Superior Weldability for Versatile Applications
High sulphur content is good--at making steel look bad. It can also create difficulties in welding, leading to such defects as embrittlement, porosity, and cracking.With desulphurised steel, customers can widen their design possibilities. For example, it is quite common to use corner strengthening methods or full flange reinforcements on junctions which were previously regarded as 'dead'. This means that even wells have little possibility of leakage--yet generally such parts are saved in given shapes only through bending and gouging (ie alteration); where casting costs are by comparison much less expensive.As for shipbuilding or construction customers, desulphurized steel has another advantage. Here it is not only good at arresting crack breaks in large joints (with countless little welds), but provides conditions conducive to complete fusion welds. Weld metal precipitation lines are virtually non–significant and, simply speaking, one could say that this makes a big difference during once-welded reworks on site.
One of the most important potential benefits of desulphurized steel for shipbuilding or construction customers is large joints. Without such guarantees, it is unlikely that welding will be entirely successful.