Density, specific heat, melting point of zinc.

Mechanical and physical properties of zinc alloys
Density, specific heat, melting point of zinc.
Zinc applications
Machining, rolling and deforming zinc
Annealing, hardening and heat treatment of zinc
Zinc alloys

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General characteristics of zinc

Zinc is a metal with a silvery dull color that exists in nature in the form of 12 stable natural isotopes, whose mass numbers range from 62 to 73. The crystal lattice is hexagonal, densely packed. The metal is diamagnetic, it does not undergo polymorphic transformations. Zinc has a more negative electrode potential in the electrochemical activity series. This property is used for effective protection of steel structures and parts against atmospheric corrosion, in particular by means of hot or cold galvanizing. Zinc is a brittle metal and practically does not deform under normal conditions.

Zinc grades according to GOST 3640-94

Mass fraction, %
Zn impurities
Pb Cd Fe Cu Sn As Al total
not less than not less
TSV00 99,997 0,00001 0,002 0,00001 0,00001 0,00001 0,0005 0,00001 0,003
CV0 99,995 0,003 0,002 0,0020 0,0010 0,001 0,0005 0,005 0,005
DV 99,99 0,005 0,002 0,003 0,0010 0,001 0,0005 0,005 0,01
TS0A 99,98 0,01 0,003 0,003 0,0010 0,001 0,0005 0,005 0,02
Ц0 99,975 0,013 0,004 0,005 0,0010 0,001 0,0005 0,005 0,025
Ц1 99,95 0,02 0,01 0,01 0,002 0,001 0,0005 0,005 0,05
Ц2 98,7 1,0 0,2 0,05 0,005 0,002 0,01 0,01* 1,3
Ц3 97,5 2,0 0,2 0,1 0,05 0,005 0,01 - 2,5

* - In zinc used for rolling, mass fraction of Al must be not more than 0.005%.

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Physical and mechanical properties of zinc at 20°C

Value Value
Density, g/cm3 7,1...7,2;
Melting point, °С 419,4
Melt heat, kJ/kg 100,8;
Surface tension at 450 °C, N/m2 0,755
Heat capacity in solid state, J/(kg.K) 394
Thermal conductivity in solid state, W/(m.K) 111
Specific conductivity, MSm/m 15,9
Specific electrical resistance, μOmm 0,059
Coefficient of linear expansion in the temperature range 20...200°C, К-1 29,810-6
Temperature coefficient of heat conductivity, К-1 0,5-10-3
Modulus of normal elasticity, GPa 78,5...127,5
Shear modulus, GPa 37,3

Buy. Supplier, price

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