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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Properties and potential uses of zinc die casting metal for car parts.

Identifier  ExFiles\Box 179b\1\  img121
Date  21th October 1932
  
ORIGINAL
R1/21.10.32.
Sent off 25. 10. 32.
Y3701
) FROM R.{Sir Henry Royce}
HS.{Lord Ernest Hives - Chair} )
LL. )
PL. )
RDY. )
TO EC. WDE
re. ZINC DIE CASTINGS.
I notice there is considerable reference
now to the die casting metal of zinc with a small percentage of
aluminium, sometimes copper, and other elements.
Naturally this is not a light metal, and
would not be of much use for aero work.
It seems however to have some merits of
cheapness combined with anti-corrosive properties which may make
it useful to produce inexpensively many of the smaller car parts.
Its specific gravity appears to be about
6.6, which is somewhere between aluminium and ordinary type metal.
It is mentioned as good for petrol pumps, carburetter parts, and
in cases where aluminium is unsuitable.
One would imagine it was extremely tractable
for die casting.
E.{Mr Elliott - Chief Engineer}
  
  


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