63. Number and nature of tests

In order that iron screw stays may be approved of the same size as would be required for mild steel the iron shall withstand the following tests:

the bars as rolled are to be placed in batches of 20, and one tensile and two bend pieces shall be selected by a surveyor of ships from each batch; and

the bending test-pieces may be either of the bar as rolled or turned down to one inch diameter. One of the two bending test-pieces selected shall be lightly and evenly nicked on one side with a sharp cutting tool.