Business / Machine Shop / Manganese: A gray-white nonmagnetic metallic element resembling iron, except it is harder and more brittle. Manganese can be alloyed with iron, copper and nickel, for commercial alloys. In steel it increases hardness, strength, wear resistance and other properties. Manganese is also added to magnesium-aluminum alloys to improve corrosion resistance.
Science / Geology / Manganese Nodule: A rounded concretion, rich in manganese minerals with minor concentrations of cobalt, copper and nickel. These occur in abundance on some parts of the deep ocean floor and have been considered as a po MORE
Science / Periodic Table of Elements / Manganese (Mn): Atomic number: 25, Atomic mass: 54.9380 g.mol -1, Electronegativity: 1.5, Density: 7.43 g.cm-3 at 20°C, Melting point: 1247 °C, Boiling point: 2061 °C, Vanderwaals radius: 0.126 nm, Ionic radius: 0 MORE