EN ISO 6871-1:1996

Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)

To specify requirements and test methods for cobalt based dental casting alloys suitable for use in fabrication of removable dental applications.

Edelmetallfreie Dental-Gußlegierungen - Teil 1: Kobalt-Basis Legierungen (ISO 6871-1:1994)

Dieser Teil der ISO 6871 legt die Anforderungen und Prüfmethoden für Kobalt-Basis Dental-Gußlegierungen fest, die für die Herstellung von herausnehmbaren Zahnersatz geeignet sind. Er gilt nicht für Legierungen, die für Gerüste von Metall-Keramik-Zahnersatz gedacht sind.

Alliages dentaires non précieux à couler - Partie 1: Alliages à base de cobalt (ISO 6871-1:1994)

Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)

General Information

• Status: Withdrawn
• Publication Date: 22-Oct-1996
• Withdrawal Date: 14-Nov-2006
• ICS: 11.060.10 - Dental materials
• Technical Committee: CEN/TC 55 - Dentistry
• Drafting Committee: CEN/TC 55 - Dentistry
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 15-Nov-2006
• Completion Date: 15-Nov-2006
• Ref Project: SIST EN ISO 6871-1:2000 - Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)

Relations

• Corrected By: EN ISO 6871-1:1996/AC:1998 - Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)
• Effective Date: 22-Dec-2008
• Replaced By: EN ISO 22674:2006 - Dentistry - Metallic materials for fixed and removable restorations and appliances (ISO 22674:2006)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6871-1:2000
01-januar-2000
Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)
Dental base metal casting alloys - Part 1: Cobalt-based alloys (ISO 6871-1:1994)
Edelmetallfreie Dental-Gußlegierungen - Teil 1: Kobalt-Basis Legierungen (ISO 6871-
1:1994)
Alliages dentaires non précieux a couler - Partie 1: Alliages a base de cobalt (ISO 6871-
1:1994)
Ta slovenski standard je istoveten z: EN ISO 6871-1:1996
ICS:
11.060.10 =RERWHKQLþQLPDWHULDOL Dental materials
SIST EN ISO 6871-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6871-1:2000

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SIST EN ISO 6871-1:2000

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SIST EN ISO 6871-1:2000

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SIST EN ISO 6871-1:2000

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SIST EN ISO 6871-1:2000

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SIST EN ISO 6871-1:2000
INTERNATIONAL
IS0
STANDARD
6871-I
First edition
1994-09-I 5
Dental base metal casting alloys -
Part 1:
Cobalt-based alloys
Alliages dentaires non prkieux 3 couler -
Partie 1: Alliages ;i base de cobalt
Reference number
IS0 6871-1:1994(E)

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SIST EN ISO 6871-1:2000
IS0 6871=1:1994(E)
Contents
Page
Scope . . . . . . . . . . . . . . . . . . . . . . .
Normative references
1
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
1
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .‘. 2
Preparation of test specimens . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Testing
Information and instructions . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Marking
Annexes
. . . . . . . . . . . . . . .*.*. 5
A Static immersion test
6
B Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 IS0 1994
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 the publisher.
International Organization for Standardization
Case Postale 56 l Cl-l-l 211 Geneve 28 l Switzerland
Printed in Switzerland
ii

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SIST EN ISO 6871-1:2000
63 IS0
IS0 6871=1:1994(E)
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, governmental
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 voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 6871-l was prepared by Technical Committee
ISO/TC 106, Dentistry, Subcommittee SC 2, Prosthodontic materials.
This first edition of IS0 6871-1, together with IS0 6871-2, cancel and re-
place the first edition of IS0 6871 published in 1987, of which they con-
stitute a technical revision.
IS0 6871 consists of the following parts, under the general title Dental
base metal casting alloys:
- Part 1: Cobalt-based alloys
- Part 2: Nickel-based alloys
Annex A forms an integral part of this part of IS0 6871. Annex B is for
information only.
. . .
III

