In contrast to reinforcement corrosion due to carbonation of the concrete no consensus about the long-term and most economical measures for chloride-induced corrosion is available (new building or repair). The application of stainless steel reinforcement is one possibility to improve the durability of reinforced concrete structures. However, in many cases the limitations of use of such steels are not clarified yet and standardised test procedures are needed to determine and compare the corrosion behaviour of different steel qualities in chloride contaminated concrete rapidly, economically and reliably. The standard SIA 262/1 "Betonbau – Ergänzende Festlegungen" contains no requirements to the corrosion resistance of reinforcing steel. This gap is to be filled with a SIA guideline for the application of stainless steels in concrete structures. The guideline shall not only contain corrosion-technical notes for the use of stainless steel, but also illustrate possible characteristics regarding design and design-engineering. Additionally the guideline shall contain also a validated corrosion test procedure including requirements to test the manufacturer products at their own expense. Such a test procedure does not exist until today and therefore has to be developed by laboratory investigations.