H4C
ceramic· JVASP-32150· H4C
H4C is a ceramic compound with a hydrogen-carbon composition, likely representing a hydrocarbon-derived or carbon-hydride ceramic material. This class of materials is primarily of research interest for lightweight structural and thermal applications, as the low density combined with ceramic hardness makes it potentially valuable in aerospace and advanced composites development. While not yet widespread in industrial production, hydrogen-carbon ceramics are being explored as precursors to high-performance carbon-ceramic composites and as intermediates in ceramic matrix composite (CMC) manufacturing.
aerospace compositeslightweight structural ceramicsthermal protection systemsceramic matrix composites (CMC)materials research and developmenthigh-temperature insulation
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 4.430 | GPa | — | ||
Poisson's Ratio(ν) | 0.3800 | - | — | ||
Shear Modulus(G) | 3.020 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 572 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 7.891 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 1.916 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.07783 | C/m² | — | ||
Seebeck Coefficient(S) | -157.1 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.2110 | 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.