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SIST EN ISO 6871-1:2000
IS0 6871=1:1994(E) 0 IS0
Introduction
Dental base metal casting alloys are suitable for use in fabrication of re-
movable dental appliances.
Specific qualitative and quantitative requirements of freedom from bio-
logical hazard are not included in this part of IS0 6871 but it is recom-
mended that, in assessing possible biological or toxicological hazards,
reference should be made to lSO/TR 7405121 and IS0 10993-W.
For other compositions the manufacturer has to present adequate evi-
dence of biological investigations in accordance with lSO/TR 7405 or
IS0 10993-1, and/or clinical investigations in order to assess the biological
response of the material.
Specific quantitative requirements for corrosion resistance are not in-
cluded in this part of IS0 6871. In order to get information of the kind and
amount of metal ions leached from the alloy, reference should be made
to lSO/TR 10271[3], reference number 14, Static immersion test, de-
scribed in annex A.

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SIST EN ISO 6871-1:2000
INTERNATIONAL STANDARD 0 IS0
IS0 6871=1:1994(E)
Dental base metal casting alloys -
Part 1:
Cobalt-based alloys
3.2 alloying element: Metallic or non-metallic el-
1 Scope
ements added to or retained by a basic metal for the
purpose of giving that metal certain special properties.
This part of IS0 6871 specifies requirements and test
methods for cobalt-based dental casting alloys suit-
3.3 impurity: Metallic or non-metallic elements
able for use in fabrication of removable dental ap-
present but which are not intentionally added to or
pliances. It does not apply to alloys intended for use
retained by a metal.
in fabrication of metal-ceramic dental restorations.
3.4 casting alloy: Alloy primarily intended for the
2 Normative references
production of castings.
The following standards contain provisions which,
3.5 base metal casting alloy: Casting alloy in which
through reference in this text, constitute provisions
cobalt or nickel is the basic metallic element.
of this part of IS0 6871. At the time of publication, the
editions indicated were valid. All standards are subject
3.6 cobalt-based dental casting alloy: Dental
to revision, and parties to agreements based on this
casting alloy in which cobalt is the constituent present
part of IS0 6871 are encouraged to investigate the
in the highest percentage by mass (main constituent).
possibility of applying the most recent editions of the
standards indicated below. Members of IEC and IS0
maintain registers of currently valid International
4 Requirements
Standards.
IS0 3696: 1987, Water for analytical laboratory use -
4.1 Composition
Specification and test methods.
The chemical composition of the casting alloy shall
IS0 6892: 1984, Metallic materials - Tensile testing.
meet the followina requirements:
ASTM-B 600-74, Recommended practice for descal-
Cobalt main constituent
ing and cleaning titanium and titanium alloy surfaces.
Chromium not less than
25 %(dm)
3 Definitions
Molybdenum not less than
4 % (m/m)
For the purposes of this part of IS0 6871, the follow-
ing definitions apply.
Cobalt + Nickel + Chromium not less than
85 % (m/m)
3.1 alloy: Metallic substance consisting of a mixture
of the basic metallic element (the element predomi-
Constituents of the al oy in excess of 20 % (&vz) shall
nating by mass) and other elements such as alloying be within 2 % (m/m) of the value stated [see
elements and impurities. clause 8 b) and 9.2d)]. Constituents in excess of
1

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SIST EN ISO 6871-1:2000
IS0 6871=1:1994(E)
2 % (m/m) but not in excess of 20 % (m/m) shall be
within 1 % (m/m) of the value stated [see clause 8 b)
Table 1 - Mechanical properties
and 9.2d)]. The percentage of nickel shall not be
greater than the percentage indicated on the package
Proof stress of
Percentage elongation
label or insert (see clause 8).
non-proportional
after fracture
elongation, R,0,2
Other compositions with cobalt as the basic metallic
MPa %
el
...