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MANGANESE (25Mn54.93805)

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A lustrous, steel-gray metal, manganese resembles iron, but is harder and very brittle. In its pure form, it is too brittle to fabricate. Manganese is chemically reactive and decomposes slowly in cold water, more rapidly when heated. While pure manganese metal is ferromagnetic only after special treatment, it forms highly ferromagnetic alloys when combined with aluminum and antimony or copper. In steel, manganese greatly improves strength, wear resistance, hardness, and many other qualities.

Property Name Property Value Property Name Property Value
Atomic Code (25Mn54.93805) Atomic Volume 7.39W/D
CAS # 7439-96-5 First Ionization Energy 171K-cal/g-mole
Electronegativity 1.5Pauling's
Melting Point 1246°C Covalent Radius 1.17Angstroms
Boiling Point 2095°C Mohs Hardness @ 20°C 5.0
Density 7.8g/cm3 Linear Coefficient of Expansion 22x10-6K-1
Specific Heat @ 25°C 0.115cal/g°C Crystal Structure Cubic
Latent Heat of Fusion 3.50cal/g Magnetic Susceptibility 8x10-6cgs
Latent Heat of Vaporization 537k-cal/g-atom Standard Electrode Potential +1.134volts


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