The Materials Guide allows to find material science databases and to filter them by material class and ways of accessing them.

COMAR

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COMAR is a database of BAM (Bundesanstalt für Materialforschung- und Prüfung - Federal Institute for Materials Research and Testing) for certified reference materials in materials testing. A free registration is necessary.
Alternative Names International database for certified reference materials
Keywords reference materials
Material Classes Metals, Non-Metallic Inorganic Materials, Polymers, Advanced materials
Links website | DBIS link