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Tungsten and Platinum – Comparison – Properties

This article contains comparison of key thermal and atomic properties of tungsten and platinum, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements. Tungsten vs Platinum.

tungsten and platinum - comparison

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Tugsten and Platinum – About Elements

Tungsten

Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Tungsten is an intrinsically brittle and hard material, making it difficult to work.

Platinum

Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Platinum is one of the least reactive metals. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry.

Tungsten in Periodic Table

Platinum in Periodic Table

Source: www.luciteria.com

Tungsten and Platinum – Applications

Tungsten

Tungsten is widely used metal. Approximately half of the tungsten is consumed for the production of hard materials – namely tungsten carbide – with the remaining major use being in alloys and steels. Mining and mineral processing demand wear-resistant machines and components, because the energies and masses of interacting bodies are significant. For this purposes, materials with the highest wear-resistance must be used. For example, tungsten carbide is used extensively in mining in top hammer rock drill bits, downhole hammers, roller-cutters, long wall plough chisels, long wall shearer picks, raiseboring reamers, and tunnel boring machines. The remaining 40% is generally used to make various alloys and specialty steels, electrodes, filaments, wires, as well as diverse components for electric, electronic, heating, lighting, and welding applications. High-speed steels are complex iron-base alloys of carbon, chromium, vanadium, molybdenum, or tungsten (as much as 18%), or combinations there of.

Platinum

Platinum is primarily an industrial metal. It is a critical material for many industries and is considered a strategic metal. Platinum is used as a catalyst, platinum is mostly found in vehicle catalytic converters that reduce toxic exhaust chemicals, and also in fuel cells to increase efficiency. The most common use of platinum is as a catalyst in chemical reactions, often as platinum black. In catalytic converters, platinum allows the complete combustion of low concentrations of unburned hydrocarbons from the exhaust into carbon dioxide and water vapor. Platinum has been used in thermocouple devices that measure temperature with high accuracy. Platinum is a component in magnetic coatings for high-density hard disk drives and some of the newer optical storage systems.

Tungsten and Platinum – Comparison in Table

Element Tungsten Platinum
Density 19.25 g/cm3 21.09 g/cm3
Ultimate Tensile Strength 980 MPa 150 MPa
Yield Strength 750 MPa 70 MPa
Young’s Modulus of Elasticity 411 GPa 168 GPa
Mohs Scale 7.5 3.5
Brinell Hardness 3000 MPa 400 MPa
Vickers Hardness 3500 MPa 550 MPa
Melting Point 3410 °C 1772 °C
Boiling Point 59300 °C 3827 °C
Thermal Conductivity 170 W/mK 72 W/mK
Thermal Expansion Coefficient 4.5 µm/mK 8.8 µm/mK
Specific Heat 0.13 J/g K 0.13 J/g K
Heat of Fusion 35.4 kJ/mol 19.6 kJ/mol
Heat of Vaporization 824 kJ/mol 510 kJ/mol