A-A-54271
Hardness. The cannula shall have a Rockwell Hardness B scale (HRB) of 85 to 95 when tested in accordance with ASTM Designation E18 or E92 whichever is applicable. Conversion of hardness values shall be in accordance with ASTM Designation E140.
Style, design and dimension. The cannula shall be in accordance with Defense Personnel Support Center (DPSC) Drawing No. 24083.
The stylet shall fit smoothly within the outer tube, shall blend through the distal opening of the outer tube without completely falling through, and shall not bind into the opening.
Finish. The finish of the cannula shall be mirror, satin or matte. The matte finish shall exhibit a uniform nondirectional surface texture equivalent to that produced by lightly blasting the prepared surface with fine abrasives under pressure.
Passivation. The cannula shall be properly passivated
Corrosion resistance. For components fabricated from Class 3, no signs of corrosion shall appear when subjected to the Boil Test in accordance with ASTM Designation F1089. For nickel or chromium plated components, no signs of corrosion shall appear when salt spray tested in accordance with ASTM Designation B117.
Identification marking and labeling. Cannulas shall be legibly marked with the contractor’s name or trademark and the word “stainless”. Foreign manufactured cannulas shall bear the name of the country of origin.
Performance interchangeability. The outer and inner cannula and stylet shall be interchangeable with all same size component parts, regardless of manufacturer, and shall have a proper fit, with mating parts. The same interchangeability and fit requirements shall also exist with the same size adapter.
Workmanship. The cannula shall be free from cracks, pits, burrs, sharp edges, scale rough areas, corrosion or any defects which detract from its appearance or impair its serviceability.
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