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

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  •  :  Withdrawn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
  •  : 1
     : 2
  •  : ISO/TC 10 Technical product documentation
  •  :
    97.180 Miscellaneous domestic and commercial equipment
    01.100.40 Drawing equipment

Life cycle


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