H4C — Properties & Data | MatWorld

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	642.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3800	-	DFT · OptB88vdW
Shear Modulus(G)	438	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.02066	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	7.891	eV	DFT · OptB88vdW
↳	11.98	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	1.916	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.033	-	DFT · OptB88vdW
↳	1.653	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.07783	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000955	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00194	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-157.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	513.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2110	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.

H4C

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental