Classification of metals, principles of their separation and differences
49520
26.12.2017
Oddly enough, but united classification of metals There are a number of reasons for this. One of the usual types of classification is to divide materials as follows:
- Ferrous metals;
- Steel;
- Cast irons;
- Non-ferrous metals and alloys;
- Precious metals;
- Rare non-ferrous metals;
- Light non-ferrous metals;
- Heavy non-ferrous metals.
This website uses this technique for classifying metals and their alloys in order to make it easier for users to find the information they need on our website.
There is also classification of metals of the following content:
- by main component (iron, aluminum, copper, magnesium, titanium and others);
- by the number of components contained (two, three and multi-component, by manufacturing technology);
- by density (light, heavy, high-density);
- by melting point (low-melting, refractory).
Another option classification of metals – light metals, heavy non-ferrous metals, noble metals, refractory, dispersed, radioactive and rare earth metals.
Use of metals
Use of metals In the modern world, metallurgy is a prerequisite for normal life. These materials are actively used in virtually every field of human activity. Among the most in demand are iron and copper, and their alloys. They have long been the first in production, and today approximately 98% of all metal structures are made of these metals. Aluminum, magnesium, and beryllium are also of great importance.
In the 20th century, they began to be used with particular scope in many areas of technology, electrical engineering, and structural metals. Nickel, cobalt, and manganese are also essential metals. Discovered less than 200 years ago, they are remarkable as alloying elements, imparting exceptional strength, wear resistance, and heat resistance. Refractory metals include 11 metals: platinum, tungsten, chromium, and others. Light metals include 16 metals, including sodium, lithium, cesium, and others. Noble metals, or "precious metals" as they are now called, include gold, silver, platinum, and the platinum group—eight metals in total. Rare earth metals include 17 metals.
Metals, brief description
Metals, brief description Elements that contain primarily basic, so-called "metallic properties" cannot, in fact, always be determined by the presence of all of them. Each element has different electrical conductivity, ductility, and magnetism. There are 94 types of elements classified as metals. They are simple chemical substances. They are extracted primarily from ores or in pure form (with some impurities); certain types, such as the isotope osmium-187, can only be obtained in laboratories.
