A-A-105A
February 4, 1991
SUPERSEDING
A-A-105
Sept. 26, 1979
COMMERCIAL ITEM DESCRIPTION
POLISH, METAL, BRASS
The General Services Administration has authorized the use of this
Commercial Item Description in preference to Federal
Specification P-P-556 and Military Specification MIL-P-15422.
SCOPE AND CLASSIFICATION
This commercial item description covers two types of combination cleaner-polishers with tarnish preventative for use on brass and related alloys, copper, chrome, nickel.
Type I- Liquid
Type II- paste
Salient Characteristics.
Materials: Polishes shall contain suitable cleaning agents and firmly divided abrasives. Type I polish shall be a uniform liquid and shall not contain any sediment that cannot readily be put into suspension by thorough shaking. Type II polish shall be a uniform free from lumps and shall not show liquid separation.
Physical requirements Limits Test Methods
|
pH at 25oC 8.0 – 10.5 ASTM D 1172 (Type I undiluted. Type II as 50% dispersion in distilled water) Non-volatile matter, percent by weight Type I 25 min ASTM D 2834 Type II 30 min ASTM D 2834 Abrasive content, percent by weight 1 Type I 18 min Type II 25 min Passing through 200 mesh sieve 100 min 2 Flash point, oC 60 min ASTM D 92 |
Performance requirements Limits Test Methods
|
Tarnish removal, percent 75 min 3 Gloss retention, percent 75 min 4 Weight loss, percent of initial panel weight 0.01 max 4 |
Prohibited Ingredients5: The manufacturer shall certify that the cleaner-polishers shall not contain benzene, mineral acid, chlorinated hydrocarbon solvents, cyanides, grit, or other ingredients having a detrimental (i.e. corrosive , etc.) effect on metals or personnel.
Certification.: The contractor shall certify the product offered meets the salient characteristics of this description and that the product conforms to the producer’s own drawings, specifications, standards, and quality assurance practices and is the same product offered for sale in the commercial marketplace. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.
Preservation, Packaging, Packing, and Marking. Preservation, packaging, packing, and marking shall be as specified in the contract or order.
Notes: Purchasers should specify type and size.
DISTRIBUTION STATEMENT A: approved for public release
Distribution is unlimited.
FSC 7930
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