EN ISO 6508-1:2005

Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)

ISO 6508-1:2005 specifies the method for Rockwell and Rockwell superficial hardness tests for metallic materials.

Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 1: Prüfverfahren (Skalen A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)

In dieser Internationalen Norm ist das Verfahren zur Härteprüfung nach Rockwell für metallische Werkstoffe festgelegt (Skalen und Anwendungsbereiche nach Tabelle 1).
Es ist zu beachten, dass in diesem Teil von ISO 6508 für die Rockwellhärteprüfung die Verwendung von Hartmetalleindringkörpern als Standardtyp für den Rockwelleindringkörper festgelegt ist. Stahlkugeleindring-körper dürfen weiterhin verwendet werden, wenn es in einer Erzeugnisnorm oder in einer speziellen Vereinbarung festgelegt ist.
ANMERKUNG 1   Es ist zu beachten, dass Härtewerte, die  bei der  Prüfung mit Hartmetallkugeln erhalten werden, von denen mit Stahlkugeln ermittelten abweichen können. Für Sonder-Werkstoffe und/oder Erzeugnisse gelten besondere Internationale Normen (z. B. ISO 3738-1 und ISO 4498-1).
ANMERKUNG 2   Für besondere Werkstoffe kann der Anwendungsbereich eingeschränkter sein, als in dieser Norm angegeben.

Matériaux métalliques - Essai de dureté Rockwell - Partie 1: Méthode d'essai (échelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)

L'ISO 6508-1:2005 spécifie la méthode d'essai de dureté Rockwell et de dureté superficielle Rockwell pour les matériaux métalliques.

Kovinski materiali – Preskus trdote po Rockwellu – 1. del: Preskusna metoda (skale A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)

General Information

• Status: Withdrawn
• Publication Date: 14-Dec-2005
• Withdrawal Date: 03-Mar-2015
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: ECISS/TC 101 - Test methods for steel (other than chemical analysis)
• Drafting Committee: ECISS/TC 1 - Steel - Mechanical testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 04-Mar-2015
• Ref Project: SIST EN ISO 6508-1:2006 - Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)

Relations

• Replaces: EN ISO 6508-1:1999 - Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:1999)
• Effective Date: 22-Dec-2008
• Replaced By: EN ISO 6508-1:2015 - Metallic materials - Rockwell hardness test - Part 1: Test method (ISO 6508-1:2015)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2006
1DGRPHãþD
SIST EN ISO 6508-1:2000
Kovinski materiali – Preskus trdote po Rockwellu – 1. del: Preskusna metoda
(skale A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)
Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F,
G, H, K, N, T) (ISO 6508-1:2005)
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 1: Prüfverfahren (Skalen A,
B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)
Matériaux métalliques - Essai de dureté Rockwell - Partie 1: Méthode d'essai (échelles
A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)
Ta slovenski standard je istoveten z: EN ISO 6508-1:2005
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 6508-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.040.10 Supersedes EN ISO 6508-1:1999
English Version
Metallic materials - Rockwell hardness test - Part 1: Test method
(scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005)
Matériaux métalliques - Essai de dureté Rockwell - Partie 1: Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil
Méthode d'essai (échelles A, B, C, D, E, F, G, H, K, N, T) 1: Prüfverfahren (Skalen A, B, C, D, E, F, G, H, K, N, T)
(ISO 6508-1:2005) (ISO 6508-1:2005)
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 6508-1:2005: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 6508-1:2005) 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 6508-1:1999.

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 6508-1:2005 has been approved by CEN as EN ISO 6508-1:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 6508-1
Second edition
2005-12-15
Metallic materials — Rockwell hardness
test —
Part 1:
Test method (scales A, B, C, D, E, F, G, H,
K, N, T)
Matériaux métalliques — Essai de dureté Rockwell —
Partie 1: Méthode d'essai (échelles A, B, C, D, E, F, G, H, K, N, T)

Reference number
ISO 6508-1:2005(E)
©
ISO 2005
ISO 6508-1:2005(E)
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ISO 6508-1:2005(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Principle. 1
4 Symbols, abbreviated terms and designations . 1
5 Testing machine. 4
6 Test piece . 4
7 Procedure . 5
8 Uncertainty of the results . 6
9 Test report . 6
Annex A (normative) Conventional HR30Tm and HR15Tm test for thin products. 8
Annex B (normative) Minimum thickness of the test piece in relation to the Rockwell hardness. 9
Annex C (normative) Corrections to be added to Rockwell hardness values obtained on convex
cylindrical surfaces . 12
Annex D (normative) Corrections to be added to Rockwell hardness C scale values obtained on
spherical test surfaces of various diameters . 15
Annex E (informative) Procedure for periodic checking of the testing machine by the user . 16
Annex F (informative) Notes on diamond indenters. 17
Annex G (informative) Uncertainty of the measured hardness values. 18
Bibliography . 24

