ANTIMONY
Antimony, a silvery-white metal, is brittle with a large crystalline structure which make it somewhat difficult to work with. It can be cast to form rod but is too brittle to effectively form wire of small diameter. Its unmalleability make it unsuitable for rolling to form sheet or foil. Sheet could possibly be cast, but care must be taken as melting antimony releases toxic fumes. Antimony is mostly used in alloying other metals such as lead and tin, and as a trace element in copper-base alloys. In its high purity form it is used in the electronics and semiconductor industries.
Typical Properties:
Melting Point: 630.7 oC
Boiling Point: 1587 oC
Density: 6.697 gm/cm3
Atomic Weight: 121.75
Crystal Structure: Hexagonal (rhombohedral equivalent); a = 0.4307 nm, c = 1.1273 nm
Coefficient of Linear Expansion: 8 to 11 um/m⋅ K at 0 oC
Specific Heat: 0.207 kJ/kg⋅ K at 25 oC
Latent Heat of Fusion: 163.17 kJ/kg
Latent Heat of Vaporization: 1602 kJ/kg
Thermal Conductivity: 25.9 W/m⋅ K
Electrical Resistivity: 370 nΩ ⋅ m at 0 oC
Magnetic Susceptibility: Volume: -10.2 x 10-6 mks
Spectral Reflectance: 70% for λ = 58.9 µm
Tensile Strength: 11.40 MPa
Hardness: 30 - 58 HB
Elastic Modulus: Tension - 77.759 GPa, Shear - 19 GPa
Resistance to Specific Corroding Agents:
Corroding Agent Resistance
Air Moderate general attack when air is moist and light is present
Alkalis and alkali salts General attack
Ammonia Resistant
Aqua Regia Severe general attack
Carbon Dioxide Resistant
Hydrochloric Acid Moderate attack in presence of air
Hydrofluoric Acid Resistant
Nitric Acid Severe general attack
Sulfuric Acid Severe general attack by warm concentrated acid; resistant to cold or dilute acid