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This document specifies a method for determination of the Mettler softening point of pitch and other meltable organic substances with a Mettler softening point of 30 °C to 250 °C which are used as binding and impregnating materials. The committee responsible for this standard is NA 062-02-81 AA "Prüfverfahren für Kohlenstoff und Graphit" ("Testing of carbonaceous materials") at DIN.
This document replaces DIN 51920:1984-04 .
This document has been replaced by: DIN 51920:2020-12 .