Most Langley Alloys products have already been heat treated, either solution annealed or aged to achieve precipitation strengthening. However, further heat treatments can be beneficial, particularly for more heavily machined components.
Stress-relieving is a heat treatment undertaken at relatively lower temperatures, but for extended periods. The objective is not to significantly change the mechanical properties of the metal, but to effectively equalise any internal stresses that may exist as a consequence of the original manufacturing process. Alloys such as super duplex stainless steels can suffer from a degree of ‘movement’ during machining, which stress relieving reduces. Vertical stress relieving is the optimum configuration for longer shafts.