Development Of Stainless Steel Welding Wire For Galvanized Steel Sheets

Welding of stainless steels 1 0 introduction stainless steels are defined as iron base alloys which contain at least 10 5 chromium.

Development of stainless steel welding wire for galvanized steel sheets.

Stainless steel and galvanized materials often are found together in the industry with applications such as galvanized fasteners stainless steel pressure vessels and roof and siding panels. The thin but dense chromium oxide film which forms on the surface of a stainless steel provides corrosion resistance and prevents further oxidation. For galvanized steel plates with a strength of over 600mpa the welding rods of e6013 e5503 and e5513 should be selected. For galvanized steel plates with a strength level above 500mpa e5001 e5003 welding rods should be used.

When galvanized sheets are welded zinc near a weld molten pool evaporates. The presence of two dissimilar metals in an assembly is not always a sign of trouble but it could be a problem. This process causes the iron and zinc layers to diffuse into one another causing the formation of zinc iron alloy layers at the surface. There are five types of stainless steels depending on the other.

Similar to galvanized steel is galvanneal steel. The use of austenitic stainless steel welding materials with suitable ductility and high corrosion resistance appears to be beneficial. For mild steel galvanized steel sheet j421 j422 or j423 welding rods should be preferred.