PROPERTIES OF ZINC

Chemical and Physical properties of Zinc

Description		Units of Measurement		Value
Symbol				Zn
Atomic Number				30
Crystalline Structure				Hexagonal
Atomic weight		uma		65,38
Specific weight		Kg/dm3		7.14
Specific liquid weight		Kg/dm3		6.62
Melting Point		°C		419
Boiling Point		°C		904
Specific Heat		J/g K		0.388
Melting Heat		KJ/mol		7.322
Vaporisation Heat		KJ/mol		115.30
Electrical Conductivity		µΏcm2/cm		6
Thermal Conductivity		W/cmk		1.16
Coefficient of Thermal Expansion		10-6°/C		39.7
Modulus of Elasticity		N/mm2		90.000

 

Primary Zinc: UNI EN 1179 Norm
Composition in percentage

Type Classification		Zinc Nominal Content		1 Pb max		1 Cd max		1 Fe max		1 Sn max		1 Cu max		1 Al max		total # of elements 1-6 max
Z1		99.995		0.003		0.003		0.002		0.001		0.001		0.001		0.005
Z2		99.990		0.005		0.005		0.003		0.001		0.002		-		0.010
Z3		99.950		0.030		0.020		0.020		0.001		0.002		-		0.050
Z4		99.500		0.450		0.050		0.050		-		-		-		0.500
Z5		98.500		1.400		0.050		0.050		-		-		-		1.500