There are several methods that can be applied for joint preparation. Those methods are the same for joint preparations of all unalloyed and low-alloyed steels as for the Hardox® and Strenx® grades. The most common preparation methods are thermal cutting, milling and grinding. In addition, shearing and punching can be used, however their usage is limited to the Strenx® grades and for Hardox® grades with hardness values up to 450 HBW.
If thermal cutting is used, a thin oxide or nitride layer will be present that is approximately up to 0.2 mm (0.008”) thick. These layers are removed before welding, usually by grinding.
Suitable recommendations for thermal cutting can be found in How to cut and the machining recommendations in How to machine.
The information in this report is only applicable to SSAB’s products and should not be applied to any other products than original SSAB products.
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