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Ref. No.: ISO/R 513 - 1966 (E)
IS0
I N T ERN AT1 ON A L ORGAN IZATl O N FO R STA N DARD I Z AT1 O N
IS0 RECOMMENDATION
R 513
APPL CATION OF CARBIDES FOR MACH NlNG
BY CHIP REMOVAL
DESIGNATION OF THE MAIN GROUPS
OF CHIP REMOVAL AND GROUPS OF APPLICATION
1st EDITION
November 1966
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The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 513, Application of Carbides for Machining by Chip Removal -
Designation of the Main Groups of Chip Removal and Groups of Application, was drawn up by
Technical Committee ISO/TC 29, Small Tools, the Secretariat of which is held by the Association
Française de Normalisation (AFNOR).
Work on this question by the Technical Committee began in 1953 and led, in 1961, to the
adoption of a Draft IS0 Recommendation.
In April 1964, this Draft IS0 Recommendation (No. 726) was circulated to all the IS0
Member Bodies for enquiry. It was approved by the following Member Bodies:
Australia Germany Poland
Austria Greece Portugal
Spain
Be 1 g i u m Hungary
India Sweden
Brazil
Chile Italy Switzerland
Colombia Japan Turkey
Czechoslovakia Korea, Rep. of United Kingdom
Denmark Netherlands U.S.S.R.
New Zealand Yugoslavia
France
Two Member Bodies opposed the approval of the Draft:
Canada
U.S.A.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in November 1966, to accept it as an IS0 RECOMMENDATION.
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ISO/R 513 - 1966 (E)
IS0 Recommendation R 513 November 1 966
APPLICATION OF CARBIDES FOR MACHINING
BY CHIP REMOVAL
DESIGNATION OF THE MAIN GROUPS
OF CHIP REMOVAL AND GROUPS OF APPLICATION
INTRODUCTION
The variety of ways in which different manufacturers produce carbides with differing characte-
ristics makes it impossible at the present time to standardize carbides graded in accordance with
these characteristics.
This IS0 Recommendation is therefore limited to a classification of carbides based on their
application and to a method of designation (colour marking and distinguishing symbols) for the
main types of chip removal and the groups of application which constitute this classification.
As indicated by the title, the present IS0 Recommendation relates solely to the application of
carbides for machining by chip removal.
All other uses (such as, for example, mining and other percussion tools, wire drawing dies, tools
operating by deformation of the metal, comparator contact tips, etc.) are therefore outside the
scope of this IS0 Recommendation.
1. CLASSIFICATION
Carbides are classified in the Table, page 6, according to their application, in main groups
of chip removal and these groups are subdivided into groups of application.
The groups of application are designated by a letter (P, M or K) indicating the relevant main
group followed by a distinguishing number and these groupings define the fields of application
within which carbide manufacturers may classify their own particular grades of carbides.
The letters P, M and K are thus intended exclusively for the general classification of carbides
and should never be used, either separately or in conjunction with another letter, as a commercial
designation for a particular grade.
Main groups of chip removal
1.1
This IS0 Recommendation provides for three main groups of chip removal, based on three
broad classes of material to be machined, as indicated in the Table, which are designated
by the letters P, M and K respectively.
; they
These letters are purely conventional and have no other significance in themselves
are not the initials of particular words.
Each of these groups has a corresponding distinctive colour marking, blue, yellow or red.*
1.2 Groups of ap
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