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Reg. 258

Selection of Test Pieces*

a)

From the test plate or plates on each longitudinal seam, test pieces shall be selected for the following tests, the specimens being cut out as shown in Figs. 16 and 17 and stamped by the Inspecting Officer for identification:-

i) One tensile test specimen for the welded joint
ii) One all-weld metal tensile test specimen
iii) Two bend test specimens.
iv) Three notched-bar impact test specimens.
v) One specimen for micro and macro examination.
___________________________________________________________
*Examples showing appropriate dispositions of the test pieces in the test plates are shown in figures 16 and 17.

The remainder of each set of test plates shall be retained for any re-tests required. Any specimen for re-test shall be cut off from the same set of test plate, as the original specimen.
b)

Surfaces of tensile, bend and impact test specimens corresponding with the outside or inside of the drums shall be only lightly dressed so that the rolled surface of the parent metal is not wholly removed, except that where the rolled surfaces of the abutting plates are not level with one another, one plate may be machined at each face of the weld provided the depth of metal removed does not exceed 0.8 mm.

For Fig 16
i) Tensile test for joint.
ii) Tensile test for all-weld metal.
iii) Bend test, outer and inner surfaces of plate (at weld).
iv) Notched-bar impact test specimen.
v) Micro and macro specimen.
 

For fig 17

i) Tensile test for joint.
ii) Tensile test for all-weld metal.
iii) Bend test, outer and inner surfaces of plate (at weld).
iv) a. Izod impact test, outer surface of plate.
b. Izod impact test, inner surface of plate.
v) Micro and macro specimen.
 
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