Ferrous metals: iron, chromium and manganese. Non-ferro […]
Ferrous metals: iron, chromium and manganese.
Non-ferrous metals: aluminum, magnesium, potassium, sodium, calcium, strontium, barium, copper, lead, zinc, tin, cobalt, nickel, antimony, mercury, cadmium, antimony, gold, silver, platinum, rhodium, iridium, palladium, iridium , Hey, hey, lithium, lanthanum, cerium, titanium, zirconium, vanadium, niobium, tantalum, tungsten, molybdenum, gallium, indium, lanthanum, cerium, lanthanum, cerium, lanthanum, cerium, lanthanum, cerium, lanthanum, cerium, lanthanum , Dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, thorium.
Common metals: such as iron, aluminum, copper, zinc, etc.
Rare metals: such as zirconium, hafnium, tantalum, niobium, etc.
Light metal: density less than 4500 kg / cubic meter, such as titanium, aluminum, magnesium, potassium, sodium, calcium, barium, strontium and so on.
Heavy metals: density greater than 4500 kg / cubic meter, such as copper, nickel, cobalt, lead, zinc, tin, antimony, bismuth, cadmium, mercury and so on.
Precious metals: The price is more expensive than common metals, and the abundance of the crust is low (also known as CLARKE value, a value indicating the average content of chemical elements in the earth's crust). It is difficult to purify, such as gold, silver and platinum group metals.
Metalloid elements: Properties are between metal and non-metal, such as silicon, selenium, tellurium, arsenic, boron, etc.
Rare metals: including rare light metals such as lithium, strontium, barium, etc.;
Rare refractory metals: such as zirconium, molybdenum, tungsten, etc.;
Rarely dispersed metals: such as gallium, indium, antimony, antimony, etc.;
Rare earth metals: such as lanthanum, cerium, lanthanide metals;
Radioactive metals: such as uranium and thorium in radium, thorium, thorium and actinides.