Rationale

The revisions to the terminology section of ASTM F3627-24 is required due to the withdrawal of ASTM F1646-16, which previously provided essential definitions referenced throughout this guide. Following F13’s 2025 decision to discontinue a centralized terminology document, individual standards must now maintain their own definitions. Updating and expanding terminology within F3627-24 ensures clarity, consistency, and functional alignment with related F13.50 standards while preventing ambiguity resulting from cross-referencing a withdrawn document. These updates support users in effectively applying the guide and uphold ASTM’s principles for clear and internationally aligned standard development.