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Antimony and Lead – Comparison – Properties

This article contains comparison of key thermal and atomic properties of antimony and lead, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements. Antimony vs Lead.

antimony and lead - comparison

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Antimony and Lead – About Elements


Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl.


Lead is a heavy metal that is denser than most common materials. Lead is soft and malleable, and has a relatively low melting point. Lead is widely used as a gamma shield. Major advantage of lead shield is in its compactness due to its higher density. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements.

Antimony in Periodic Table

Lead in Periodic Table

Source: www.luciteria.com

Antimony and Lead – Applications


The largest applications for metallic antimony are an alloy with lead and tin and the lead antimony plates in lead–acid batteries. Alloys of lead and tin with antimony have improved properties for solders, bullets, and plain bearings. Antimony can be used in fire retardants for many commercial and domestic products. Antimony trichloride is used in the manufacturing flame-proofing compounds as well as paints, ceramic enamels, glass and pottery. Other uses include ball bearings and mixing with alloys with percentages ranging from 1 to 20 greatly increasing the hardness and mechanical strength of the lead. The capability to strengthen already strong alloys is its largest and most widespread use.


Lead metal has several useful mechanical properties, including high density, low melting point, ductility, and relative inertness. Lead is widely used for car batteries, pigments, ammunition, cable sheathing, weights for lifting, weight belts for diving, lead crystal glass, radiation protection and in some solders. The largest use of lead in the early 21st century is in lead–acid batteries. The lead in batteries undergoes no direct contact with humans, so there are fewer toxicity concerns. Lead is used in high voltage power cables as sheathing material to prevent water diffusion into insulation; this use is decreasing as lead is being phased out. A lead is widely used as a gamma shield. Major advantage of lead shield is in its compactness due to its higher density. On the other hand depleted uranium is much more effective due to its higher Z. Depleted uranium is used for shielding in portable gamma ray sources.

Antimony and Lead – Comparison in Table

Element Antimony Lead
Density 6.697 g/cm3 11.34 g/cm3
Ultimate Tensile Strength 11 MPa 17 MPa
Yield Strength N/A 5.5 MPa
Young’s Modulus of Elasticity 55 GPa 16 GPa
Mohs Scale 3.15 1.5
Brinell Hardness 300 MPa 38 MPa
Vickers Hardness N/A N/A
Melting Point 631 °C 327.5 °C
Boiling Point 1950 °C 1740 °C
Thermal Conductivity 24 W/mK 35 W/mK
Thermal Expansion Coefficient 11 µm/mK 28.9 µm/mK
Specific Heat 0.21 J/g K 0.13 J/g K
Heat of Fusion 19.87 kJ/mol 4.799 kJ/mol
Heat of Vaporization 77.14 kJ/mol 177.7 kJ/mol