Or what is probably the most valuable metal? A number of the oldest known metals will be Gold, Silver, Copper, Iron, Tin and Lead and they are still probably the most useful and widely used metals.
Metals are solid not transparent, they have luster and are heavy. I guess you could include Mercury as a metal yet this is a liquid. Another is Solium, that is solid but very light in weight.
And I found that probably the most valuable metal is not the main one most people think! Most people would say Gold, however they would be wrong. By the price per once yes, but you would be wrong in the event that you looked at the usage of each, Iron gets the most uses for it.
You can find three forms which differ very much in their properties. There is Cast-Iron easily fusible and rather brittle. ลวดเชื่อมเงิน I remember dropping one of my grandmothers lids off the coal stove that she used to cook with and we had to buy a new one because, it was a kind of cast iron and it cannot be forged or welded.
Then there’s Wrought-Iron, fusible only at large temperatures, but could be hammered out flat, welded and drawn out in a kind of wire. A friend of mine used to control a wire rope manufacturing facility in Pennsylvania and I was basically just amazed at what they might do with this metal, making it look almost like fabric rope, but often the strength, it had been used to build bridges, elevators, tow barges and hold up water towers etc..
The next is Steel, probably the most wonderful element we produce with Iron, it really is malleable and may be welded. The great property of Steel it acquires when tempered is an extremely hard degree of hardness.
A simple explanation of these metals is that the most noticeable function is in the chemical substance composition of the different grades of iron may be the percentage of carbon it includes. Thus Pig-iron provides the most carbon, Steel another lowest and Wrought-iron the least.