MIL-STD-186 Protective Finishing For Army Missile Weapon SystemsThis standard establishes the minimum requirements for procedures, materials, and systems for cleaning, plating, painting and finishing metals, wood, electronic materials, parts and assemblies for rockets, guided missiles, and components to protect them from deterioration.

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Group No. (See Table X)

Metal or Alloy Description

6

Commercial yellow brasses and bronzes. Admiralty metal.

Cartridge brass, ASTM 819.

Commercial brass, ASTM 836, SAE AMS 4860. High copper yellow and naval brass.

7

Medium copper leaded brass and low copper brass compositions Commercial brass ASTM-816, ASTM-816M, ASTM-8124. Commercial yellow brass, SAE AMS 4842.

Manganese bronzes, ASTM 8138

Naval brasses, ASTM 821, ASTM-821M and QQ-8-639

Die-cast brasses, ASTM 8 176. Muntz meal and Tobin bronze

8

18  ±  2% corrosion resistant chrome-steels (passivated) within the AISI 300 and 400 series, SAE-AMS-QQ-S-763, ASTM A240, ASTM A666, ASTM A 580, ASTM A 313.

9

12  ±  2% corrosion resistant chrome-steels (passivated) within the AISI 400 series SAE AMS-QQ-S-763, MIL-C-24707/6, ASTM A240, and ASTM A693

Chromium plate, SAE-AMS-QQ-C-320, MIL-DTL-14538

Tin and tin plate products ASTM 8545, ASTM 8339, ASTM A623, ASTM A623M, ASTM A624, ASTM A624M, ASTM A630

10

Terneplate, QQ-T-201.

Tin-lead solders, ANSI J-STD-004, ANSI J-STD-005, ANSI J- STD-006.

11

Electrical lead.

Sheet lead, QQ-L-201. Pig lead, QQ-L-171. Calking lead, QQ-C-40. Lead alloys.