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UDC 621.791
IS0
I NT ERN AT1 ON AL ORGAN IZATl ON FOR STAN DA RD I ZATl ON
Is0 RECOMMENDATION
R 632
METHODS OF TEST FOR DETERMINING
WHETHER AN ELECTRODE
IS A DEEP PENETRATION ELECTRODE
1st EDITION
November 1967
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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 632, Methods of Test for Determining Whether an Electrode
is a Deep Penetration Electrode, was drawn up by Technical Committee ISO/TC 44, Welding,
the Secretariat of which is held by the Association Française de Normalisation (AFNOR).
Work on this question by the Technical Committee began in 1957 and led, in 1965, to the
adoption of a Draft IS0 Recommendation.
L
In October 1965, this Draft IS0 Recommendation (No. 844) was circulated to all the IS0
Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial
nature, by the following Member Bodies :
India Romania
Australia
Austria Ireland Spain
Belgium Israel Switzerland
Brazil Italy Sweden
Canada Japan U.A.R.
Chili Netherlands United Kingdom
Denmark New Zealand U.S.S.R.
Yugoslavia
France Portugal
Republic of South Africa
Germany
One Member Body opposed the approval of the Draft:
U.S.A.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Coun-
cil, which decided, in November 1967, to accept it as an IS0 RECOMMENDATION.
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IÇO/R 632 - 1967 (E)
IS0 Recommendation R 632 November 1967
METHODS OF TEST FOR DETERMINING WHETHER AN ELECTRODE
IS A DEEP PENETRATION ELECTRODE
FOREWORD
This IS0 Recommendation is one of a set which also comprises the following :
ISO/R 635, Code of Symbols for Covered Electrodes for Arc Welding of Mild Steels and
Low Alloy High Tensile Steels;
ISO/R 615, Methods for Determining the Mechanical Properties of the Weld Metal Depo-
sited by Electrodes 3.15 mm or more in Diameter;
ISO/R . . . *, Special Methods of Mechanical Testing for Determining the Coding for Deep
Penetration Electrodes.
1. SCOPE
This IS0 Recommendation describes methods for determining whether an electrode is a deep
penetration electrode (i.e. capable of being supplemented by the symbol P).
2. CHARACTERISTICS OF PARENT METAL
For the following tests, the parent metal should be killed or semi-killed mild steel, with a tensile
strength between 42 and 50 kgf/mm2 (26 to 32 tonf/in2) as rolled, and its chemical composition
should correspond to the following :
Carbon < 0.18 % Sulphur < 0.04% Phosphorus < 0.04%
3. DETERMINATION OF THE PENETRATION OBTAINED
...