Manganese, a chemical element with the symbol Mn and atomic number 25, is a grayish-white, hard, brittle, lustrous transition metal. Pure metallic manganese is a slightly softer metal than iron, while manganese with a few impurities is hard and brittle and oxidizes when wet. Manganese is widely found in nature. Soil contains 0.25% manganese, while tea, wheat and hard-shelled fruits contain more manganese. Manganese exposure occurs in operations such as stone crushing, mining, welding, production of dry cell batteries, and the dye industry.

Metal Element Analysis

Manganese (Mn)

1, in the low content range, has a great strengthening effect on steel, improve strength, hardness and wear resistance.

2、Reduce the critical cooling rate of steel, improve the hardenability of steel.

3, slightly improve the low temperature toughness of steel.

4、It is used as the main austenitizing element in the high content range.

5、Manganese has a significant effect on improving the strength of low-carbon and medium-carbon pearlite steels.

6, Manganese has improved the high temperature transient strength of steel.

The main disadvantages of manganese steel are: ① high manganese content, there is more obvious tempering brittleness phenomenon; ② manganese has to promote the role of grain growth, so manganese steel is more sensitive to overheating t in the heat treatment process must be noted. This shortcoming can be used to add grain refining elements such as molybdenum, vanadium, titanium, etc. to overcome; ③ when the mass fraction of manganese more than 1%, will make the steel welding performance worse; ④ manganese will make the steel corrosion resistance is reduced.

Role in Metals

Manganese is an important metallic element that is widely used in a variety of industries. In the field of metal fabrication, manganese serves to enhance the hardness and corrosion resistance of metals. Manganese also improves the physical and mechanical properties of steel and can make steel tougher and more durable. In the manufacture of aluminum alloys, manganese can play a role in regulating the alloy composition and improving the strength and hardness of aluminum alloys. In addition, manganese can be used in batteries, electronic components, chemicals and medical applications. In conclusion, the role of manganese in metals is not only to simply increase the hardness, but also to have an important effect on the physical and mechanical properties of the material.