ISO/R 185:1961

UDC 889.13
Ref. No.: IS01 R 185-1961 (E)
IS0
I N T E R N AT1 O N A L O R G A N I ZAT I ON FO El S TA N D A R D I Z AT I ON
IS0 RECOMMENDATION
R 185
CLASSIFICATION OF GREY CAST IRON
1st E D IT1 ON
November 1961
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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 185, Classijîcation of Grey Cast Iron, was drawn up by
Technical Committee ISO/TC 25, Cast Iron, the Secretariat of which is held by the British
Standards Institution (B.S.I.).
Work on this question by the Technical Committee began in 1955 and led, in 1959,
to the adoption of a Draft IS0 Recommendation.
In June 1959, this Draft IS0 Recommendation (No. 220) was circulated to all the
IS0 Member Bodies for enquiry. It was approved, subject to some amendments, by the
following Member Bodies :
Australia Greece Romania
Belgium Spain
Hungary
Burma India Sweden
Chile Italy Switzerland
United Kingdom
Czechoslovakia Netherlands
New Zealand U.S.A.
Denmark
Finland Norway
Germany Portugal
One Member Body opposed the approval of the Draft: France.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in November 1961, to accept it as an IS0 RECOMMENDATION
provided the text was completed by the last sentence of the Note preceding Table 2.
I
-2-

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CDU 669.13 1.6.001.33 Rif. NO : lSO/R 185-1961/Al-l969(F)
Amendement 1 a la Recommandation ISO/R 185-1961
Septembre 1969
CLASSIFICATION DE LA FONTE GRISE
Chapitre 4 - CLASSIFICATION DE LA FONTE GRISE
Corriger la Note au-dessus du Tableau 2 comme suit :
“NOTE. - Le type d’éprouvette h utiliser pour obtenir les résultats d’essai doit faire l’objet d’un accord entre acheteur
et fournisseur.”
HIS TO RI QUE
n
V
La modification de la Note au-dessus du Tableau 2 de la Recommandation EO/R 185 -1961 fut décidée en
1962 par le Comité Technique ISOlTC 25 et un projet d’Amendement fut adopté.
Ce projet d’Amendement à la Recommandation ISO/R 185-1961 fut directement soumis, conformément à
la procédure accélérée, au Conseil de l’BO qui décida, en septembre 1969, de l’accepter.

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lSO/ R 185-1981 (E)
IS0 Recommendation R 185 November 1961
CLASSIFICATION OF GREY CAST IRON
1. SCOPE
1.1 This IS0 Recommendation refers to the classification of grey cast iron according to its
tensile strength.
2. MACHINED STANDARD TENSILE TEST PIECES
2.1 The test bar is cast as a cylindrical bar of 30 + 3 mm ( 1.2 + 8::; in) diameter, the length
being dependent on the type of the test piece (A or B) and whether the machined test
piece is to have plain or screwed ends.
2.2
The machined standard tensile test piece, Type A, is of the dimensions shown in Figure 1
and Table 1. The machined standard tensile test piece, npe B, is of the dimensions
shown in Figure 2 and Table 1.
If plain ends are used, the diameter should be 23 mm (0.9 in) minimum. If screwed ends
are used, the diameter at the root of the thread should be 25 mm (0.98 in) minimum; the
top diameter
...