Zinc Metal Properties

Physical and Mechanical Properties

Tensile Strength
(cast) 28 MN/m2 (4,000 psi)
(rolled, with grain) 126 MN/m2 (18,000 psi)
246 MN/m2 (35,000 psi)
Elongation (rolled, with grain)
(99.95% zinc soft temper) 65%
(98.0% zinc hard temper) 5%
Modulus of elasticity 7 x 104 MN/m2 (1 x 107 psi)
Brinell hardness, 500 kg load for 30 sec. 30
Impact resistance
(pressed zinc, elongation = 30%) 6.5-9 J/cm2 (26-35 ft-lbs/in2)
Surface tension, liquid (4500C) 0.755 N/m
Surface tension, liquid (419.50C) 0.782 N/m
Viscosity, liquid (419.50C) 0.00385 N/m
Coefficient of friction (rolled zinc vs rolled zinc) 0.21
Desnity See chart below
Hardness 2.5 mohs
Surface Reflectivity See chart below

 

 

Thermal Properties

Thermal
Melting point 419.5C (787.1F)
Boiling point (760 mm Hg) 907C (1664.6F)
Combustion temperature 1800C (approx, 3272F)
Vapor pressure (419.5C) 1.39 x 10-1 mm Hg
Thermal Conductivity
solid (18C) 113 W/m.K
solid (410.5C) 96 W/m.K
liquid (419.5C) 164 W/m.K
liquid (750C) 57 W/m.K
Linear coefficient of thermal expansion
(single crystal along a axis 0-100C) 15 mm/ m.K
(single crystal along c axis 0-100C) 61 mm/ m.K
(polycrystalline 20-250C) 61 mm/ m.K
Volume coefficient of thermal expansion
(20-400C) 0.89 x 10-6/K
(120-360C) 0.85 x 10-6/K
Contraction on freezing at 419.5C 4.48%
Volume change on freezing 46 C -> 0C 7.28%
Specific heat (20C) 0.382 kJ/kg.K
Latent heat of fusion (419.5C) 100.9 kJ/kg
Latent heat of vaporization (906C) 1.782 MJ/kg
Heat capacity
solid Cp = 22.40 +10.5 x 10-3 Tjmol-1 (298-692.7 K)
liquid Cp = 31.40 Jmol-1
gas Cp = 20.80 Jmol-1

 

Other Uses of Zinc