Sandvik Sanicro 69 description: Sanicro 69 is a covered electrode with basic coating for corrosion-resistant overlays on most low-alloy and stainless steels. It is also used for welding of alloys of Alloy 690 type (e.g. Sanicro 69) and dissimilar joints. The electrode has good welding properties and is well suited to joint welding, as well as overlay welding.