EN ISO 3887:2003

SLOVENSKI STANDARD
01-marec-2004
-HNOD'RORþHYDQMHJORELQHUD]RJOLþHQHSODVWL,62
Steels - Determination of depth of decarburization (ISO 3887:2003)
Stahl - Bestimmung der Entkohlungstiefe
Aciers - Détermination de la profondeur de décarburation (ISO 3887:2003)
Ta slovenski standard je istoveten z: EN ISO 3887:2003
ICS:
77.040.99 Druge metode za Other methods of testing of
preskušanje kovin metals
77.080.20 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 3887
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2003
ICS 77.040.99
English version
Steels - Determination of depth of decarburization (ISO
3887:2003)
Aciers - Détermination de la profondeur de décarburation Stahl - Bestimmung der Entkohlungstiefe (ISO 3887:2003)
(ISO 3887:2003)
This European Standard was approved by CEN on 17 January 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3887:2003 E
worldwide for CEN national Members.

CORRECTED  2003-07-16
Foreword
This document (EN ISO 3887:2003) has been prepared by Technical Committee ISO/TC 17
"Steel" in collaboration with Technical Committee ECISS/TC 2 "Steel - Physico-chemical and
non-destructive testing", the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by September 2003, and conflicting national
standards shall be withdrawn at the latest by September.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 3887:2003 has been approved by CEN as EN ISO 3887:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 6507-1 1997 Metallic materials — Vickers hardness EN ISO 6507-1 1997
test — Part 1: Test method
ISO 9556 1989 Steel and iron — Determination of total EN ISO 9556 2001
carbon content — Infrared absorption
method after combustion in an
induction furnace
ISO 15349-2 1999 Unalloyed steel - Determination of low EN ISO 15349-2 2003
carbon content - Part 2: Infrared
absorption method after combustion in
an induction furnace (with preheating)
INTERNATIONAL ISO
STANDARD 3887
Second edition
2003-03-01
Steels — Determination of depth of
decarburization
Aciers — Détermination de la profondeur de décarburation

Reference number
ISO 3887:2003(E)
©
ISO 2003
ISO 3887:2003(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2003
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2003 — All rights reserved

ISO 3887:2003(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 3887 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 7, Methods of testing
(other than mechanical tests and chemical analysis).
This second edition cancels and replaces the first edition (ISO 3887:1976), which has been technically revised.

INTERNATIONAL STANDARD ISO 3887:2003(E)

Steels — Determination of depth of decarburization
1 Scope
This International Standard defines decarburization and specifies three methods of measuring the depth of
decarburization of non-alloy and low-alloy steels.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 4545, Metallic materials — Hardness test — Knoop test
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 9556, Steel and iron — Determination of total carbon content — Infrared absorption method after
combustion in an induction furnace
ISO 15349-2, Unalloyed steel — Determination of low carbon content — Part 2: Infrared absorption method
after combustion in an induction furnace (with preheating)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
decarburization
loss of carbon from the surface zone of the steel where the loss is:
a) either partial decarburization, d ;
b) or complete decarburization, d , measured as the distance between the surface of the product and the
point at which carbon is detectable
NOTE The depth of complete decarburization as described in b) is determined by examination of the microstructure.
3.2
depth of functional decarburization
d
distance between the surface of the product and the point at which the carbon content or hardness is at the
level where the performance of the product would be unaffected by a reduction in carbon (i.e., at the minimum
level specified in the product standard)
ISO 3887:2003(E)
3.3
depth of total decarburization
d
distance between the surface of the product and the point at which the carbon content is that of the unaffected
core, the sum of the partial and the complete decarburization d + d being designated by the letters DD and
3 1
expressed in millimetres, e.g., DD = 0,08 mm
NOTE The various bands of decarburization are shown diagrammatically in Figure 1. The boundaries separating the
various types of decarburizat
...