The NIST WWW High Temperature Superconductors database (WebHTS) provides evaluated thermal, mechanical, and superconducting property data for oxide superconductors. The range of materials covers the major series of compounds derived from the Y-Ba-Cu-O, Bi-Sr-Ca-Cu-O, Tl-Sr-Ca-Cu-O, and La-Cu-O chemical families, along with numerous other variants of the cuprate and bismuthate materials that are known to have superconducting phases. The materials are described by specification and characterization information that includes processing details and chemical compositions. Physical characteristics such as density and crystal structure are given in numeric tables. All measured values are evaluated and supported by descriptions of the measurement methods, procedures, and conditions. In all cases, the sources of the data are fully documented in a comprehensive bibliography.

The data in the ACerS-NIST Phase Equilibria Diagrams Database, jointly copyrighted by NIST and The American Ceramic Society, provide maps of the equilibrium chemical and structural behaviors exhibited by inorganic systems and provide critical starting information for the rational design of materials processing schemes, for quality assurance efforts, and for optimization of the physical and chemical properties of advanced materials. The contents of this database consist of approximately 25,000 equilibrium phase diagrams presented in 17,866 critically evaluated entries (PED Figures). The materials covered include a wide range of non-organic material-types including oxides and mixed systems with oxides, chalcogenides (sulfides, selenides, tellurides), pnictides (N, P, As, Sb, Bi), actinides (U, Pu, Th) and actinide-surrogates (Ce), oxycation systems (e.g. molybdates, vanadates), semiconductors (Si, Ge, Sn), group 3 systems (B, Al, Ga, In, Tl), and salts including mixed systems with salts. The data are pertinent to a wide variety of applications including optoelectronics, thermal-barrier coatings, sensors, energy converters, nuclear waste reprocessing, nuclear reactors, photovoltaics, pigments, fuel cells, catalysts, thermoelectrics, capacitors, transducers, thermoluminescence, molten-salt batteries, photovoltaics, electrolytic refining, and semiconductor manufacturing. A free demonstration CDROM which includes a comprehensive Cumulative Index for the entire database is available upon request or can be downloaded from the website http://www.nist.gov/srd/nist31.cfm.

The Web Thermo Tables (WTT) are a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package. Also included are some critically evaluated data from the historical TRC Thermodynamic Tables archive. The Lite Edition is a subset of the data for commonly-used pure compounds. For the full data set please see the Professional Edition (http://www.nist.gov/srd/nistwebsub3.cfm)

The Web Thermo Tables (WTT) are a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package. Also included are some critically evaluated data from the historical TRC Thermodynamic Tables archive. The Professional Edition contains information on over 28,000 compounds. For a subset of the data focused on commonly-used pure compounds please see the Lite Edition (http://www.nist.gov/srd/nistwebsub2.cfm) .