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Phase Product Details




Access nearly 27,600 critically-evaluated diagrams.

  • Search commentaries and diagrams by chemical system, published author’s last name, volume, language, publications year, and figure number.
  • View diagram’s chemical system, figure number, figure notes, references, commentary and footnotes.
  • Manipulate diagrams with zoom in/out, lever rule, curve follow, mirror, Mol% to Wt% or Wt% to Mol% and built-in calculator.


Phase version 4.2 is available as two separate products—Phase USB and Phase Online, with both available as single-user and multiple-user licenses.


What’s new with Phase 4.2?

Phase Version 4.2 features commentaries and 27,600 diagrams for non-organic systems all able to be printed as high-quality PDF files. In addition to adding 544 new entries and 1133 new diagrams from version 4.1, the comprehensive, searchable PC Phase 4.2 product includes all the information printed in the original Phase 21 hard‐copy volumes as well as “virtual” Volumes 15, 16, special‐Volume P (phosphorus‐containing) as well as all other special‐issue topical volumes, and Volumes 17-20.


The new content includes experimental and calculated data for a wide range of inorganic material type 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) ⇒ Oxy‐cation systems (e.g. molybdates, vanadates) ⇒ Semiconductors (Si, Ge, Sn)
⇒ Group 3 systems (B, Al, Ga, In, Tl) ⇒ Salts including mixed systems with salts  


Phase USB


Convenient for individual researchers and departments, this one-time purchase* comes with all software and phase diagrams loaded onto a USB drive. Load the software onto one computer with the single-user version or on up to 10 computers with the multi-user license. 

*NIST releases new version periodically that contain additional phase diagrams. Phase USB owners can purchase upgrades at significantly discounted prices.


Ready to purchase? Contact ACerS Customer Service at 1-866-721-3322 or 240-646-7054 for assistance.


Not sure which version to purchase? Visit the compare and purchase page.


Phase Online

Phase Online is a convenient, cost effective and reliable method to the information you need from any computer with an internet connection. As a yearly subscription service, there is no need to purchase updates. New diagrams are automatically available, making the online system more dynamic.


Phase Online has three versions for you to consider:

  • Single-user online license: one user registers for online username/password access
  • Multiple-user online license: up to 10 users register for online username/password access
  • Library subscription


Not sure which version to purchase? Visit the compare and purchase page.


Library Subscription


The Phase Online Library Subscription enables librarians to provide access to phase diagrams at all work stations within their institutions by designating ranges of IP addresses. Once the subscription is set up, individuals are able to access Phase Online without entering a username or password. Not the librarian? Download the Phase Online Library Recommendation form and submit it to your library to gain system-wide access.


These prestigious organizations are enjoying the benefits of Phase Online Library Subscription:


Argonne National Lab Johns Hopkins University Texas A&M University
Asahi Glass Johnson Matthey Technology UK Thermo-Calc Software
Boise State University Lib4ri Tohoku University
Bosch Main Library, CNL Nuclear Labs Tokyo Institute of Technology
Boston College Martin Luther Univeritaet Toyota Central R&D Labs, Inc.
Carnegie Mellon University McMaster University Tu Bergakademie Frieberg
Case Western Reserve Missouri Science & Technology UBE
CEA/France MIT Libraries University of Alberta Canada
Coe College Mitsubishi Materials Corporation University of California Irvine
Columbia University Naval Research Laboratory University of Houston
Cornell University North Carolina State University Libraries University of Michigan
Corning, Inc. Oak Ridge National Laboratory University of Oslo Library
Elyachar Central Library Ohio State University University of Queensland
ETH-Bibliothek Pennsylvania State University  
Forschungszentrum Juelich Princeton University  
Fraunhofer Institute Purdue University  
Georgetown University RSR Technologies, Inc.  
Guardian Industries Saint-Gobain  
Imperial College London Sasol North America Inc.  
Indian Institute of Science Education and Research (IISER), Bhopal Shibaura Institute  
Indian Institute of Technology Bombay Central Library SSAB Europe Oy  
Iowa State University Stanford University  



Not sure which version to purchase? Visit the compare and purchase page.


Online license technical requirements

Information and Software You Must Pre-install to Use This Application


A Subscription to the Phase Online Product – Without a subscription the only accessible part of the site is searching through the diagrams to see what is available. Downloading the commentary and diagrams are disabled for non-subscription based users. If you do not have an account you can purchase a subscription to the service at The American Ceramic Society Website.


Latest Version of Java – The Phase Equilibria Diagram viewer application is written in Java. To use this viewer and the site, your computer needs to be running the latest version of Java. Available for free at Java.com Download Java. You may have to restart your computer for Java to be fully installed.


Phase Equilibria Diagram Viewer – This is a Java application that will enable you to view the Phase Equilibria Diagrams present on the site. Once you click the link for the PED Viewer, you will download a file called ped_viewer.jnlp. Click this file in your browser window or find it in your downloads folder and select it to open it. You will be asked to give Java permission to install the viewer. Select the Yes option and the viewer will be installed using your version of Java. If the PED Viewer was successfully installed, you will see a message stating that it was installed.


Document Viewer – To open commentaries you will need an application for Microsoft Rich Text files and PDF files. For Microsoft Rich Text Files examples are Microsoft Word or Apache OpenOffice Writer. For PDF Files examples are Adobe Reader or Foxit PDF Reader.


Recommended browser – in our experience Google Chrome has been the most reliable and provides the best user experience followed by Firefox.


If further assistance is needed, please contact us at phase3@ceramics.org  


Terms of Use Agreement

Institutions requiring a signed customized version of the Terms of Use Agreement should contact Mark Mecklenborg, director of membership, meetings, and technical publications, The American Ceramic Society at mmecklenborg@ceramics.org or 614-794-5829.


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