Metal materials are usually divided into three categories: ferrous metals, non-ferrous metals and special metal materials. The following are the specific contents of each category:
1. Ferrous metals
Ferrous metals mainly refer to iron and its alloys, including the following types:
Industrial pure iron: iron content is more than 90%.
Cast iron: carbon content is between 2% and 4%, with good fluidity and wear resistance, commonly used in construction, bridges and household items.
Carbon steel: carbon content is less than 2%, according to the carbon content is divided into low carbon steel, medium carbon steel and high carbon steel, widely used in construction, machinery and automobile fields.
Alloy steel: manganese, chromium, nickel and other elements are added to carbon steel to improve strength, hardness and corrosion resistance, used for high-performance mechanical parts and structural parts in special environments.
2. Non-ferrous metals
Non-ferrous metals refer to metals and their alloys other than iron, chromium and manganese. Common ones are:
Aluminum and aluminum alloys: lightweight, corrosion-resistant, widely used in aerospace, automobile manufacturing and electronic products.
Copper and copper alloys: Excellent electrical and thermal conductivity, often used in electrical circuits and heat exchangers.
Magnesium and magnesium alloys: Low density, high specific strength, suitable for aerospace and laptop casings.
Titanium and titanium alloys: High strength, light weight and good biocompatibility, used in aviation and medical implants.
Zinc and zinc alloys: Strong corrosion resistance, often used in steel surface coating and electronic product components.
3. Special metal materials
Special metal materials have special functions, including:
Amorphous metal materials: Obtained through a rapid condensation process, with unique physical and chemical properties.
Functional alloys: Such as shape memory alloys, superconducting alloys, wear-resistant alloys, etc., used in aerospace, medical devices and special industrial fields.
Metal matrix composites: Combine metals with other materials to enhance specific properties, such as strength, heat resistance or conductivity.
Summary: There are many types of metal materials, including ferrous metals, non-ferrous metals and special metal materials. Each type of material plays an important role in different fields due to its unique properties.
