Hf2Al4C5
metal· Hf2Al4C5
Hf2Al4C5 is a hafnium-aluminum carbide ceramic composite that belongs to the MAX phase or similar ternary carbide family, combining metallic and ceramic characteristics. This material is primarily of research interest for high-temperature structural applications, particularly in aerospace and thermal management systems where excellent stiffness and chemical stability are required at elevated temperatures. Engineers select hafnium carbides over conventional refractories or superalloys when combining light weight with exceptional hardness and thermal resistance is critical, though commercial availability remains limited to specialized research suppliers.
high-temperature aerospace componentsthermal protection systemsrefractory coatingsstructural ceramics researchadvanced propulsion materialswear-resistant cladding
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 27,422.9 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.05188 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν) | 0.2162 | - | — | ||
Shear Modulus(G) | 19,195.7 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2406 | 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) | 0.00720 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.5391 | 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.