SIST EN ISO 6506-1:2006

Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2005)

This part of EN ISO 6506 specifies the method for the Brinell  hardness test for metallic materials and is applicable up to the  limit of 650 HBW. For specific materials and/or products,  particular International Standards (i.e. ISO 4498-1).

Metallische Werkstoffe - Härteprüfung nach Brinell - Teil 1: Prüfverfahren (ISO 6506-1:2005)

In diesem Teil von ISO 6506 ist das Verfahren für die Prüfung der Brinellhärte von metallischen Werkstoffen bis zu einer Grenze von 650 HBW festgelegt.
Für besondere Werkstoffe und/oder Erzeugnisse gibt es spezielle Internationale Normen (z. B. ISO 4498-1).

Matériaux métalliques - Essai de dureté Brinell - Partie 1: Méthode d'essai (ISO 6506-1:2005)

L'ISO 6506-1:2005 spécifie la méthode d'essai de dureté Brinell pour les matériaux métalliques et s'applique jusqu'à la limite de 650 HBW.

Kovinski materiali – Preskus trdote po Brinellu – 1. del: Preskusns metoda (ISO 6506-1:2005)

General Information

• Status: Withdrawn
• Publication Date: 28-Feb-2006
• Withdrawal Date: 14-Oct-2014
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: PKG - Testing of metallic materials
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 13-Oct-2014
• Due Date: 05-Nov-2014
• Completion Date: 15-Oct-2014
• Ref Project: EN ISO 6506-1:2005 - Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2005)

Relations

• Replaced By: SIST EN ISO 6506-1:2014 - Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2014)
• Effective Date: 01-Dec-2014

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6506-1:2006
01-marec-2006
1DGRPHãþD
SIST EN ISO 6506-1:2000
Kovinski materiali – Preskus trdote po Brinellu – 1. del: Preskusns metoda (ISO
6506-1:2005)
Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2005)
Metallische Werkstoffe - Härteprüfung nach Brinell - Teil 1: Prüfverfahren (ISO 6506-
1:2005)
Matériaux métalliques - Essai de dureté Brinell - Partie 1: Méthode d'essai (ISO 6506-
1:2005)
Ta slovenski standard je istoveten z: EN ISO 6506-1:2005
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
SIST EN ISO 6506-1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 6506-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.040.10 Supersedes EN ISO 6506-1:1999
English Version
Metallic materials - Brinell hardness test - Part 1: Test method
(ISO 6506-1:2005)
Matériaux métalliques - Essai de dureté Brinell - Partie 1: Metallische Werkstoffe - Härteprüfung nach Brinell - Teil 1:
Méthode d'essai (ISO 6506-1:2005) Prüfverfahren (ISO 6506-1:2005)
This European Standard was approved by CEN on 14 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6506-1:2005: E
worldwide for CEN national Members.

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EN ISO 6506-1:2005 (E)





Foreword


This document (EN ISO 6506-1:2005) has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee ECISS/TC 1 "Steel -
Mechanical 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 June 2006, and conflicting national
standards shall be withdrawn at the latest by June 2006.

This document supersedes EN ISO 6506-1:1999.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 6506-1:2005 has been approved by CEN as EN ISO 6506-1:2005 without any
modifications.

2

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INTERNATIONAL ISO
STANDARD 6506-1
Second edition
2005-12-15


Metallic materials — Brinell hardness
test —
Part 1:
Test method
Matériaux métalliques — Essai de dureté Brinell —
Partie 1: Méthode d'essai




Reference number
ISO 6506-1:2005(E)
©
ISO 2005

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ISO 6506-1:2005(E)
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©  ISO 2005
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ii © ISO 2005 – All rights reserved

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ISO 6506-1:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope.1
2 Normative references.1
3 Principle.1
4 Symbols and abbreviated terms .2
5 Apparatus.3
6 Test piece.3
7 Procedure.4
8 Uncertainty of the results .6
9 Test report.6
Annex A (informative) Procedure for periodic checking of the testing machine by the user.7
Annex B (normative) Minimum thickness of the test piece in relation to the mean diameter of
indentation.8
Annex C (informative) Uncertainty of the measured hardness values .9
Bibliography .15

© ISO 2005 – All rights reserved iii

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ISO 6506-1:2005(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 6506-1 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 3, Hardness testing.
This second edition, together with ISO 6506-4, cancels and replaces the first edition (ISO 6506-1:1999), which
has been technically revised.
ISO 6506 consists of the following parts, under the general title Metallic materials — Brinell hardness test:
⎯ Part 1: Test method
⎯ Part 2: Verification and calibration of testing machines
⎯ Part 3: Calibration of reference blocks
⎯ Part 4: Table of hardness values

iv © ISO 2005 – All rights reserved

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ISO 6506-1:2005(E)
Introduction
Attention is drawn to the fact that in this part of ISO 6506, only the use of the hardmetal ball indenter is
specified.
The designation of the Brinell hardness is HBW and should not be confused with the former designation HB,
or HBS when a steel ball indenter was used.
Periodic checking of the testing machine described in the informative Annex A is good metrological practice. It
is intended to make this annex normative in the next revision of this part of ISO 6506.
.
© ISO 2005 – All rights reserved v

