Which kind of metal conducts heat best?
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Heavy Metal! Just joking. http://www.scienceproject.com/projects/intro/elementary/EX057.asp Go here, they have a lot of information.\n\nhttp://www.science.ca/askascientist/viewquestion.php?qID=1216 And this one. It is clear that aluminum conducts the best heat.
368284
Traditionally, metals have certain characteristic physical properties: they are usually shiny (they have "lustre"), have a high density, are ductile and malleable, usually have a high melting point, are usually hard, and conduct electricity and heat well. However this is mainly because the low density, soft, low melting point metals happen to be reactive, and we rarely encounter them in their elemental, metallic form. Metals are also sonorous, which means that they conduct sound well.\n\nAnd not all metals are magnetic!\n\nPalladium is a soft silver-white metal that resembles platinum. It doesn't tarnish in air. Palladium is the least dense and has the lowest melting point of the platinum group metals. It is soft and ductile when annealed and greatly increases its strength and hardness when it is cold-worked. Palladium is chemically attacked by sulfuric and nitric acid but dissolves slowly in hydrochloric acid. This metal also does not react with oxygen at normal temperatures.
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malleable and ductile lustrous conduct heat and electricity high melting points almost all are solids at room temp except mercury
95862
it gets hot, which in turn causes more resistance, and it gets even hotter, which causes more resistance.  if there are enough amps, the metal will melt.
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generally speaking it goes from greatest conductivity = lowest temprature to least conductivity = highest temp.  Heat increases the randomness and thereby slows conductivity.
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muscle wire, a nickel-titanium alloy, although it actually contracts from the heat caused by the electric current.\n\nmay not be what you had in mind, but you could build a cool robot with it I bet.
112062
Heat conductivity? electrical?
43501
Its a Metal, hence responds to / is a conductor of heat.\n\nIts fluid so the expansion per gradient of heat would be highest.\n\n\nAll other liquids are not a conductor of heat ( or as good as mercury)
940458
Of the ones you listed Aluminum would be the best mostly because it is a metal.
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Copper has a higher melting and boiling point and better electrical conductivity.\n\nIf you are a die caster, Zinc would be better because it can be easily pressure die-cast and hence better accuracy in the cast component with minimal metal removal for finishing.
878521
Copper. It is so brilliant
517351
The pure type of metal and the alloy
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Given a fixed power of heat input water would take longer due to its specific heat capacity being large.  4180Joules/kg/degree, compared with 450 for iron & 880 for Aluminium (figures STRICTLY only from memory and not to be relied on)\nOther than that are consideration of good conduction of heat in metals versus convection transporting the heat quickly within the water.\nAlso practically speaking, you might need to allow for evaporative heat loss from the water surface.
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Solid in room temp, but melts in your hand (slightly above room temp)\n\nAlloys quickly with most metals.\n\nYou can read more at the following:
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Aluminum is 2.9 times as dense as iron. On the other hand, iron has roughly half the specific heat as aluminum.\n\nSpecific heat is measured in terms of how many calories of energy it takes to raise the temperature of one gram one degree centigrade. \n\nGiven two equal masses of aluminum and iron, the aluminum with the higher specific heat will take more energy to heat and give of more energy cooling. As a result, it will take longer to heat and cool. \n\nHowever, given two equal volumes of aluminum and iron, the aluminum will have only 1/3 the mass and therefore will need throw off only 2/3s as much heat to cool as the iron.
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Water evaporates at 100 degrees, celsius, so the liquid water you touched wouldn't be any hotter than that. The metal, on the other hand, does not. So it would be as hot as the object which is heating it.
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Heat sinks are commonly made of a good thermal conductor such as copper or aluminum alloy. Copper is significantly more expensive than aluminum but is also a better thermal conductor. Aluminum has the significant advantage that it can be easily formed by extrusion, thus making complex cross-sections possible. The contact surface of a heat sink must be flat and smooth in order to ensure the best thermal contact with the object to be cooled. Sometimes a thermally conductive grease is employed to ensure the best thermal contact, such greases often contain colloidal silver (an even better thermal conductor than copper.)