MIL-STD-1500C
b. Type II - (see para 5.3.1.1)
c. Type III - (see para 5.3.1.2)
WARNING
PROVIDE ADEQUATE VENTILATION WHEN USING IRIDITE AND/OR PHOSPHATING SOLUTIONS. AVOID SKIN AND EYE CONTACT.
5.3.1.1 Type II.
a. Immerse in Type II chromating solution (Iridite No. 8P or equivalent)
for 15 to 30 seconds.
b. Rinse thoroughly in tap water. An additional rinse in warm water (60°C
maximum {140°F}) may be used to facilitate drying.
c. See para 5.4.
5.3.1.2 Type III.
a. Immerse parts in Type III (SAE-AMS-QQ-P-416) phosphating solution for 15 to 30 seconds.
b. Rinse thoroughly in tap water. An additional rinse in warm water
(60°C maximum {140°F}) may be used to facilitate drying. c. See para 5.4.
5.4 Inspection. Inspection shall be in accordance with the production control inspection and test in SAE-AMS-QQ-P-416 and this standard.
5.5 Process Controls. Solutions and equipment used in the plating process shall be checked periodically and maintained in accordance with the requirements of this process standard.
5.6 Qualification Embrittlement Test. The processor shall demonstrate the ability to provide cadmium-titanium plating, which meets the requirements of paragraph
4.6 of this standard as follows:
a. Four round notched 4340 steel specimens per ASTM F519, Type 1a.1 or 1a.2 shall be prepared.
b. The specimens shall be prepared for plating and plated in accordance with all of the requirements of this specification. During plating the specimens shall be mounted symmetrically on a rack by themselves. All areas of the rack except the
contact area shall be coated with a suitable maskant. An ammeter having a sensitivity of
0.5 amperes or better shall be connected in the plating circuit near the specimens being plated. The ammeter shall either be built into the rectifier being used or shall be inserted between the rectifier and the cathode. The specimens shall be plated at S1.6 A/dm3 (15 amperes/ft3) to a thickness of 0.020 mm {0.0008 inch). The specimens shall be baked
for 12 hours at 190 ± 14°C (375 ± 25°F) within four (4) hours of removal from the bath.
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