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NIST Standard Reference Database 31

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ACerS-NIST Phase Equilibria Diagrams Database:
(formerly known as Phase Diagrams for Ceramists)

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The Phase Equilibria Diagrams PC Database, Version 4.0 (2014)

Phase Equilibria Diagrams, (Standard Reference Database SRD 31), published from 1964 to 1992 as the well-known Phase Diagrams for Ceramists "blue books", is the result of a long-standing collaboration between NIST and The American Ceramic Society to develop and maintain a state-of-the-art database of critically evaluated phase equilibria data for industrial and academic customers. The diagrams serve as maps of the equilibrium chemical and structural behaviors exhibited by materials 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 Phase Equilibria Diagrams Database contains commentaries and 25,000 diagrams for non-organic systems, including those published in all 21 hard-copy volumes produced as part of the ACerS-NIST Phase Equilibria Diagrams Program: hard-copy Volumes I through XIV ("blue books"); Annuals 91, 92, 93; High Tc Superconductors I & II; Zirconium & Zirconia Systems; and Electronic Ceramics I. Materials covered include oxides as well as non-oxide systems such as chalcogenides and pnictides, phosphates, salt systems, and mixed systems of these classes.

Version 4.0 features all-new software resulting from a recently completed comprehensive upgrade of the content management system, the user interface, and the graphics digitization program (PED Editor). The new user interface is browser-based and includes help icons located at each input position. In addition to the previously available search criteria (chemical system, author, etc.) users are now able to perform keyword searches of the critical evaluations of all 17,866 entries, allowing them to associate material systems with potential applications mentioned in the text. In addition, all 25,000 diagrams in the collection were converted into an updated format using the new PED Editor program, enabling all diagrams to be printed as high-quality .pdf files. The PED Editor is available for free download and can be used by materials researchers to digitize phase diagrams and extract data from phase diagrams or other two-dimensional scientific drawings.

Version 4.0 provides 637 new entries (Figs. 14236-14872, electronic Volume 18) with 1000 new diagrams. The comprehensive, searchable desktop application includes all the information printed in the 21 hard-copy volumes as well as "virtual" Volumes 15, 16, special-Volume P (phosphorus-containing), 17, and 18.  (Publication of hard-copy books was discontinued after Vol. 14.) The new content includes experimental and calculated data for 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. The new figures are labeled as Volume 18 in this release.


The free demonstration version contains the same functionality as the full version, but with limited content consisting of the 202 figures published in the Phase Diagrams for Ceramists: Annual '92, and 11 figures from Volume 15.  In addition, the demonstration version serves as a searchable, comprehensive chemical index for the entire database.

Effective immediately, there will be a minimum $30.00 shipping charge for all international shipments of databases via UPS International. Customer will be responsible for their own duties, tax, and VAT. Contact 301 975 2200 or if you have questions.


Download free demo version.

If you would like to receive a free demonstration-version disk, please click here. You will need to provide your shipping address.

Single User full version - $950.00 online faxmail
Single User annual upgrade from Version 3.4 -$250.00 onlinefaxmail
Single User Upgrade from Version 3.3 - $500.00 onlinefaxmail
Single User Upgrade from Version. 3.2 - $750.00 onlinefaxmail
Multiple User full version - $1625.00 onlinefaxmail
Multiple User annual upgrade from 3.4 - $425.00 onlinefaxmail
Multiple User annual upgrade from Version 3.3 - $850.00 onlinefaxmail
Multiple User annual upgrade from Version 3.2 - $1275.00 onlinefaxmail


For more information please contact:
National Institute of Standards and Technology
Standard Reference Data Program
100 Bureau Dr., Stop 8550
Gaithersburg, MD 20899-8550
(301) 975-2200 (VOICE)/
(301) 975-4553 (FAX) / Contact Us

For information on ordering books, or Phase Online:
Contact ACerS Customer Service Department at:
The American Ceramic Society (ACerS)
600 North Cleveland Ave, Suite 210
Westerville, OH 43082
Phone: 1- 866-721-3322 or 240-646-7054

Order on-line at:

The scientific contact for this database:

Terrell Vanderah, Editor-in-Chief 
Phase Equilibria Diagrams Data Center
National Institute of Standards and Technology
MS 8520, 100 Bureau Drive
Gaithersburg, MD 20899-8580
(301) 975-5785

Keywords: Advanced ceramics; ceramic; ceramic phase diagrams; phase diagrams; phase equilibria; phase equilibrium.