Is there any pure metal or alloys of metals having a melting point nearly 5000 degree celcius?
Answer:
Different refractory materials are used for different purposes. But for High temperature processes usually metal oxides (ceramics) are used instead of pure metals or alloys. Zirconium is a good example. it can withstand 1200-1300 degree celcius as far as I know. About tungsten molibdenum or etc. metals with high melting points are nice but EXPENSIVE which is a pretty important factor in engineering. We engineers take about half of the melting temprature as service temperature. For your question, the service temperature is 5000 celcius, that means we need a material with 10000 celcius melting temperature. Since there is no such material, scientists use magnetic fields instead of refractory materials. For examle, while recycling tetra pak material, the process reachs 15000 celcius which is 3 times more than sun's surface temp.
No. If metals are used in systems using that kind of temperatures (which is somewhat rare) the metal parts of the apparatus will be actively cooled to below their melting point.
The melting point of tungsten is 3410 deg C, which is the highest melting point of any metal or alloy. If you want to go beyond this you need a ceramic material.
According to the research I just did, the most "durable metal is Tungsten. By creating any alloy you inherently weaken a metal. Therefore you will find that pure Tungsten has the highest melting point available among metals. In order to reach temperatures of 5000degC you would have to have a Carbon based material.
No metal on the earth could withstand that high of a temperature. The sun has a surface temperature of 5315 C. So you are approaching the temperature of the Sun. You will have to use a ceramic based material. I dont think you are going to find anything that can stand up to that much heat.
Answer to your question is NO pure metal or alloys have melting points higher than 5000 °C. At 4215 °C, tantalum hafnium carbide (Ta4HfC5) has the highest melting point of any know metal alloy. It is one of the most refractory substances known.
http://en.wikipedia.org/wiki/tantalum_ha...
http://en.wikipedia.org/wiki/melting_poi...
http://www.britannica.com/eb/article-903...
http://melting_point.totallyex...
your going to say the largest fireball(the sun) only reachs 5315 C, I think thats rather ridiculous. It gets so hot there is radiation expended. That is the surface, the interior gets much hotter, its said to be tens of millions of kelvin
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: