HfB4Ir3

ceramic
· HfB4Ir3

HfB4Ir3 is an experimental hafnium–iridium boride ceramic compound combining the refractory properties of hafnium boride with iridium's high-temperature strength and oxidation resistance. This material exists primarily in research contexts as part of the ultra-high-temperature ceramic (UHTC) family, where it is being investigated for extreme thermal and mechanical environments that exceed the capabilities of conventional aerospace ceramics. Engineers would consider this compound for applications demanding exceptional performance at very high temperatures combined with chemical stability, though it remains a developmental material with limited commercial availability compared to established alternatives like hafnium carbide or zirconium diboride.

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Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Density(ρ)
14.85
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
0.000
eV—
↳
0.000
eV—
Seebeck Coefficient(S)
1.637
µV/K—
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
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.000
eV/atom—
Formation Energy(ΔHf)
-0.4913
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

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.