SIST ISO 9180:1995
(Main)Black leads for wood-cased pencils -- Classification and diameters
Black leads for wood-cased pencils -- Classification and diameters
Mines graphite pour crayons à papier -- Classification et diamètres
La présente Norme internationale établit une classification et prescrit les diamètres des mines graphite utilisées pour les crayons à papier.
Grafitni vložki za lesene svinčnike - Razvrstitev in premeri
General Information
- Status
- Published
- Publication Date
- 31-May-1995
- Technical Committee
- TRS - Technical drawings, quantities, units, symbols and graphical symbols
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jun-1995
- Due Date
- 01-Jun-1995
- Completion Date
- 01-Jun-1995
Overview
ISO 9180:1988, "Black leads for wood-cased pencils - Classification and diameters," is an International Standard from ISO/TC 10 (Technical drawings) that defines how black pencil leads (graphite-based) are classified by hardness and what diameters are specified for wood-cased pencils. The standard establishes a uniform set of 17 hardness grades (from 9H to 6B) and gives minimum lead diameter requirements for groups of grades to support consistent manufacturing, performance and interchangeability.
Key Topics
- Scope: Classification and diameters applicable specifically to black leads used in wood-cased pencils.
- Hardness classification: Seventeen distinct hardness degrees are defined: 9H, 8H, 7H, 6H, 5H, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B, 6B. The classification orders hardness from 6B (softest) up to 9H (hardest) and correlates with line density.
- Definitions: Clear definitions for terms such as black lead (graphite and binder producing erasable black lines), hardness degree, and wood-cased pencil (lead permanently secured in a wood case).
- Diameter requirements: The standard specifies minimum lead diameters by hardness group as provided in its table:
- Hard grades (9H through H): minimum diameter > 1.8 mm
- Medium/soft grades (F, HB, B through 6B): minimum diameter > 2.0 mm
- Notes: The document notes that a scientific definition of “hardness degree” was not available at the time of publication; the grades indicate relative hardness and line density.
Applications
ISO 9180 is practical for:
- Pencil manufacturers: ensuring consistent lead sizing and grade labelling across product lines.
- Quality control and testing labs: verifying lead diameters and grade classification for conformity and repeatability.
- Procurement and specification writers: specifying lead grades and minimum diameters in product contracts and technical datasheets.
- Drafting and graphic supply chains: maintaining compatibility and predictable performance for technical drawing, sketching and writing applications where line density and erasability matter.
Related Standards (if applicable)
- ISO 9180 was prepared by ISO/TC 10 (Technical drawings). For comprehensive product compliance, manufacturers and specifiers should also consult other ISO documents addressing stationery, product safety and material testing where relevant (see the ISO catalogue or national standards bodies for related references).
Keywords: ISO 9180, black leads, wood-cased pencils, pencil lead classification, lead diameters, graphite leads, hardness grades, HB, 9H, 6B.
ISO 9180:1988 - Black leads for wood-cased pencils -- Classification and diameters
ISO 9180:1988 - Mines graphite pour crayons a papier -- Classification et diametres
ISO 9180:1988 - Mines graphite pour crayons a papier -- Classification et diametres
Frequently Asked Questions
SIST ISO 9180:1995 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Black leads for wood-cased pencils -- Classification and diameters". This standard covers: La présente Norme internationale établit une classification et prescrit les diamètres des mines graphite utilisées pour les crayons à papier.
La présente Norme internationale établit une classification et prescrit les diamètres des mines graphite utilisées pour les crayons à papier.
SIST ISO 9180:1995 is classified under the following ICS (International Classification for Standards) categories: 01.100.40 - Drawing equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase SIST ISO 9180:1995 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-1995
*UDILWQLYORåNL]DOHVHQHVYLQþQLNH5D]YUVWLWHYLQSUHPHUL
Black leads for wood-cased pencils -- Classification and diameters
Mines graphite pour crayons à papier -- Classification et diamètres
Ta slovenski standard je istoveten z: ISO 9180:1988
ICS:
01.100.40 Risalna oprema Drawing equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
IS0
INTERNATIdNAL STANDARD
First edition
1988-10-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXflYHAPOflHAfl OPi-AHM3AL&4fl IlO CTAH~APTM3A~MM
Black leads for wood-cased pencils - Classification
and diameters
Mines graphite pour crayons ;i papier - Classification et diam&tres
Reference number
IS0 9180: 1988 (E)
Iso 9180 : 1988 (El
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the techn
...
IS0
INTERNATIdNAL STANDARD
First edition
1988-10-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXflYHAPOflHAfl OPi-AHM3AL&4fl IlO CTAH~APTM3A~MM
Black leads for wood-cased pencils - Classification
and diameters
Mines graphite pour crayons ;i papier - Classification et diam&tres
Reference number
IS0 9180: 1988 (E)
Iso 9180 : 1988 (El
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 9180 was prepared by Technical Committee ISOITC 10,
Technical drawings.
0 International Organization for Standardization, 1988
Printed in Switzerl
...
ISO
NORME INTERNATIONALE
Première édition
1988-10-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXAYHAPOAHAR OPrAHM3A~MR IlO CTAHjJAPTM3A~MM
Mines graphite pour crayons à papier - Classification
et diamètres
Classification and dîame ters
Black leads for wood-cased pencils -
1 Numéro de référence
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fedération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est en général confiée aux comites techniques de I’ISO.
Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé a cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO participent également aux travaux. L’ISO col-
labore étroitement avec la Commission électrotechnique internationale (CEI) en ce qui
concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO. Les Normes internationales sont approuvées confor-
mément aux procédures de I’ISO qui requièrent l’approbation de 75 % au moins des
comités membres votants.
La Norme internationale ISO 9180 a et6 élaborée par le comité technique ISO/TC 10,
Dessins techniques.
0 Organisation internationale de normalisation, 1988
Imprimé en Suisse
ISO 9180 : 1988
...
ISO
NORME INTERNATIONALE
Première édition
1988-10-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
ORGANISATION INTERNATIONALE DE NORMALISATION
MEXAYHAPOAHAR OPrAHM3A~MR IlO CTAHjJAPTM3A~MM
Mines graphite pour crayons à papier - Classification
et diamètres
Classification and dîame ters
Black leads for wood-cased pencils -
1 Numéro de référence
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fedération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est en général confiée aux comites techniques de I’ISO.
Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé a cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO participent également aux travaux. L’ISO col-
labore étroitement avec la Commission électrotechnique internationale (CEI) en ce qui
concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO. Les Normes internationales sont approuvées confor-
mément aux procédures de I’ISO qui requièrent l’approbation de 75 % au moins des
comités membres votants.
La Norme internationale ISO 9180 a et6 élaborée par le comité technique ISO/TC 10,
Dessins techniques.
0 Organisation internationale de normalisation, 1988
Imprimé en Suisse
ISO 9180 : 1988
...
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