CaCrO4 — Properties & Data | MatWorld

CaCrO4

ceramic

· JVASP-11813· CaCrO4

Calcium chromate (CaCrO4) is an inorganic ceramic compound composed of calcium and chromate ions, belonging to the family of metal chromate ceramics. It is primarily used as a corrosion inhibitor pigment in protective coatings, primers, and rust-preventive paints for steel and aluminum substrates in aerospace, automotive, and infrastructure applications. The material is valued for its ability to passivate metal surfaces and provide long-term corrosion protection, though its use has declined in some regions due to environmental and health regulations concerning hexavalent chromium compounds; engineers often evaluate it against alternative inhibitor pigments such as zinc phosphate or strontium aluminum polyphosphate when regulatory compliance is a concern.

corrosion inhibitor pigmentsprotective coatings and primersaerospace structural coatingsautomotive anti-corrosion applicationsmetal surface passivationmarine and infrastructure protection

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	11,626.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	5,637.6	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1127	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	2.161	eV	DFT · OptB88vdW
↳	2.591	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.338	-	DFT · OptB88vdW
↳	4.809	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000968	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000964	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-241	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	434.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	10.89	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.575	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.

CaCrO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental