SAE AMS 2410L:2018 pdf free

SAE AMS 2410L:2018 pdf free.Plating, Silver Nickel Strike, High Bake
Except as specified herein, all parts, except nuts, shall be heated to 935 to 965 °F (502 to 518 °C) after plating,rinsing, and drying and held at heat for 20 to 60 minutes. Heat up and cool down times should be minimized to prevent undesirable changes in the coating or substrate, e.g., oxidation or diffusional changes. Dwell times at 400 °F (204 °C) shall not exceed 7 hours during the heating and cooling thermal cycle. Above 400 °F (204 °C), the heating and cooling medium shall be a neutral or reducing atmosphere (except that hydrogen shall not be used) or shall be a neutral or nonoxidizing molten salt bath. If such heating would lower hardness or properties of parts below drawing limits or otherwise deleteriously affect the parts, heating shall be at the highest practicable temperature that will maintain specified properties. Heating of nuts is not required. When this thermal treatment starts within four hours after the parts have been removed from the plating bath, hydrogen embrittlement relief in accordance with 3.3.1 is not required.
Thickness of silver shall be as specified on the engineering drawing, determined nondestructively on parts or on test specimens as in 4.3.3 by a dimensional gaging method or in accordance with ASTM B499, ASTM B504, ASTM B568,ASTM E376, or other method acceptable to the cognizant engineering organization. If destructive testing is specified, it shall be determined in accordance with ASTM B487 or other method acceptable to the cognizant engineering organization.
Dimensional gauging (micrometers, verniers, pin gages, dial bore gages, height gages, or coordinated measuring machines, as examples) shall be maintained in accordance with ANSI/NCSL Z540.3. Resolution of the calibrated measuring instrument used, shall be not less than ten times more precise than the attribute being measured. All surfaces of the part, except those that cannot be touched by a sphere 0.75 inch (19 mm) in diameter, shall be plated to the specified thickness. Unless otherwise specified, surfaces such as holes, recesses, threads, and other areas where a controlled deposit cannot be obtained under normal plating conditions, may be under the specified limit provided they show visual evidence of plating coverage.SAE AMS 2410L pdf free download.