Piecewise hot dip galvanizing is used in order to improve the corrosion resistance. Strenx High Strength Steels up to Strenx 700 MC are very well suited for hot dip galvanizing if ordered in a specific condition with a certain Si-content. The mechanical properties of the steels are generally not influenced by the galvanizing process; for instance there is no influence on the fatigue properties of welded joints. However, it could be noticed that the fatigue strength of the base material is slightly reduced due to the zinc layer and the interface between the zinc layer and the steel surface. For Strenx 700 MC hot dip galvanizing typically reduces the fatigue strength of the base material by about 10 %.