Nb5Si3B

metal

· JVASP-62107· Nb5Si3B

Nb5Si3B is an experimental intermetallic compound combining niobium, silicon, and boron, belonging to the family of advanced refractory metal silicides being developed for ultra-high-temperature structural applications. This material is primarily of research interest for aerospace and power generation sectors seeking to extend operating temperatures beyond conventional superalloys, with potential applications in engine hot sections and thermal protection systems where its refractory character and low density relative to density-normalized strength offer advantages over nickel-based alternatives.

aerospace engine componentshigh-temperature structural applicationsturbine blade developmentthermal protection systemsrefractory intermetallics researchadvanced propulsion systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2458	lb/in³	—

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	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00570	eV/atom	—
Formation Energy(ΔHf)	-0.6157	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.

Nb5Si3B

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control