Sandvik 24.13.LR (Covered electrodes)
Datasheet updated 2012-08-03 09:03:51 (supersedes all previous editions)
Sandvik 24.13.LR is a covered chromium-nickel electrode with rutile-acid coating used for first-layer overlay welding of carbon or low-alloy steels. It is also used for joining of dissimilar materials.
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 24.13.LR gives smooth uniform beads and works in any standard weld position.
Applications
Sandvik 24.13.LR is used for welding in all positions of stainless steels to carbon or low-alloy steels. Used for buffer layer in overlay welding, Sandvik 24.13.LR gives a 304 composition in the first layer. Sandvik 24.13.LR can also be used for welding of some high-temperature steels, such as 309S.
Standards
- AWS E309L-17
- EN number E 23 12 LR
Product standards
- EN ISO 1600
- ASME/AWS SFA5.4
Chemical composition - weld metal
The following data are valid for all-weld metal.
|
C
|
Si
|
Mn
|
Cr
|
Ni
|
|---|---|---|---|---|
|
<0.02
|
0.8
|
0.8
|
23
|
13
|
Microstructure - weld metal
Austenitic matrix with a ferrite content of 10–15 FN according to DeLong.
Mechanical properties - weld metal
The following data are valid for as welded all-weld metal.
| Yield strength, RP0.2 | MPa | 450 |
| Tensile strength, RM | MPa | 550 |
| Elongation, A5 | % | 35 |
| Hardness | HB | 210 |
| Temperature, °C | 20 | -40 |
|---|---|---|
| KV, J | 50 | 45 |
Corrosion properties - weld metal
Sandvik 24.13.LR is resistant to intergranular corrosion according to ASTM A262 practice E in the as-welded and quench-annealed condition.
Marking
| Printing |
Sandvik 24.13.LR/309L-17
|
|---|---|
| Tip colour |
-
|
Approvals
- CE
- CWB
- DNV
- TÜV
Contact your nearest sales office for full details.
Deposition and working data
| Electrode diameter, mm | 2.5 | 3.2 | 4.0 | 5.0 |
|---|---|---|---|---|
| Length, mm | 350 | 350 | 450 | 450 |
| Max deposition rate, kg weld metal/h (approx) |
1.02 |
1.58 |
2.07 |
3.11 |
| Effective value, kg weld metal/kg electrodes |
0.60 |
0.61 |
0.63 |
0.68 |
| Change value, electrodes/kg weld metal |
82 |
43 |
29 |
18 |
| Burn-off time per electrode at max current, s |
43 | 52 | 61 | 64 |
| Metal recovery, % | 119 | 114 | 112 | 112 |
Working data
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 |
|---|---|
| 2.5 | 50–80 |
| 3.25 | 80–120 |
| 4.0 | 100–160 |
| 5.0 | 160–220 |
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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