Hf2CoIr — Properties & Data | MatWorld

Hf2CoIr

metal

· JVASP-41131· Hf2CoIr

Hf2CoIr is a ternary refractory metal intermetallic compound combining hafnium, cobalt, and iridium. This material belongs to the family of high-entropy and multi-principal-element alloys being investigated for extreme-temperature applications where conventional superalloys approach their limits. While primarily in research and development phases, Hf2CoIr and similar compositions are explored for their potential to maintain strength and oxidation resistance in aerospace and power-generation environments exceeding 1200°C, where the combination of refractory elements offers thermal stability advantages over traditional nickel- or cobalt-based superalloys.

High-temperature aerospace componentsGas turbine blades and shroudsHypersonic vehicle structuresAdvanced heat-shield systemsResearch and development materialsNext-generation engine materials

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	28,296.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4300	-	DFT · OptB88vdW
Shear Modulus(G)	5,656.5	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.5474	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.6900	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00293	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00298	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-24.30	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-24.57	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01930	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.7117	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

Hf2CoIr

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control