MIL-STD-1500C
c. The specimens will be subjected to 200 hours of static loading at 75 percent of the ultimate notched tensile strength. The test shall be considered passed if all four (4) specimens meet the requirements of para 4.6.
d. Upon successful completion of the static load test, one of the notched tensile specimens shall be sectioned across the notch parallel to the axis of the specimen. Photomicrographs shall be taken on the notched area and examined for complete coverage of the notch with plating (use 80 - 100 magnification).
5.7 Process Control Embrittlement Acceptance Test. The process embrittlement acceptance test shall be one of the following two methods:
5.7.1 Method I, Hydrogen Detection Instrument Testing.
a. Hydrogen detection instrument testing shall be performed within the processor's facility by a certified operator according to the instrument manufacturer's instructions.
twice weekly.
b. Hydrogen detection instrument testing shall be conducted at least
5.7.2 Method II, Notched Tensile Test.
a. Two standard specimens of the type noted in para 5.6 shall be processed in conjunction with the plating of items in accordance with all of the requirements of this specification. The specimens shall be subjected to a sustained load test of 75 percent of the ultimate notched tensile strength of the material for 200 hours minimum and shall meet the requirements of para 4.6. Failure of any one of the specimens shall constitute failure of the test and production shall cease until the cause
of failure is determined and the bath is re-qualified. Acceptance of items completed after the last successfully completed acceptance test shall be withheld until the extent and cause of failure have been determined.
b. The test for embrittlement shall be conducted as often as deemed necessary with a maximum interval of every 30 calendar days. If embrittlement tests have not been performed in the 30 days proceeding the processing of a material batch, the bath must be re-qualified in accordance with para 5.6.
5.8 Titanium Content of Plating. The titanium content of the plate shall be determined in accordance with the following steps:
a. Plate the cadmium-titanium deposit at normal current density onto passive stainless steel, nickel, or a chrome plated base, so as to produce a non- adherent deposit.
WARNING
PROVIDE ADEQUATE VENTILATION WHEN USING SULFURIC ACID. WEAR PROTECTIVE RUBBER GLOVES AND CHEMICAL GOGGLES TO PREVENT SKIN AND EYE EXPOSURE.
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