A-A-54294
Material.
Tip. The tip shall be fabricated of type 420 martensitic stainless steel, as specified in ASTM Designation F899, for composition only.
Connecting body. The connecting body shall be fabricated of Monel 400.
Nozzle. The nozzle shall be fabricated of polysulfone.
Transducer (magnetostrictive stack). The transducer shall be fabricated of Permanickel Alloy 300 strips. Each strip shall be 0.0095 to 0.0105 inch thick and 0.178 to 0.187 inch wide. The thickness of the transducer shall be 0.159 to 0.168 inch thick. The length of the transducer shall be 3-3/4 ± 1/16 inches.
Hardness. The operative tip shall have a Rockwell hardness of C40 to C45 as specified in ASTM Designation E18 (Rockwell) or E92 (Vickers) and E140.
Finish. The operative tips shall have a bright finish.
Identification marking. Each insert shall be legibly and permanently marked with the manufacturer’s name or trademark.
Workmanship. The nozzle, transducer and tips shall show no evidence of cracking, holes pitting, metal slivers, burrs, sharp edges or other defects which may detract from its appearance or impair its serviceability.
Unit. Each (EA). One insert of one style only, as specified, constitutes one unit. Each insert shall be individually packaged in a blister type plastic.
Quality Assurance Provisions.
Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contact or purchase order, the contractor may use his own or any facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections
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