Metal Category
Metallurgical Industry Classification: Ferrous metals: iron, chromium, manganese and three kinds of non-ferrous metals: aluminum, magnesium, potassium, sodium, calcium, strontium, barium, copper, lead, zinc, tin, cobalt, titanium bar stockist nickel, antimony, mercury, cadmium, bismuth, gold, silver, platinum, ruthenium, rhodium, palladium, osmium, iridium, beryllium, lithium, rubidium, cesium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, tungsten, molybdenum, gallium, indium, thallium, germanium, rhenium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium,
Common metals: such as iron, aluminum, copper, zinc and other metals: such as zirconium, hafnium, niobium, and tantalum;
1 light metal. Density less than 4500 kg / m³, such as aluminum, magnesium, potassium, sodium, calcium, strontium, and barium.
2. Heavy metals. Density greater than 4500 kg / m 3, such as copper, nickel, cobalt, lead, zinc, tin, antimony, bismuth, cadmium, mercury and the like.
3. Precious metals. Expensive than the plate titanium commonly used metal prices, low crustal abundance, purification difficulties, such as gold, silver and platinum group metals.
4 non-metallic elements. Properties at between metal and nonmetal such as silicon, selenium, tellurium, arsenic, boron, and the like.
5 rare. Including rare light metals such as lithium, rubidium, cesium, etc.;
6 rare refractory metals such as titanium, zirconium, molybdenum, tungsten, etc.;
7 dispersed rare metals such as gallium, indium, germanium, and thallium;
8 rare earth metals, such as scandium, yttrium, a lanthanide metal;
9. Radioactive metals, such as radium, titanium bar stock francium, polonium and actinides uranium and thorium.
The ductility of the metal is preferably gold (Au), good electrical conductivity at room temperature followed by silver (Ag), copper (Cu), aluminum (Al) and the like;
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