This article contains comparison of key thermal and atomic properties of manganese and zinc, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements. Manganese vs Zinc.
Manganese and Zinc – About Elements
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Manganese and Zinc – Applications
Manganese
Manganese is an important alloying agent. Almost 90% of the manganese produced annually is used in the production of steel. In steels, manganese improves the rolling and forging qualities, as well as strength, toughness, stiffness, wear resistance, hardness and hardenability. The second largest application for manganese is in aluminium alloys. Aluminium with roughly 1.5% manganese has increased resistance to corrosion through grains that absorb impurities which would lead to galvanic corrosion. Manganese can be formed into many useful compounds. For example, manganese oxide, which can be used in fertilizers and ceramics.
Zinc
Corrosion-resistant zinc plating of iron (hot-dip galvanizing) is the major application for zinc. Coating of steel constitutes the largest single use of zinc, but it is used in large tonnages in zinc alloy castings, as zinc dust and oxide, and in wrought zinc products. Galvanized steel is just plain carbon steel that has been coated with a thin zinc layer. The zinc protects iron by corroding first, but zinc corrodes at much lower rates than do steel. Other applications are in electrical batteries, small non-structural castings, and alloys such as brass. A variety of zinc compounds are commonly used, such as zinc carbonate and zinc gluconate (as dietary supplements), zinc chloride (in deodorants), zinc pyrithione (anti-dandruff shampoos), zinc sulfide (in luminescent paints), and dimethylzinc or diethylzinc in the organic laboratory. A key part of the modern materials world in which zinc finds itself is recycling. Zinc, in common with all metals (and unlike synthetic materials) can be recycled indefinitely without degradation.
Manganese and Zinc – Comparison in Table
Element | Manganese | Zinc |
Density | 7.47 g/cm3 | 7.14 g/cm3 |
Ultimate Tensile Strength | 650 MPa | 90 MPa |
Yield Strength | 230 MPa | 75 MPa |
Young’s Modulus of Elasticity | 198 GPa | 108 GPa |
Mohs Scale | 6 | 2.5 |
Brinell Hardness | 200 MPa | 330 MPa |
Vickers Hardness | N/A | N/A |
Melting Point | 1246 °C | 419.53 °C |
Boiling Point | 2061 °C | 907 °C |
Thermal Conductivity | 7.82 W/mK | 116 W/mK |
Thermal Expansion Coefficient | 21.7 µm/mK | 30.2 µm/mK |
Specific Heat | 0.48 J/g K | 0.39 J/g K |
Heat of Fusion | 12.05 kJ/mol | 7.322 kJ/mol |
Heat of Vaporization | 266 kJ/mol | 115.3 kJ/mol |