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INTERNATIONAL STANDARD ISO 6506-1:2005(E)

Metallic materials — Brinell hardness test —
Part 1:
Test method
1 Scope
This part of ISO 6506 specifies the method for the Brinell hardness test for metallic materials and is applicable
up to the limit of 650 HBW.
For specific materials and/or products, particular International Standards exist (i.e. ISO 4498-1).
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 4498-1, Sintered metal materials, excluding hardmetals — Determination of apparent hardness — Part 1:
Materials of essentially uniform section hardness
ISO 6506-2:2005, Metallic materials — Brinell hardness test — Part 2: Verification and calibration of testing
machines
ISO 6506-4, Metallic materials — Brinell hardness test — Part 4: Table of hardness values
3 Principle
An indenter (hardmetal ball with diameter D) is forced into the surface of a test piece and, after removal of the
force F, the diameter of the indentation d left in the surface is measured.
The Brinell hardness is proportional to the quotient obtained by dividing the test force by the curved surface
area of the indentation. The indentation is assumed to retain the shape of the ball, and its surface area is
calculated from the mean indentation diameter and the ball diameter.
© ISO 2005 – All rights reserved 1

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ISO 6506-1:2005(E)
4 Symbols and abbreviated terms
4.1 See Figure 1 and Table 1.
Table 1 — Symbols and abbreviated terms
Symbol /
Designation Unit
Abbreviated term
D Diameter of the ball mm
F
Test force N
d Mean diameter of the indentation mm

dd+
12
d =

2

d , d Indentation diameters measured at 90° mm
1 2


D
22
mm
Depth of indentation hd=−(1 1−D )
h
2





Brinell hardness
HBW

Test force
=×Constant

Surface area of indentation


2 F
HBW=×0,102

222)
πDd(1−−1 /D


2 2
0,102×F/D force-diameter ratio N/mm
1
NOTE Constant=≈0,102 , where 9,806 65 is the conversion factor from kgf to N.
9,806 65

4.2 The following is an example of the designation of Brinell hardness, HBW.
EXAMPLE

NOTE In former standards, in cases when a steel ball had been used, the Brinell hardness was denoted by HB or
HBS.
2 © ISO 2005 – All rights reserved

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ISO 6506-1:2005(E)

For symbols, see Table 1.
Figure 1 — Principle of test
5 Apparatus
5.1 Testing machine, capable of applying a predetermined test force or forces within the range of 9,807 N
to 29,42 kN, in accordance with ISO 6506-2.
5.2 Indenter, a polished hardmetal ball, as specified in ISO 6506-2.
5.3 Measuring device, as specified in ISO 6506-2.
NOTE A suggested procedure for periodic checks by the user is given in Annex A.
6 Test piece
6.1 The test shall be carried out on a surface which is smooth and even, free from oxide scale, foreign
matter and, in particular, free from lubricants. The test piece shall have a surface finish that will allow an
accurate measurement of the diameter of the indentation.
6.2 Preparation shall be carried out in such a way that any alteration of the surface, for example, due to
excessive heating or cold-working, is minimized.
6.3 The thickness of the test piece shall be at least eight times the depth of indentation. Values for the
minimum thickness of the test piece in relation to the mean diameter of indentation are given in Annex B.
Visible deformation at the back of the test piece can indicate that the test piece is too thin.
© ISO 2005 – All rights reserved 3

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ISO 6506-1:2005(E)
7 Procedure
7.1 In general, the test is to be carried out at ambient temperature within the limits of 10 °C to 35 °C. Tests
carried out under controlled conditions shall be made at a temperature of (23 ± 5) °C.
7.2 The test forces given in Table 2 shall be used.
NOTE Other test forces and force-diameter ratios may be used by special agreement.
7.3 The test force shall be chosen so that the diameter of the indentation d lies between the values 0,24 D
and 0,6 D.
2
Table 3 indicates recommended force-diameter ratios (0,102 × F/D ) that are appropriate for use when testing
certain materials and hardness levels.
In order to test the largest representative area of the test piece, the diameter of the testing ball shall be
chosen to be as large as possible.
When the thickness of the test piece permits, a 10 mm diameter ball is preferred.
7.4 The test piece shall be placed on a rigid support. The contact surfaces shall be clean and free from
foreign matter (scale, oil, dirt, etc). It is important that the test piece lies firmly on the support so that
displacement cannot occur during the test.
7.5 Bring the indenter into contact with the test surface and apply the test force in a direction perpendicular
to the surface, without shock, vibration or overrun, until the applied force attains the specified value. The time
from the initial application of force to the time the full test force is reached shall not be less than 2 s nor
greater than 8 s. Maintain the test force for 10 s to 15 s. For certain materials, where a longer duration of the
test force is required; this time shall be applied with a tolerance of ± 2 s.
7.6 Throughout the test, the testing machine shall be protected from significant shock or vibration, which
can influence the test result.
7.7 The distance of the edge of the test piece to the centre of each indenta
...