Sandvik 59S (Welding flux)
Datasheet updated 2011-12-16 16:36:54 (supersedes all previous editions)
Sandvik 59S is a highly basic, agglomerated flux for electroslag strip surfacing. It gives excellent slag removal and bead appearance. Flux Sandvik 59S is used together with strip electrodes of nickel alloy type, such as ERNiCr-3, ERNiCrMo-3, ERNiCu7 and ERNiCrFe-7 or similar.
Chemical composition (nominal), %
| SiO2 | Al2O3+TiO2 | CaO+MgO |
|---|---|---|
| 5 | 20 | 50 |
Flux data
| Bulk weight | 1.0 kg/l |
|---|---|
| Basicity (Boniszewski) | 5.0 |
| Current capacity using 60 x 0.5 mm strip electrode |
3000 A |
| Flux consumption | 0.6 kg/kg strip electrode |
| Redrying, when necessary | 350°C, 4 h |
Strip welding
Alloying vector
The alloying vector describes the difference in chemical composition between the filler metal and the undiluted all-weld metal due to the influnce of the flux.
| Element | Sandvik strip electrode | |
|---|---|---|
| Sanicro 72HP ERNiCr-3 |
Sanicro 69HP (ERNiCrFe-7) |
|
| C | 0 | 0.003 |
| Si | 0 | +0.1 |
| Mn | -0.35 | -0.1 |
| Cr | -0.2 | -0.7 |
| Ni | +1.5 | +1.3 |
| N | +0.001 | +0.001 |
| Nb | -0.35 | -0.15 |
Welding parameters
Direct current, with electrode positive is normally used.
| Strip electrode | Current, A | Voltage, V | Travel speed, mm/min |
|---|---|---|---|
| 30x0.50 | 500-700 | 24-28 | 140-180 |
| 60x0.50 | 1100-1300 | 24-28 | 140-180 |
| 90x0.50 | 1650-1800 | 24-28 | 140-180 |
Surfacing
The chemical compositions below are typical results after weld surfacing on A508 class 3.
| Alloy type | 600 | 690 |
|---|---|---|
| No. of layers | 2 | 2 |
| Strip electrode | Sanicro 72HP | Sanicro 69HP |
| C | 0.01 | 0.01 |
| Si | 0.3 | 0.3 |
| Mn | 2.7 | 1.2 |
| Cr | 19.6 | 29.3 |
| Ni | 71.9 | 56.6 |
| Mo | 0.1 | 0 |
| Nb | 2.5 | 1.8 |
| N | 0.02 | 0.03 |
| Fe | 2.9 | 10.5 |
| Alloy type | 600 | 690 |
|---|---|---|
| No of layers | 3 | 3 |
| Strip electrodes | Sanicro 72HP | Sanicro 69HP |
| C | 0.01 | 0.01 |
| Si | 0.3 | 0.3 |
| Mn | 2.7 | 1.2 |
| Cr | 19.7 | 29.7 |
| Ni | 72.0 | 57.3 |
| Mo | 0.1 | 0 |
| Nb | 2.5 | 1.8 |
| N | 0.02 | 0.04 |
| Fe | 2.5 | 9.3 |
All four surfacings have passed side bend testing (ASME IX) after heat treatment at 610°C for 24 hours.
Wire welding
Alloying vector
The alloying vector describes the difference in chemical composition between the filler metal and the undiluted all-weld metal due to the influnce of the flux.
| Element | Sandvik wire electrode | |
|---|---|---|
| Sanicro 72HP ERNiCr-3 |
Sanicro 69HP (ERNiCrFe-7) |
|
| C | 0 | 0.003 |
| Si | 0 | +0.1 |
| Mn | -0.35 | -0.1 |
| Cr | -0.2 | -0.7 |
| Ni | +1.5 | +1.3 |
| N | +0.001 | +0.001 |
| Nb | -0.35 | -0.15 |
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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