Osmium (Os) is a dense refractory metal belonging to the platinum group metals, characterized by exceptional hardness and resistance to corrosion and oxidation at elevated temperatures. It is employed in specialized high-performance applications where extreme durability and chemical inertness are critical, including electrical contacts in demanding environments, fountain pen nibs, and as a catalyst in chemical processing. Engineers select osmium when standard metals prove inadequate due to wear, corrosion, or thermal constraints, though its scarcity, cost, and brittleness typically limit its use to small components or alloy additions rather than bulk structural applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 401.3 | GPa | — | ||
| ↳ | 386.8 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.01844 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.2347 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)2 entries | 258.7 | GPa | — | ||
| ↳ | 243.1 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 21.71 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 0.1500 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | 0.1348 | eV/atom | — |