MANGANESE METAL

Brief introduction

It is also an important alloying element used in the manufacture of stainless steels, high-strength low alloy steels (HSLA), aluminium-manganese alloys and copper-manganese alloys. Manganese metal can be produced industrially and almost all of it is used in the steel industry to make ferromanganese alloys. Manganese ferroalloys can be obtained by reducing the appropriate proportions of iron oxide (Fe₂O₃) and manganese dioxide (MnO₂) with carbon (graphite) in a blast furnace. Pure manganese metal can be produced by electrolysis of manganese sulphate (MnSO₄).

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Manganese, a chemical element, element symbol Mn, atomic number 25, relative atomic mass 54.9380, elemental is an off-white, hard brittle, shiny transition metal. The relative density is 7.21 g/cm³ (a, 20 °C). The melting point is 1244 °C, and the boiling point is 2095 °C. Resistivity 185x10⁻⁸Ω·m (25°C).

Manganese is mainly used in the steel industry for desulfurization and deoxidation of steel; It is also used as an alloy additive to improve the strength, hardness, elastic limit, wear resistance and corrosion resistance of steel; In high-alloy steel, it is also used as an austenitic compound element for refining stainless steel, special alloy steel, stainless steel welding rods, etc. In addition, it is also used in non-ferrous metals, chemicals, pharmaceuticals, food, analysis and scientific research. Manganese is widely used in automotive batteries, high-end equipment manufacturing, new materials and other fields.

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Manganese is widely used in automotive batteries, high-end equipment manufacturing, new materials and other fields, and an average of 4.5 kg of manganese is required for each electric vehicle.

Manganese is used in the production of a variety of important alloys, and in the steel industry, manganese can improve the quality, strength, toughness, stiffness, wear resistance, hardness, and quenchability of rollers and castings. Manganese can be combined with aluminum and antimony, especially with small amounts of copper to form a high-iron magnetic alloy.

In the fan-shaped hall, which is 76 meters long and 138 meters wide, there is not a single pillar in the middle. Due to the use of manganese steel as the structural material, it is very strong, and the material is less than other steels, with an average of only 45 kg of manganese steel per square meter of roof.

Manganese steel is used in large quantities to make steel mills, ball bearings, buckets of bulldozers and excavators, and other components that are often abrased, as well as iron-manganese rails, bridges, etc. The roof of the audience hall of Shanghai's newly built Cultural Square adopts a novel grid structure, welded with thousands of manganese steel pipes.

MANGANESE METAL

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