Ba
metal· Ba
Barium is a soft, silvery-white alkaline earth metal with relatively low density and moderate stiffness. Industrial applications are limited for barium metal itself; instead, barium is primarily valued in compound forms (barium oxide, barium sulfate, barium carbonate) where it serves as a critical additive in ceramics, glass, pigments, and drilling fluids. Engineers select barium compounds for their ability to increase refractive index and opacity, provide X-ray shielding, or modify material properties in specialized coatings and composites.
X-ray shielding and diagnosticsGlass and ceramic manufacturingOil and gas drilling fluidsPigments and colorantsWelding rod coatings
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 1,284.6 | ksi | — | ||
| ↳ | 1,431.5 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 3.051 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2343 | - | — | ||
| ↳ | 0.2300 | - | — | ||
Shear Modulus(G)2 entries | 829.5 | ksi | — | ||
| ↳ | 1,093.6 | ksi | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1387 | 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 | — | ||
Seebeck Coefficient(S) | 14.41 | 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) | 0.000 | 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.