ISO 9177-3:2022
(Main)Mechanical pencils for technical drawings — Part 3: Black leads — Bending strengths of HB leads
Mechanical pencils for technical drawings — Part 3: Black leads — Bending strengths of HB leads
This document specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.
Porte-mines pour le dessin technique — Partie 3: Mines graphite — Résistance à la flexion des mines HB
Tehnični svinčniki za tehnično risanje - 3. del: Grafitni vložki - Upogibna trdnost grafitnih vložkov HB
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SLOVENSKI STANDARD
SIST ISO 9177-3:2023
01-september-2023
Nadomešča:
SIST ISO 9177-3:1995
Tehnični svinčniki za tehnično risanje - 3. del: Grafitni vložki - Upogibna trdnost
grafitnih vložkov HB
Mechanical pencils for technical drawings - Part 3: Black leads — Bending strengths of
HB leads
Porte-mines pour le dessin technique - Partie 3: Mines graphite — Résistance à la
flexion des mines HB
Ta slovenski standard je istoveten z: ISO 9177-3:2022
ICS:
01.100.40 Risalna oprema Drawing equipment
97.180 Razna oprema za dom in Miscellaneous domestic and
trgovino commercial equipment
SIST ISO 9177-3:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 9177-3:2023
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SIST ISO 9177-3:2023
INTERNATIONAL ISO
STANDARD 9177-3
Second edition
2022-01
Mechanical pencils for technical
drawings —
Part 3:
Black leads — Bending strengths of
HB leads
Porte-mines pour le dessin technique —
Partie 3: Mines graphite — Résistance à la flexion des mines HB
Reference number
ISO 9177-3:2022(E)
© ISO 2022
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SIST ISO 9177-3:2023
ISO 9177-3:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 9177-3:2023
ISO 9177-3:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bending strength . 1
4.1 General . 1
4.2 Bending strength of HB leads for mechanical pencils . 1
5 Test method . 2
6 Test report . 3
Bibliography . 4
iii
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
SIST ISO 9177-3:2023
ISO 9177-3:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the I
...
INTERNATIONAL ISO
STANDARD 9177-3
Second edition
2022-01
Mechanical pencils for technical
drawings —
Part 3:
Black leads — Bending strengths of
HB leads
Porte-mines pour le dessin technique —
Partie 3: Mines graphite — Résistance à la flexion des mines HB
Reference number
ISO 9177-3:2022(E)
© ISO 2022
---------------------- Page: 1 ----------------------
ISO 9177-3:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 9177-3:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bending strength . 1
4.1 General . 1
4.2 Bending strength of HB leads for mechanical pencils . 1
5 Test method . 2
6 Test report . 3
Bibliography . 4
iii
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 9177-3:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barri
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9177-3
ISO/TC 10
Mechanical pencils for technical
Secretariat: SIS
drawings —
Voting begins on:
2021-10-27
Part 3:
Voting terminates on:
Black leads — Bending strengths of
2021-12-22
HB leads
Partie 3: Mines graphite — Résistance à la flexion des mines HB
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9177-3:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 9177-3:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 9177-3:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bending strength . 1
4.1 General . 1
4.2 Bending strength of HB leads for mechanical pencils . 1
5 Test method . 2
6 Test report . 3
Bibliography . 4
iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/FDIS 9177-3:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO 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, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an
...
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