This alloy is a little difficult to machine since the high silicon content causes rapid tool wear. It is, however, far easier than the LM6 and LM20 alloys as the tendency to drag is practically eliminated by the presence of copper and other elements.
Carbide-tipped tools are advocated but high speed steel tools give good results. A cutting lubricant and coolant should be employed.
Essentially a diecasting alloy, LM2 is not normally used for other types of casting. As a general purpose alloy its applications are extremely varied and widespread and it may be used for almost any component which can be diecast, unless the service conditions demand a higher resistance to corrosion or slightly greater ductility, in which case LM6 or LM20 maybe preferred.
For the vast majority of diecastings, the alloys LM2 and LM24 are equally suitable.
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