications
Sandvik 19.9.LR is used for welding steels of the following types:
| UNS | S30400, S30403, S30409 and S30453 |
| ASTM | 301, 304L, 304LN, 304 and 302 |
In cases where creep strength is of secondary importance Sandvik 19.9.LR is suitable for welding stabilized austenitic steels, e.g. ASTM 321 and 347. When a weld metal similar to the parent metal is not required Sandvik 19.9.LR can be used for welding ferritic and martensitic steels.
Standards
- AWS E308L-17
- EN number E 19 9 L R
Chemical composition - all weld metal
The following data are valid for all-weld metal.
|
C
|
Si
|
Mn
|
Cr
|
Ni
|
|---|---|---|---|---|
|
<0.03
|
0.8
|
0.6
|
19.5
|
10
|
Microstructure - weld metal
Austenitic matrix with a ferrite content of 5–10 FN according to DeLong.
Mechanical properties- weld metal
The following data are valid for as welded all-weld metal.
| Yield strength, RP0.2 | MPa | 470 |
| Tensile strength, RM | MPa | 570 |
| Elongation, A5 | % | 37 |
| Hardness | HB | 200 |
| Temperature, °C | 20 | -40 |
|---|---|---|
| KV, J | 60 | 55 |
Corrosion properties - weld metal
Sandvik 19.9.LR is resistant to intergranular corrosion according to ASTM A262 practice E in the as-welded and quench-annealed condition.
Marking
| Printing | Sandvik 19.9.LR/308L-17 |
|---|---|
| Tip colour | - |
Approvals
- CE
- DNV
- TÜV
Contact your nearest sales office for full details.
Deposition and working data
| Electrode diameter, mm | 1.6 | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 |
|---|---|---|---|---|---|---|
| Length, mm | 250 | 300 | 350 | 350 | 450 | 450 |
| Deposition rate, kg weld metal/h (approx) |
0.6 |
0.7 |
1.1 |
1.5 |
2.2 |
3.1 |
| Effective value, kg weld metal/kg electrodes |
0.51 |
0.58 |
0.57 |
0.59 |
0.60 |
0.66 |
| Change value, electrodes/kg weld metal |
276 |
144 |
77 |
46 |
23 |
15 |
| Burn-off time per electrode at max current, s |
22 |
35 |
44 |
62 |
63 |
68 |
| Metal recovery, % | 109 | 107 | 109 | 109 | 108 | 103 |
|
Welding positions
|
Diameter <=3.2 mm
|
All except vertical down
|
|---|---|---|
|
Diameter >=4.0 mm
|
Preferably flat position
|
|
|
Current/polarity
|
DC+ or AC
|
|
| Diameter, mm | Current, A |
|---|---|
| 1.6 | 25–45 |
| 2.0 | 30–55 |
| 2.5 | 45–70 |
| 3.2 | 60–110 |
| 4.0 | 90–150 |
| 5.0 | 150–200 |
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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