ISO 6508-1:2005(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 6508-1 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 3, Hardness testing.
This second edition cancels and replaces the first edition (ISO 6508-1:1999), which has been technically
revised.
ISO 6508 consists of the following parts, under the general title Metallic materials — Rockwell hardness test:
— Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)
— Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T)
— Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T)
iv © ISO 2005 – All rights reserved

ISO 6508-1:2005(E)
Introduction
The periodic checking of the testing machine described in informative Annex E is good metrological practice. It
is intended to make the annex normative in the next revision of this part of ISO 6508.

INTERNATIONAL STANDARD ISO 6508-1:2005(E)

Metallic materials — Rockwell hardness test —
Part 1:
Test method (scales A, B, C, D, E, F, G, H, K, N, T)
1 Scope
This part of ISO 6508 specifies the method for Rockwell and Rockwell superficial hardness tests (scales and
field of application according to Table 1) for metallic materials.
Attention is drawn to the fact that, in this part of ISO 6508, the use of hardmetal for ball indenters is
considered to be the standard type of Rockwell indenter ball. Steel indenter balls may be continued to be used
if specified in a product specification, or by special agreement.
NOTE 1 Attention is drawn to the fact that results obtained with hardmetal balls can be significantly different than when
using a steel ball. For specific materials and/or products, other specific International Standards apply (for instance
ISO 3738-1 and ISO 4498-1).
NOTE 2 For certain materials, the fields of application may be narrower than those indicated.
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 6508-2:2005, Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing
machines (scales A, B, C, D, E, F, G, H, K, N, T)
3 Principle
Forcing an indenter of specified size, shape and material into the surface of a test piece in two steps under
specified conditions (see Clause 7). Measuring the permanent depth h of indentation under preliminary test
force after removal of additional test force.
From the values of h and that of the two constants N and S (see Table 2), the Rockwell hardness is calculated
according to the formula:
h
Rockwell hardness=−N (1)
S
4 Symbols, abbreviated terms and designations
4.1 See Tables 1 and 2 and Figure 1.
ISO 6508-1:2005(E)
Table 1 — Rockwell scales
Rockwell Hardness Type of indenter Preliminary Additional Total test Field of application
hardness symbol test force test force force (Rockwell hardness test)
scale F F F
0 1
a
A HRA Diamond cone 98,07 N 490,3 N 588,4 N 20 HRA to 88 HRA

b
HRB Ball 1,587 5 mm 98,07 N 882,6 N 980,7 N 20 HRB to 100 HRB
B
c
C HRC Diamond cone 98,07 N 1,373 kN 1,471 kN 20 HRC to 70 HRC
D HRD Diamond cone 98,07 N 882,6 N 980,7 N 40 HRD to 77 HRD
E HRE Ball 3,175 mm 98,07 N 882,6 N 980,7 N 70 HRE to 100 HRE
F HRF Ball 1,587 5 mm 98,07 N 490,3 N 588,4 N 60 HRF to 100 HRF
G HRG Ball 1,587 5 mm 98,07 N 1,373 kN 1,471 kN 30 HRG to 94 HRG
H HRH Ball 3,175 mm 98,07 N 490,3 N 588,4 N 80 HRH to 100 HRH
K HRK Ball 3,175 mm 98,07 N 1,373 kN 1,471 kN 40 HRK to 100 HRK
15N HR15N Diamond cone 29,42 N 117,7 N 147,1 N 70 HR15N to 94 HR15N
30N HR30N Diamond cone 29,42 N 264,8 N 294,2 N 42 HR30N to 86 HR30N
45N HR45N Diamond cone 29,42 N 411,9 N 441,3 N 20 HR45N to 77 HR45N
15T HR15T Ball 1,587 5 mm 29,42 N 117,7 N 147,1 N 67 HR15T to 93 HR15T
30T HR30T Ball 1,587 5 mm 29,42 N 264,8 N 294,2 N 29 HR30T to 82 HR30T
45T HR45T Ball 1,587 5 mm 29,42 N 411,9 N 441,3 N 10 HR45T to 72 HR45T
a
The field of application can be extended to 94 HRA for testing carbides.
b
The field of application can be extended to 10 HRBW if specified in the product specification or by special agreement.
c
The field of application
...