Metals/Alloys - Melting and Annealing
Assumptions and Limitations
New materials are being developed every day and new alloys are no exception. Whilst the table below can be used as a general guideline to some of the physical properties of commonly encountered metals and alloys in the structural engineering world it is advisable to confirm details with the supplier or manufacturer.
The melting point of alloys depends on the exact chemical composition and can vary with the addition of alloy agents. Unlike pure metals most alloys do not have a single melting point, but instead a melting range starting with a solidus phase in which melting begins and a liquidus phase where the melting is just complete.
Annealing is used to soften alloys to make them more workable or in some cases to increase there strength by taking some of the brittleness out of the material. Typically the material is heated up to its annealing temperature and held for a given amount of time or allowed to cool slowly.