Property Data Summaries

Property Data Summaries are collections of property values derived from surveys of published data. These collections typically focus on either one material or one particular property. Studies of specific materials typically include thermal, mechanical, structural, and chemical properties, while studies of particular properties survey one property across many materials. The property values may be typical, evaluated, or validated. Values described as typical are derived from values for nominally similar materials.

CAUTION! Typical values are only representative of trends of values commonlyfound for a general class of materials and are not necessarily the best or most appropriate valuesfor any particular material.

Data Evaluation Levels

The data evaluation levels used throughout the NIST Ceramics WebBook are:
  • Certified (standard reference values)
  • Validated (confirmed via correlations and models)
  • Evaluated (basic acceptance criteria satisfied)
  • Commercial (manufacturer's data)
  • Typical (derived from surveys)
  • Research (preliminary values; work in progress)
  • Unevaluated (all other data)

Use of Commercial Names

Certain commercial equipment, instruments, or materials are identified in this document to specify adequately the experimental procedures and conditions. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.


Note: Updates and extensions of the NIST Property Data Summaries are anticipated.

Note: Comments and suggestions may be sent to

Return to the NIST Property Data Summaries for AdvancedMaterials.

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Date created: 24 October 2002
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