Reference number
ISO 9177-3:2022
© ISO 2024
International Standard
ISO 9177-3:2022
Mechanical pencils for technical drawings — Part 3: Black leads — Bending strengths of HB leads
Edition 2
2022-01
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Published (Edition 2, 2022)

ISO 9177-3:2022

Language
Format
CHF 42
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Abstract

This document specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.

General information

  • Status
     : Published
    Publication date
     : 2022-01
    Stage
    : International Standard published [60.60]
  • Edition
     : 2
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 10
    ICS :
    97.180  01.100.40 
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