ASTM B153-91(1996)e1

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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e1
Designation: B 153 – 91 (Reapproved 1996)
Standard Test Method for
Expansion (Pin Test) of Copper and Copper-Alloy Pipe and
Tubing
This standard is issued under the fixed designation B 153; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
e NOTE—Editorial changes were made throughout in September 1996.
1. Scope 3. Apparatus
1.1 This test method establishes the requirements for the 3.1 Pin—The conical pin shall have an included angle of
expansion pin test for copper and copper-alloy pipe and tubing 60°, unless provided otherwise in the product specification.
in sizes up to and including 4 in. (102 mm) in outside diameter. The pin shall be made of carbide or tool steel that has been
hardened and ground to the prescribed angle and shall have a
NOTE 1—For tubes of sizes greater than 4 in. in outside diameter, the
smooth, polished surface. The size of the pin at the base shall
following flattening test, as described in the various pipe and tube
be suitable for the size of tubing being tested.
specifications, is recommended as a substitute for the pin expansion test.
3.2 Testing Machine—Any type of testing machine, either
For pipe and tubes over 4 in. in outside diameter in the annealed condition,
a 4-in. long shall be cut from the end of one of the tubes. This 4-in. long
hydraulically or mechanically operated, that will exert pressure
sample shall be flattened so that a gage set at three times the wall thickness
to expand the pipe and tubing on the pin at a uniform rate.
will pass over the pipe freely throughout the flattened part. The pipe or
tube so tested shall develop no cracks or flaws visible to the unaided eye
4. Test Specimen
as a result of this test. In making the flattening test, the elements shall be
4.1 The specimen of pipe or tubing to be tested shall be of
slowly flattened by one stroke of the press.
suitable length so that it can be expanded to the required
NOTE 2—The term “unaided eye,” as used herein, permits the use of
amount. Both ends shall either be faced square to the longitu-
corrective lenses necessary to obtain normal vision.
dinal axis in a lathe, or suitably prepared so as to have a smooth
1.2 The values stated in inch-pound units are to be regarded
surface free from scratches or burrs, which might interfere with
as the standard. SI values given in parentheses are for infor-
the test.
mation only.
1.3 This standard does not purport to address all of the
5. Procedure
safety concerns, if any, associated with its use. It is the
5.1 The test specimen shall be wiped clean to remove any
responsibility of the user of this standard to establish appro-
loose chips or dirt from the inside surface. The specimen shall
priate safety and health practices and determine the applica-
be well lubricated (Note 3) on the inside surface. The pin (3.1)
bility of regulatory limitations prior to use.
for use in the test, as prescribed in the specifications for the
material being tested, shall be wiped clean and free from dirt,
2. Significance and Use
grit, or chips, and coated with lubricant.
2.1 When properly performed and interpreted, the expan-
sion pin test will provide information with regard to t
...