SPECIFICATION RT-1140 ISSUE 6 Page 3
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4.3.1 Dimensions and Longitudinal Change
Measure three 6-inch (150 mm) specimens of tubing, as supplied, for length ± 1/32 inch (± 1 mm), and inside
diameter in accordance with ASTM D 2671. Condition the specimens for 10 minutes in a 175 ± 5°C (347 ±
9°F) oven, cool to 23 ± 3°C (73 ± 5°F) and remeasure. Prior to and after conditioning, the dimensions of the
tubing shall be in accordance with Table 1 and the longitudinal change shall be in accordance with Table 3.
Calculate the longitudinal change as follows:
C =
L
1
- L
0
L
0
x 100
Where: C = Longitudinal Change [Percent]
L
0
= Length Before Conditioning [Inches (mm)]
L
1
= Length After Conditioning [Inches (mm)]
4.3.2 Tensile Strength, Tensile Stress and Ultimate Elongation
Test three specimens of tubing for tensile strength and ultimate elongation in accordance with ASTM D 2671,
and for tensile stress in accordance with ASTM D 412. For tubing sizes 3/8 and smaller, the specimens shall
be full sections of tubing; for sizes 1/2 and larger, the specimens shall be cut with die C of ASTM D 412.
The specimens shall have 1-inch (25-mm) bench marks, centrally located. The testing machine shall have an
initial jaw separation of 1 inch (25 mm) for full sections of tubing and 2 inches (50 mm) for die-cut
specimens. The rate of jaw separation shall be 20 ± 2 inches (500 ± 5 mm) per minute.
4.4 REJECTION AND RETEST
Failure of any sample of tubing to comply with any one of the requirements of this specification shall be
cause for rejection of the lot represented. Tubing which has been rejected may be replaced or reworked to
correct the defect and then resubmitted for acceptance. Before resubmitting, full particulars concerning the
rejection and the action taken to correct the defect shall be furnished to the inspector.
5. PREPARATION FOR DELIVERY
5.1 PACKAGING
Packaging shall be in accordance with good commercial practice. The shipping container shall be not less
than 125-pound-test fiberboard.
5.2 MARKING
Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's
name, part number, specification number, lot number, date of manufacture and expiration date.