a student of mine has done interesting regerlation experiments with different wires passing through a certain sized block of ice. The diameter of the wires was the same as well as the temperature of the ice block and the surroundings.
However, he has not been able to find thermal conductivities (k) for the alloys he used. It is quite hard to analyse the results without the values since he'd like to investigate the relation between the passing time and k. So I'm resorting to your generous help: would anyone have a data book reporting k's for the alloys mentioned below (alloys close to the mentioned alloys would also be helpful since a complete match might be a long shot). You might reply off-line (antti.savinainen(at)kuopio.fi or antti.savinainen(at)luukku.com)
Alternatively, does someone know whow to calculate the k for an alloy if the k's and percentages of metals forming the alloy are known?
Composition of Ag wire:
Cu 29.0 – 31.0 %
Ag 39.0 – 41.0 %
Zn 25.7 – 30.3 %
Sn 1.7 – 2.3 %
Composition of PCu wire
Cu 91.8 %
Ag 2.0 %
P 6.2 %
Composition of Al wire
Si 0.05 %
Mn 0.15 %
Al 94.65 %
Mg 5.0 %
Fe 0.15 %
Composition of the brass wire
Cu 60.20 %
Zn 38.28 %
Si 0.28 %
Sn 0.31 %
Mn 0.93 %
Composition of the
stainless steel wire
C 0.015
Si 0.85
Mn 1.75
Cr 18.5
Ni 12.0
Mo 2.7
Fe 64.2
Composition of the
steel wire
Fe 97.52
C 0.08
Si 0.90
Mn 1.50
Thanks in advance!
Antti
Antti Savinainen
Kuopio Lyseo High School
Finland
E-mail: <antti.savinainen@kuopio.fi>
Website: <http://kotisivu.mtv3.fi/physics/>
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