Specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.
WITHDRAWN
ISO 9177-3:1994
95.99
Withdrawal of Standard
Jan 26, 2022
PUBLISHED
ISO 9177-3:2022
Mechanical pencils — Part 3: Black leads — Bending strengths of HB leads
95.99 Withdrawal of Standard
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