... it is not a question of material strength, but a matter of resistance to corrosion. Due to its higher Molybden content, A4 Stainless Steel is more corrosion-proof against agressive substances. For this reason, it is widely used in the chemical industry, as well as the food processing industry. All tanks, pipes and valves coming into contact with food are made of A4 Stainless Steel. Therefore Gesipa produces a range of blind rivets in the same material in order to offer safe and reliable fastening in such an environment.