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What is metal material?

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What is metal material?

  Metal material refers to the material with luster, ductility, easy to conduct electricity, heat transfer and other properties. It is generally divided into ferrous metals and nonferrous metals. Ferrous metals include iron, chromium, manganese, etc. Among them, steel is the basic structural material, known as The skeleton of industry Due to the progress of science and technology, a variety of new chemical materials and new non-metallic materials are widely used, so that the substitute of steel is increasing, and the demand for steel is relatively decreased. But up to now, the dominant position of steel in industrial raw material composition is still difficult to replace

It is usually divided into non-ferrous materials and ferrous metals.

Also known as iron and steel impurities, including ferrous metal content <0.2% And the carbon content does not exceed 0.0218% Industrial pure iron, containing carbon 0.0218%~2.11% Steel with carbon content greater than 2.11% Cast iron. Generally speaking, ferrous metals also include chromium, manganese and their alloys.

Nonferrous Metals refer to all metals and their alloys except iron, chromium and manganese, which are usually divided into light metals, heavy metals, precious metals, semi metals, rare metals and rare earth metals. The strength and hardness of non-ferrous alloys are generally higher than that of pure metals, and the resistance temperature coefficient is small.

Special metal materials include structural metal materials and functional metal materials for different purposes. Among them, there are amorphous metal materials obtained by rapid condensation process, as well as quasicrystal, microcrystalline and nanocrystalline metal materials; there are also special functional alloys such as stealth, hydrogen resistance, superconductivity, shape memory, wear resistance, vibration damping and other special functional alloys, as well as metal matrix composites.

Classification by chemical composition

It can be divided into carbon steel, low alloy steel and alloy steel.

Classification by main quality level

①  Common carbon steel, high quality carbon steel and special quality carbon steel;

②  Common low alloy steel, high quality low alloy steel and special quality low alloy steel;

③  General alloy steel, high quality alloy steel and special quality alloy steel.


According to the national standard "representation method of iron and steel product brand", the combination of Chinese phonetic alphabet, chemical symbol and Arabic numerals is adopted for steel product brand in China

)The chemical elements in the brand are expressed by international chemical elements.

)The product name, use, characteristics and process method are usually represented by the abbreviation of Chinese Pinyin which represents the Chinese characters of the product.

)Content of main chemical elements in iron and steel products( % )In Arabic numerals.

The grade of alloy structural steel is prepared according to the following rules. The number represents the average carbon content. The carbon content of alloy structural steel and spring steel is expressed by two digit number, and carbon content of stainless acid resistant steel and heat-resistant steel is expressed by thousands. Average carbon content < 0.1% (with “0”  Average carbon content 1.00 % The carbon content is not standardized, otherwise it is expressed in thousands. Marking and marking for ball bearings, carbon steel, high speed steel “C”  Average alloy content <1.5 % Only the element symbol is marked in the brand, and the content is not noted.

Metal products industry includes structural metal products manufacturing, metal tool manufacturing, container and metal packaging container manufacturing, stainless steel and similar daily metal products manufacturing, shipbuilding and marine engineering manufacturing, etc. With the development of science and technology, more and more metal products are used in various fields of society and society.

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