For expert welding advice, you can rely on Welding Engineers as a solid source of welding information. In this Weld Defects Resource Section, we offer advice on causes and remedies for some common defects we have seen in welding projects across New Zealand. 

Cold Cracks in Fillet Welds
Variations of cold cracks

Cold cracks are defined as cracks that occur at temperatures of 200-300°C or lower in carbon steel and low-alloy steel welds. Cold cracks can occur in both butt welds and fillet welds; however, this article will focus on those occurring in fillet welds.

Weld defects due to incomplete fusion

Weld defects can occur in the best of workshops and invariably lead to higher costs due to re-work and downtime. One typical defect we have seen examples of recently is incomplete fusion.

Cold Cracking-Low Hydrogen

Cold Cracking – Use of Low Hydrogen Filler Metals to Reduce Risk

We have seen several instances of cold cracking in welds when visiting customers. The standard of welding work and adherence to correct procedure was not an issue, so the question was why it occurred and what can be done to avoid a repetition.