ISO/DIS 9177-2

Mechanical pencils — Part 2: Black leads — Classification and dimensions

Publication date: Jun 1, 2022

General information

Current stage: 40.99 Effective date: Jul 5, 2021

Originator: ISO

Owner: ISO/TC 10

Type: International Standard

ICS: 01.100.40 97.180

Languages: English

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Status: Published

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Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO 9177-2:1989

NOW

IN_DEVELOPMENT
ISO/DIS 9177-2
40.99 Full report circulated: DIS approved for registration as FDIS
Jul 5, 2021

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