Lo-Ex
Lo-Ex is an aluminium alloy with a very small thermal expansion co-efficient. It contains approximately 14 per cent silicon, 2 per cent nickel, and 1 per cent each of copper and magnesium.{{cite book|title=Internal combustion engines illustrated|year=1947|publisher=Odhams Press Limited|location=Long Acre, London|page=85}}
Applications
It has been used extensively and successfully over the years for all types of piston,{{cite journal|last=R. Munro|title=Wellworthy get it under control|journal=Industrial Lubrication and Tribology|year=1978|volume=30|issue=6|pages=224–235|doi=10.1108/eb053170|url=http://www.emeraldinsight.com/journals.htm?issn=0036-8792&volume=30&issue=6&articleid=1688988&show=html|url-access=subscription}} including in Hillman Imp,{{cite web|url=http://www.imps4ever.info/tech/engine.html|title=The Imp Engine}} and Terraplane{{cite web|url=http://hetclub.org/burr/referencesheets/1936_terraplane_electrical_tune-up_specs.pdf|title=1936 Terraplane specifications}} engines.
LM13 is a related alloy in the Lo-Ex series, also widely used for diesel engine pistons. This alloy contains 12% silicon, 1% copper and 1% magnesium. Both of these alloys have also been used in a strengthened form, reinforced by an MMC or hybrid composite of alumina or zirconium ceramic fibres. These alloys have been worked by squeeze casting or stir casting.
References
{{reflist|refs=
|title=Modern Physical Metallurgy and Materials Engineering
|year=1999
|isbn=9780750645645
|publisher=Butterworth-Heinemann
|first1=R.E. |last1=Smallman
|first2=Ray J. |last2=Bishop
|url=https://books.google.com/books?id=_y5VKbZmp4EC&pg=PA370
|page=370
}}
}}
{{aluminium alloys}}