Any lot of steel bars which meets the requirements of the preceding paragraph shall be accepted, if none of the bars which break in the eye show an ultimate strength, elastic limit, or elongation less than that specified for the body of the bar, unless one fourth (1/4) of the full-sized samples so tested break in the eye. In case of failure to meet any of these requirements, the lot from which the sample bars were taken will be rejected.

All full-sized sample bars which break at less than the ultimate strength specified, or do not otherwise fill the specifications, shall be at the expense of the Contractor; unless, in case of those that break in the eye, he shall have made objection in writing to the form or dimensions of the heads before making the eye-bars. All others shall be paid for by the purchaser at the contract price of finished metal-work on cars at shops, less the scrap value of the broken bars.

PIN METAL

Pins up to six (6) inches in diameter may be rolled, but above that diameter they shall be forged. The rounds from which the pins are to be turned must be true, straight, and free from all injurious flaws or cracks. All forged pins shall be reduced from a single bloom or ingot until perfect homogeneity is secured throughout the whole mass. The blooms shall have at least three (3) times the sectional area of the finished pins. No forging shall be done below a red heat.

VARIATION IN WEIGHT.

Except in the case of sheared plates ordered to gauge, a variation in cross-section or weight of rolled material of more than two (2) per cent from that specified may be cause for rejection. For the said sheared plates the permissible excess variation shall run from four (4) per cent for plates five eighths (5/8) of an inch or more in thickness to eight (8) per cent for plates three eighths (3/8) of an inch or less in thickness, the variations for intermediate thicknesses being directly interpolated.