BÖHLER A405

BÖHLER A405 is a stainless austenitic Cr-Ni-Mo steel with nitrogen content and extremely low carbon content. Resistant to intergranular corrosion up to 400°C.
Heat treatment after welding is not required. Required surface finish: pickled. Very good cold formability. Very good polishability.
The chemical composition has been optimised for specific use in urea systems. It is a modified austenitic stainless steel 310L with low carbon and silicon content and nitrogen addition to stabilise and strengthen the austenitic phase. The alloy has been specially developed for improved corrosion resistance properties in urea carbonate environments. The grade is also suitable for wet corrosive environments due to its high chromium, molybdenum and nitrogen content (PREN > 33). For components with the highest resistance requirements to boiling, concentrated nitric acid and solutions with a high chloride content at high temperatures, as well as for highly stressed systems in the urea industry, e.g. urea separators or complementary products (pipes, fittings, etc.).