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73 IS : 432 ( Part II) - 1982
7.2 The wire shall withstand the reverse bend test specified in 8.3. 8. TESTS
8.1 All test pieces of wire shall
a) from the cuttings of lengths be selected by the purchaser or his of wires or ends of coils of wires, or b) if he so desires, from the coil or length of wire, after it has
been cut to the required or specified length and the test piece
taken from any part of it.
8.1.1 In neither case, the test piece shall be detached
length of wire, except in the presence of the purchaser
representative. from the coil or
or his authorised 8.1.2 Before test pieces are selected, the manufacturer
or supplier shall
furnish the purchaser
or his authorized representative
with copies of the
mill records giving the number of coils or bundles in each cast with sizes
as well as the identification
marks, whereby each coil or bundle of wire
can be identified.
Test - The ultimate tensile stress, proof stress and elongation
of wire shall be determined in accordance
with IS : 1521-1972*.
pieces shall be cut from the finished material and straightened,
The test pieces shall not be annealed or otherwise subjected to
Any slight straightening
which may be required shall be
8.3 Reverse Bend Test -Reverse
bend test shall be made on a test
piece cut from the finished product.
The test piece shall not be annealed
to any heat treatment
The test piece shall
cycle of reverse bend around
a pin of size
indicated below, without showing any sign of fracture when reverse bend
test is carried out in accordance
with the reqrlirements of IS : 1716-1971t:
Dia of Specittm It’ire Dio of Pin 7.5 mm and under
Over 7.5 mm
thl@thod Equal to diameter
Twice the diameter
of specimen for tensile testing of steel wire (fir,~! rcoision
for revers.e bend testing of steel wire I first rmision ). 6 IS : 432 ( Part II ) - 1982
8.4 Re-tests - Should any one of the test pieces first selected fail to pass
any of the tests specified in this standard,
two further samples shall be
selected for testing in respect of each failure.
Should the test pieces from
both these additional samples pass, the material
by the test
samples shall be deemed to comply with the requirements
of that particular test.
Should the test piece from either of these additional samples
fail, the material
by the test sample shall be considered as
not having complied with this standard.
8.5 Sampling - One tensile test and one bend
for every 5 tonnes or less in any parcel of wire.
9. DELIVERY, INSPECTION AND test each TESTING shall be made FACILITIES 9.1 Unless otherwise specified, general requirements
relating to the supply
of material, inspection and testin, 17shal! conform to IS : 1387-1967*.
9.2 No material shall be despstched from the manufacturer’s
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This document was uploaded on 10/01/2013.
- Fall '13