Aluminium Alloy - LM4
Suitable for most general engineering purposes including crankcase, junction boxes, gear boxes, clutch case, switch gear covers, Instruments cases, tool handles, and where moderate mechanical properties are desirable. Its casting characteristics permit it to be used for the production of moderately thin forms and also for castings required to be pressure tight. In the heat treat state it may be used for castings required to maintain a relatively high static loading.
LM4 is equally suitable for the production of sand and permanent mould castings. It can be die cast but the higher silicon alloys such as LM2 and LM24 are generally to be preferred.
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