Outokumpu Ultra range products have very good formability and are suitable for the full range of forming processes for stainless steel. The somewhat higher yield strength – and in some cases lower fracture elongation compared to the most common standard austenitic steel grades – can result in small differences in forming behavior depending on the chosen forming process, such as an increased springback.
Austenitic stainless steels work harden quickly. Together with their high toughness, this means that they are often perceived as problematic from a machining perspective, for example in operations such as turning, milling, and drilling. However, with the right choice of tools, tool settings, and cutting speeds, these products can be successfully machined.
Outokumpu Ultra range steels are well suited for welding, and the methods used for welding conventional austenitic steels can also be used on these products. However, due to their stable austenitic structure, they are somewhat more sensitive to hot cracking in connection with welding, so in general welding should be performed using a low heat input.