ISO 9177-2:1989
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ISO 9177-2:1989
16782

Status : Withdrawn

This standard has been revised by ISO 9177-2:2022

Abstract

Two types are available, black leads in which the binding agent is an organic polymer (designated by the letter "P"), and black leads in which the binding agent is clay (designated by the letter "C"). Classification is made according to the degree of hardness. Part 1 deals with the classification, dimensions, performance requirements and testing.

General information

  •  : Withdrawn
     : 1989-03
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 2
  • ISO/TC 10
    97.180  01.100.40 
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Life cycle

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