Sandvik 31S (Welding flux)
Datasheet updated 2011-12-16 16:31:57 (supersedes all previous editions)
Sandvik 31S is a neutral unalloyed agglomerated flux giving good slag removal and fine bead appearance. Sandvik 31S is intended primarily for welding with strip or wire electrodes of the 310LMo type, such as Sandvik 25.22.2.LMn, for urea applications.
Standards
- EN number 760 S A CS 2
Alloying vector
The alloying vector describes the difference in chemical composition between the filler metal and the undiluted all-weld metal due to the influence of the flux. The following table presents data for Sandvik 31S in combination with Sandvik 25.22.2.LMn strip electrode.
| Element | Alloying vector |
|---|---|
| C | +0.01 |
| Si | +0.5 |
| Mn | -0.7 |
| Cr | -0.7 |
| Ni | 0 |
| Mo | 0 |
| N | 0 |
Chemical composition (nominal), %
The following data are typical for non-heat treated all-weld metal from submerged-arc welding with Sandvik flux 31S and Sandvik wire electrodes.
| Sandvik 25.22.2.LMn | C | Si | Mn | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|
| Strip electrode | 0.022 | 0.63 | 3.6 | 24.2 | 22 | 2.0 | 0.13 |
| Wire electrode | 0.025 | 0.65 | 3.8 | 24.5 | 22 | 2.0 | 0.12 |
Flux data
| Bulk weight | 0.9 kg/l |
|---|---|
| Basicity (Boniszewski) | 1.0 |
| Current capacity using 60 x 0.5 mm strip electrode |
1200 A |
| Flux consumption | 0.7 kg/kg strip electrode |
Mechanical properties
Sandvik flux 31S gives the following mechanical properties in combination with Sandvik 25.22.2.LMn strip electrode.
| Sandvik 25.22.2.L | Rp0.2, MPa | Rm, MPa | A5, % | KV, J | ||
|---|---|---|---|---|---|---|
| 20°C | -40°C | -196°C | ||||
| Strip electrode | 320 | 560 | 50 | 125 | 115 | 65 |
| Wire electrode | 380 | 570 | 40 | 75 | - | 40 |
Welding parameters
Direct current, with electrode positive is normally used for joint welding to give good penetration.
| Strip dimensions, mm | Current, A | Voltage,V | Travel speed, mm/min |
|---|---|---|---|
| 30 x 0.5 | 400-500 | 26-30 | 100-180 |
| 60 x 0.5 | 700-900 | 26-30 | 100-160 |
| 90 x 0.5 | 1100-1500 | 26-30 | 100-160 |
| Wire diameter, mm | Current, A) | Voltage,V) | Travel speed, mm/min |
|---|---|---|---|
| 1.6 | 250-450 | 28-32 | 200-400 |
| 2.4 | 300-500 | 29-34 | 250-500 |
| 3.2 | 400-600 | 30-35 | 250-600 |
| 4.0 | 500-700 | 30-35 | 250-600 |
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.
Send PDF via email
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