Osmium

We are specialists in semi-finished steel and metal products, as well as standard parts. We have a wide range of products in our large warehouse located in Europe which is constantly growing and is designed according to high quality standards.

We sell all over Europe, osmium and other refractory metals. We ship within 24 hours for whole Europe. Fast and uncomplicated deliveries.

We sell countless flat, round and square steels and precision tools with various dimensions and profiles.

Purchase refractory metals such as rhenium, molybdenum, copper, brass, bronze, aluminum, osmium, ruthenium, iridium, rhodium, palladium, tantalum, titanium, platinum, nickel alloys, pure tungsten, niobium, silver and composite metals and gold.

We work together with more than 10,000 clients from the mechanical engineering, tool manufacturing, mold manufacturing, cabinet construction, factory building and metal structures industries.

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Osmium

This compound spontaneously forms when the pure osmium is in contact with air, and is both volatile and extremely toxic, therefore pure metal is rarely used. The osmium is the most densely occurring natural element and confers hardness when used in metal alloys. The alloys containing the osmium are hard and are used in many contexts, especially where there is resistance to wear caused by friction when there is frequent operation.

Description:

Symbol: Os

Atomic number: 76

Atomic weight: 190.23

Element Category: transition metal

Group, period, block: 8, 6, d

Color: bluish gray / bluish-white

Other names: Osmio

Physical properties

Melting point: 3033, 5491, 3306 K

Boiling point: 5012, 9054, 5285 K

Density: 22.59 g · cm 3

Bulk Density: 20 g · cm 3

Density @ 20 ° C: 22.61 g / cm 3

Solid density: 22610 kg · m 3

Specific heat: 0.13 (kJ / kg K)

Temperature Superconductivity: 0.66 [or -272.49 ° C (-458.48 ° F)] K

Heat of Melting (kJ · mol -1): 29.3

Heat of Vaporization (kJ · mol -1): 738.06

Heat of Atomization (kJ · mol -1): 791

Thermal conductivity: 87.6 W · m -1 · K -1

Thermal expansion: (25 ° C) 5.1 μm · m -1 · K -1

Electrical resistivity: (0 ° C) 81.2 n · m

Molar heat capacity: 24.7 J · mol -1 · K -1

Shear modulus: 222 GPa

Bulk module: 462 GPa

Poisson ratio: 0.25

Hardness of Mohs: 7

Vickers hardness: 3920 MPa

Sound velocity: (20 ° C) 4940 m · s -1

Pauling's electronegativity: 2.2

Allred Rochow Electronegativity: 1.52

Pauling Electropositivity: 1.8

Chemical properties

Electrons: 76

Protões: 76

Neutron: 114

Electronic configuration: [Xe] 4f 14 5d 6 6s 2

Atomic radius:

Atomic radius, unbound (Å): 2.16

Covalent Radius: 144 ± 16:00

Covalent Ray (Å): 1.36

Van der Waals radius: 216 pm

Oxidation states: 8, 7, 6, 5, 4, 3, 2, 1, 0, -1, -2 (slightly acidic oxide)

Solid state

Crystal structure: hexagonal closed

Magnetic ordering: paramagnetic

Electronic affinity (kJ · mol -1) 106,096

1st ionization energy: 840 kJ · mol -1

2nd ionization energy: 1600 kJ · mol -1