MIL-STD-171 Finishing Of Metal And Wood SurfacesThis standard establishes and updates general finish codes and serves as a general guide to the selection of suitable materials, procedures, and system for cleaning, plating, painting and otherwise finishing of metal and wood surfaces.

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MIL-STD-171F

TABLE XVII.  Wood preservative treatments. Finish

      No.                                                                 Requirements        

25.1           Discontinued

25.2

25.2.1

Immersion treatment.  Dress the wood part to correct cross sectional dimensions. The wood item of the finished wood parts thereof shall be completely immersed for a minimum of one minute in a solution of wood preservative PQ80 reduced with water down to 1.8 percent copper-8-quinolinolate as solution (see 5.4.5) or an emulsion of wood preservative M-GARD W550 (zinc naphthenate) reduced with water down to 3 percent zinc as metal (see 5.4.6).  Alternatively, the wood items or the finished wood parts thereof shall be completely flooded for a minimum of one minute in PQ80 or M- GARD W550 emulsion as to inundate all interior and exterior surfaces (when finished wood parts are dipped).  Care shall be exercised to assure complete coverage of all surfaces of the board.  After the dip treatment, the items must be air dried (or dried

for an appropriate time in a kiln or oven) for a period of 24 hours minimum in a well ventilated area allowing full air circulation around all surfaces of the wood.  The wood items must be dried prior to shipment.

Immersion treatment for wire-bound wood box assemblies.  Use M-GARD W550 only.

The treater/manufacturer will be required to obtain and provide all available safety, health and environmental data e.g., Material Safety Data Sheets.

25.3           Surface treatments.  Dress the wood part to correct cross sectional dimensions.

Apply one liberal coat of preservative solution.  Where practical, apply the solution by immersion for not less than on minute.  Otherwise brushing or flooding is acceptable. Allow the treated wood to air-dry or kiln-dry before it is painted.

25.4           Crack prevention. Soak in 25-35% by weight polyethylene glycol 1000 with water.

5.5  Paint finishes for wood.  Paint finished for wood are indicated in table XVIII.  The treatment of the wood in accordance with one of the systems indicated in table XVII prior to painting provides a more weather resistant finish for exterior exposure and is at the option of the procuring activity.  The wood shall not have a moisture content exceeding 20 percent of its oven dry weight.  Additional paint finishes for wood are indicated by table XIX.

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