What are the commonly used metal materials? What are the main properties?

Metal materials in our daily life can be seen almost everywhere, if there is no metal materials, our life will not have so many solid buildings as well as furniture. The types of metal materials are more, in addition to the more familiar iron and copper in fact, there are many, then, how to categorize the metal materials? What are the characteristics of the various classifications? What are the commonly used metal materials? What are the main properties of metal materials? Now I give you one by one to answer.

What are the commonly used metal materials?

Metallic materials are made of metal elements or metal elements as the main material composition, and has the characteristics of metal engineering materials. Metallic materials are usually divided into two categories: ferrous metals and non-ferrous metals. Iron or to it as the main material and formed, known as ferrous metals, such as steel and pig iron; in addition to ferrous metals other than other metals, are known as non-ferrous metals, such as copper, aluminum, magnesium, titanium, tin, lead and so on.

Metallic materials of each classification characteristics

Metallic materials are usually divided into ferrous metals, non-ferrous metals and special metal materials.

①Ferrous metals, also known as iron and steel materials, including industrial iron containing more than 90% of iron, cast iron containing carbon ?2% to 4%, carbon steel containing less than ?2% of carbon, as well as a variety of uses of structural steel, stainless steel, heat-resistant steel, high-temperature alloys, precision alloys and so on. Broadly speaking, ferrous metals also include chromium, manganese and their alloys.

② non-ferrous metals is in addition to iron, chromium, manganese, all metals and their alloys, usually divided into light metals, heavy metals, precious metals, semi-metals, rare metals and rare earth metals, etc., non-ferrous alloys are generally higher than the strength and hardness of the pure metal, and resistance, resistance temperature coefficient is small.

③Specialty metal materials include structural metal materials and functional metal materials for different purposes. Among them are amorphous metal materials obtained through rapid condensation process, as well as quasi-crystalline, microcrystalline, nanocrystalline metal materials, etc.; there are also stealth, hydrogen resistance, superconductivity, shape memory, wear-resistant, vibration damping, and other special functional alloys, as well as metal matrix composite materials.

What are the main properties of metallic materials?

The properties of metallic materials can be generally categorized into two main groups: use properties and process properties.

The use of performance refers to the material in the working conditions must have the performance, which includes physical properties, chemical properties and mechanical properties.

Physical properties refers to metal materials in a variety of physical conditions under the performance. Including: density, melting point, thermal conductivity, electrical conductivity, thermal expansion and magnetic properties.

Chemical properties refers to the metal at room temperature or high temperature conditions to resist the chemical attack of external media. Including: corrosion resistance and oxidation resistance.

Mechanical properties is the most important use of metal materials, the so-called mechanical properties of metals refers to the metal in the mechanical action of the elastic and inelastic response related to or involving stress-strain relationship between the performance. It includes: strength, plasticity, hardness, toughness and fatigue strength.

The process performance of metal materials directly affects the quality of parts processed, is the selection of materials and development of parts processing technology route must be considered as one of the factors. It includes casting performance, pressure processing performance, welding performance, cutting performance and heat treatment performance.

Above, I gave you an introduction to the commonly used metal materials? What are the characteristics of each classification of metal materials and the main properties of metal materials? I believe that you have a more in-depth understanding of the various properties of metal materials classification and function. In fact, different metals are with different characteristics, due to their different characteristics, different metal materials are also used in different places, consumers should first understand the use of the use of the use of the conditions required to choose the type of metal.