This International Standard specifies the geometries and dimensions of projections for embossed projection welding. Tools to make the projections are also included as an informative Annex (see Annex B). The projections are used on hot-rolled, cold-rolled, uncoated and coated steels, stainless steels and nickel alloys for conventional welding quality up to 3 mm thickness, as single projections, in multiples or as a group of multiples. NOTE Any solid projections are not included in this standard.