IrW
metal· IrW
IrW is a refractory metal alloy combining iridium and tungsten, two of the densest and highest-melting-point elements in the periodic table. This material is engineered for extreme-environment applications where both thermal stability and mechanical integrity must be maintained at temperatures and stresses that would degrade conventional superalloys. IrW is used primarily in aerospace, nuclear, and precision instrumentation sectors where weight is secondary to reliability and performance at the limits of material science—such as in rocket nozzles, nuclear reactor components, and specialized laboratory instruments.
rocket engine nozzlesnuclear reactor componentshigh-temperature aerospace structuresextreme-environment instrumentationrefractory applications above 2000°Cprecision gravitational sensing devices
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 334.2 | GPa | — | ||
| ↳ | 334.2 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.1126 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν) | 0.2686 | - | — | ||
Shear Modulus(G)2 entries | 182.8 | GPa | — | ||
| ↳ | 182.8 | GPa | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 20.41 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 4.530 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.2218 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.1990 | eV/atom | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.