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UDC 669.14: 620.11
I N TERN AT I O N A L ORGANIZATION FOR STAND AR D I Z AT1 O N
IS0 RECOMMENDATION
.
R 377
SELECTION AND PREPARATION OF SAMPLES
AND TEST PIECES FOR WROUGHT STEEL
1st EDITION
A ug ust 1964
COPYRlGHT RESERVED
of IS0 Recommendations and IS0 Standards
The copyright
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 377, Selection and Preparation of Samples and Test Pieces
for Wrought Steel, was drawn up by Technical Committee ISO/TC 17, Steel, the Secretariat of
which is held by the British Standards Institution (BSI).
Work on this question by the Technical Committee began in 1953 and led, in 1962, to the
adoption of a Draft IS0 Recommendation.
In October 1962, this Draft IS0 Recommendation (No. 527) was circulated to all the
It was approved, subject to a few modifications of an editorial
IS0 Member Bodies for enquiry.
nature, by the following Member Bodies :
Australia Germany Portugal
Romania
Austria Hung a r y
Spain
Belgium Iran
Ireland Sweden
Burma
Canada India Switzerland
Chili Italy Turkey
Czechoslovakia Japan United Kingdom
U.S.A.
Denmark Netherlands
New Zealand U.S.S.R.
Egypt
Norway Yugoslavia
Finland
France Poland
No Member Body opposed the approval of the Draft.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in August 1964, to accept it as an IS0 RECOMMENDATION.
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I
ISO/R 377 - 1964 (E)
IS0 Recommendation R 377 August 1964
SELECTION AND PREPARATION OF SAMPLES
AND TEST PIECES FOR WROUGHT STEEL
1. SCOPE
The object of this IS0 Recommendation is to define the operations by which test pieces for
mechanical tests and samples for chemical analysis are obtained from a wrought steel product.
The product from which test pieces for mechanical tests are selected can be either one of the
products presented for acceptance, or a sample-product, depending upon the requirements of
the order.
AND PREPARATION OF SAMPLES AND
2. SELECTION
TEST PIECES FOR MECHANICAL TESTS
2.1 General
The requirements specified vary according to whether the tests are used to determine the
characteristics :
of the condition at the time of delivery, or
of some other condition, different from the delivery condition.
The tests should be carried out in accordance with the test methods specified in the material
specification.
2.2 Definitions
2.2.1 Sample. Material taken from a product for the purpose of producing one or more test
pieces.
In certain cases, the sample may be the product itself.
Test piece. Part of the sample, with specified dimensions, unmachined or machined,
2.2.2
and suitably prepared for the test.
In certain cases the test piece may be the sample itself.
2.2.3 Test. Sequence of operations to which the test piece is subjected to determine whether
the material meets the specified requirements.
2.2.4 Selection of the sample. Sequence of operations by which a sufficient quantity of mate-
rial is obtained for the provision of the test pieces necessary for the specified tests.
Preparation of the sample. Sequence of operations (cf.2.3.4.3) which provides a sample
2.2.5
in the condition required for the preparation of the test piece.
2.2.6 Preparation of the test piece. Sequence of operations on the test sample (cf. 2.2.4 and
2.2.5) by which a test piece is prepared for testing.
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ISO/R 377 - 1964 (E)
2.3 Method of selection and preparation of the sample
2.3.1 Location of the sample
The sample is taken so that the location and orientation of the test pieces in relation
to the product correspond to the requirements of the material specification.
The sample should be large enough to allow the manufacture of the test pieces necessary
to carry out the required tests.
2.3.2 IdentiJication of the sample
Each sample should be marked in such a manner that, after removal, is it still possible
to identify it with the product from which it was taken and, if required, its location and
Therefore, if, during the course of subsequent operations,
orientation in the product.
removal of the marks cannot be avoided, new marks should be made before the previous
marks are removed. These new marks should be made in the presence of the inspector,
if he so desires.
2.3.3 Test on product in delivery condition
2.3.3.1 CUTTING
Unless otherwise agreed, the sample should not in general be removed until after
the completion of all the mechanical or heat treatment operations that the product
has to undergo before delivery.
In exceptional cases where the saniple cannot remain attached to the product
until manufacture has been completed (for example, when plates are sheared
before annealing, the sample being taken from the shear scrap), the stage at which
the sample is cut from the product is specified by the material specification or by
special agreement. The treatments that the sample subsequently undergoes are
as far as possible the sanie as those given to the product; in particular, it is heat-
treated as a rule at the same time and under the Sam? conditions as the product
itself.
7 he cutting should be done in such a manner that it does not change the charac-
teristics of the part of the sample from which the test pieces are made.
2.3.3.2 STRAIGHTENING
When it is necessaiy to straighten a sample in order to mak? correct test pieces
from it, unless otherwise agreed, this should be done cold.
Straightening is not
considered as mechanical treatment within the meaning of clause 2.3.4.3.provided
it does not cause appreciable work hardening.
If, in exceptional cases, the straightening causes an appreciable change in the form
of the sample, the method of preparation should be agreed by the parties. Failing
agreement, new samples should be selected, using a method which obviates the
straightening.
Straightening is not permitted in samples which are to be used for the preparation
of test pieces for impact tests.
2.3.3.3 PREPARATION
The sample should not be subjected to any further manipulation or treatment.
2.3.4 Test on product in a given condition distinct from the delivery condition
2.3.4.1 CUTTING
The sample is cut from the product at the stage of manufacture specified by the
material specification.
Cutting may be done by any process, provided this does not cause a change remaining
after subsequent heat treatment. Where a change would occur, sufficient extra
material should be provided.
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ISO/R 377 - 1964 (E)
2.3.4.2 STRAIGHTENING
Straightening, before heat treatment, may be done either hot or cold.
2.3.4.3 PREPARATION
(a) Mech
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