Why tungsten is the most hardness metal? (1 of 3 H)

Why tungsten is the most hardness metal? (1 of 3 H)
1 of 3 H

Tungsten is the most hard metal from nature which we may find in the earth.

Actually, the nature tungsten, also named wolfram is not the most hardness unless it is processing by the modern industry. But we it is taken from the wolfram mines as ore, and milling, smelting into powder, and press in the specific mould with binder ex. 1) cobalt, nickel, copper, ferro, Molybdenum and some rare earth metal and 2) some physical binder as Rubber, candle or alcohol, and later let the pressed blank to be sintered via high temperature furnace. We may get the sintered blank of tungsten carbide, as tips, inserts, buttons, and they can be used for mining, drilling and cutting for many application as mining, drilling and oil etc.

If we would like to get a specific dimensions with a critics tolerances, we should have some processing machining, maybe cutting, centeless milling and other machining with CNC.

Of course, the raw materials of tungsten carbide are tungsten carbide powder and the metal binders but not pure tungsten powder. The binder is most important for hardness of tungsten carbide , and the carbon is also important for the property of hardness, for everyone knows, the most hardness materials in the nature is not tungsten but diamond which contents of carbon, so one on the reason of why tungsten carbide is the most hardness metal is carbon.

Tungsten carbide also named cemented carbide, the reason maybe it is another one of cemented materials.
(to be continued)