Platinum is the most widely used metal in platinum group metals.
Platinum has excellent performance and is widely used in many areas. In the jewelry industry,it is mainly used for ornaments and handicrafts. In the chemical industry, it is made into catalysts for advanced chemical vessels, platinum crucibles, electrodes, and accelerated chemical reactions.Platinum-iridium alloy is also the material that makes fountain pen nib.
The color and luster of platinum is natural.The hardness is 4 ~ 4.5 degrees.The relative density is 21.45, and the proportion is 15 ~ 19 or 21.4.The ductility is strong, and can be drawn into very thin platinum wire and rolled into extremely thin platinum foil; Its strength and toughness are also much higher than other precious metals. A gram of platinum can be extended to 1.6 kilometers long ithout breaking. The melting point of platinum is 1773.5 ℃. Thermal conductivity is good.The chemical properties are extremely stable, insoluble in strong acid and strong alkali, and do not oxidize in the air. Platinum does not absorb mercury and has a unique catalytic effect.