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ISO 9177-3:1994

Mechanical pencils -- Part 3: Black leads -- Bending strengths of HB leads

General information
Withdrawn from 26.01.2022
Directives or regulations
None

Standard history

Status
Date
Type
Name
26.01.2022
Main
30.06.1994
Main
Specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.
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PDF
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Paper
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