Uses and General Remarks for Standard Aluminium Graded Castings  
 
LM0
LM2
LM4
LM5
LM6
LM9
LM12
LM13
LM16
LM20
LM21
LM22
LM24
LM25
LM26
LM27
LM28
LM29
LM30
LM31
Electrical, Food and Chemical Plant
Pressure Die Cast Components
Popular alloy for sand , gravity and low pressure diecast engineering components; cylinder heads, manifolds, engine mounts, gear boxes etc.
Sand and chill castings where corrosion resistance is needed; Marine, food, Chemical Plant
Sand and chill castings particularly for thin-walled intricate castings
Has the casting characteristics of LM6 but can be heat treated to higher strength
Sand and Chill Cast; used where a good machined surface is needed hydraulic brake castings
Sand or chill; Used for pistons
Intricate sand or chill castings, good strength after heat treatment cylinder heads and blocks, etc.
Mainly used for pressure die castings, but can be sand cast. Better corrosion resistance than LM24
Sand or chill cast, similar to LM4 but higher proof stress
Usually chill cast and solution treated. Good shock resistance used for heavy duty castings
Popular pressure diecasting alloy
Popular sand, and chill casting alloy, good for thin section, leak-tight castings, good corrosion resistance; cylinder heads, blocks, wheels , etc.
Pistons for petrol and diesel engines
Versatile sand and chill casting alloy for thick or thin sections, slightly superior to LM4 used for the same applications
High performance pistons, best cast in permanent moulds to optimise structure
As LM28 but lower coefficient of expansion Like LM28, needs special foundry technique
Used for pressure diecast, unlined cylinder blocks; low expansion and good wear resistance
Used for large sand castings, good shock resistance
 
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