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What Temperature Does Gold Melt At?

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James Harden Profile
James Harden answered
The melting point of gold is 1337K, which is 1064 degrees Celsius, both to four significant figures, at standard pressure, that is, at 1 atmosphere, or approximately one hundred kiloPascals. The melting points of substances change with pressure, this is because as pressure increases, the compressive forces on the molecules increase and the metal ions (in this case, gold ions) cannot move out from the metallic lattice as easily and hence the average amount of kinetic energy (that is, temperature) that the ions possess must be higher to compensate for this increased force. The converse argument also applies and hence a decrease in pressure will cause the melting point of gold to decrease. The figure stated, 1337K, is only correct when the pressure is one atmosphere, (or 100 kiloPascals, the definitions of a standard pressure are different depending on which international system is accepted, however 100 kiloPascals is 0.986 atmospheres, so there is very little difference between the two) and still then is only correct for pure gold. Pure gold is hardly ever used commercially, as it is too malleable. Gold is blended with copper to produce a mixture or alloy, which can be used in industry or jewellery. The proportions in which gold and copper are mixed are measured in carats. 

It is a well known story that Archimedes of ancient Greece, upon finding a way to test the purity of a gold crown without damaging it, ran through the streets exclaiming "eureka!" stark naked. He discovered that the density of a sample of gold differs with its purity, and so by a simple downward displacement of water, the purity of the gold crown could be estimated with no damage to the crown. Whether this story is true, an analogous property holds for the melting point of gold. Pure gold will melt at a much higher temperature than most of its alloys, the point where a mixture has its lowest melting point is called the eutectic point. In the case of gold and silicon (both of which have melting points above 1300K in pure form) the melting point of the eutectic mixture is only around 600K. However the eutectic composition of gold and copper only has a melting point of around 1100K, which is approximately 800 degrees Celsius.

For more information on gold, go on en.wikipedia.org/wiki/Gold This was, I found, the most helpful source in researching the properties of gold. A phase diagram of gold and copper can be found here at mtdatasoftware.tech.officelive.com/phdiagrams/aucu.htm
Anonymous Profile
Anonymous answered
Yellow gold melts at 1064.43 C, 1947.97 F, 1337.58 K, 18K at 1675 F and 14K at 1550 F.
d ds Profile
d ds answered
Gold has a symbol of Au and an atomic number of 79 and is quite commonly used in making jewelry. It is the most malleable and ductile pure metal known to us. It is found in its solid form in nature. Its melting point is 1063.18 degrees centigrade or 1947.52 Fahrenheit. The boiling point of Gold is 2856 degrees centigrade or 5173 Fahrenheit. This means that to melt gold, you need really high temperatures that can be achieved in kilns that are heated to high temperature. When gold is in its molten form, it can be molded into different shapes.
Anonymous Profile
Anonymous answered
1064 celsius
Anonymous Profile
Anonymous answered
I think gold melts at 1562 f
Anonymous Profile
Anonymous answered
I heard that 14 karat gold melts at 1400 farenheight, the other part of it that is not gold is copper which melts at 1000 farenheight. I do not think a plumbers torch will work, a plumbers torch only is about 1000 farenheight.

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