ScIr3

ceramic

· ScIr3

ScIr3 is a ternary intermetallic ceramic compound combining scandium and iridium, belonging to the family of refractory intermetallics studied for high-temperature structural applications. This material exhibits significant elastic stiffness and density, making it a candidate for extreme-environment engineering where conventional ceramics or superalloys reach performance limits. ScIr3 remains primarily a research-phase compound; its appeal lies in the potential for high-temperature strength and chemical stability offered by iridium-based intermetallics, though industrial adoption has been limited by processing challenges and cost factors compared to established alternatives like nickel-based superalloys or yttria-stabilized zirconia.

high-temperature structural componentsaerospace propulsion researchrefractory coatings and compositesextreme environment testingthermal barrier applicationsmaterials research and prototyping

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	35,194.2	ksi	DFT
↳	36,191.3	ksi	DFT · OptB88vdW
↳	35,194.2	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	1.265	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3000	-	DFT · OptB88vdW
↳	0.3014	-	DFT · PBE
Shear Modulus(G)3 entries	16,110.2	ksi	DFT
↳	18,486.5	ksi	DFT · OptB88vdW
↳	16,110.2	ksi	DFT · PBE

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.6063	lb/in³	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01630	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6803	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

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.

ScIr3 — Properties & Data | MatWorld

ScIr3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental