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Federal
NIST alloy data
National Institute of Standards and Technology —
The NIST Alloy data web application (https://trc.nist.gov/metals_data) provides access to thermophysical property data with a focus on unary, binary, and ternary... -
Federal
NIST Atomic Spectral Line Broadening Bibliographic Database
National Institute of Standards and Technology —
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 6000 references, dating from 1889 through current year and is... -
Federal
NIST Atomic Weights and Isotopic Compositions with Relative Atomic Masses
National Institute of Standards and Technology —
The atomic weights are available for elements 1 through 118 and isotopic compositions or abundances are given when appropriate. Version 3.0. -
Federal
Standard Reference Material (SRM) 3290 Dry Cat Food Data
National Institute of Standards and Technology —
This data comprises the information that was used to assign values, the assigned values themselves, and the associated uncertainties. Certificate date 20 May 2024. -
Federal
NIST XCOM: Photon Cross Sections Database - SRD 8
National Institute of Standards and Technology —
A web database is provided which can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total... -
Federal
Periodic Table of the Elements: Atomic Properties
National Institute of Standards and Technology —
A periodic table, containing NIST critically-evaluated data on atomic properties of the elements [SP 966] was designed as a NIST handout for use at exhibitions and... -
Federal
SRM 1548b Typical Diet
National Institute of Standards and Technology —
SRM 1548b electronic files containing the non-certified value and uncertainty, and the data used to assign that value. Certificate date 24 June 2024: Non-certified...