METHODS AND MATERIALS FOR THE PRESERVATION OF SMALL HARDWARE ITEMS-FINAL REPORT

摘要

Tests for improving the application of MIL-C-16173 Grade 1 corrosion preventive to small hardware items (i.e. screws, bolts, nuts, etc.) did not prove successful. Attempts to obtain adequate, quick drying and uniform coatings by spraying were unsatisfactory. Spin-drying techniques were more successful, but did not solve the problem of small parts sticking together.nA water-base compound, MIL-C-40084 (Ord), sought as a replacement for MIL-C-16173, Grade 1, showed satisfactory utility during application procedures. The water base compound, when applied to small hardware, produced a thin uniform coating which dried quickly and did not cause items to stick together.nThe protective ability of MIL-C-40084 (Ord) Compounds were evaluated in a three year storage program and it was found that equal protection was provided by either MIL-C-40084 (Ord) or MIL-C-16173, Grade 1 where adequately coated surfaces were compared, but greater over all protection was provided by MIL-C-40084 (Ord) compounds due to their ability to cover more adequately sharp edges and recessed areas.nIt is recommended that MIL-C-40084 (Ord) corrosion preventive replace MIL-C-16173, Grade 1 and MIL-L-3150 which are presently specified in MIL-P-11666. Also, it is recommended that MIL-C-40084 (Ord) corrosion preventives be considered for other military applications wherein MIL-C-16173, Grade 1 and MIL-L-3150 are being used.