A-A-1206A
April 16, 1987
SUPERSEDING
A-A-1206
April 17, 1980
COMMERCIAL ITEM DESCRIPTION
COATED ABRASIVE CLOTH, CROCUS
The General Services Administration has authorized the use of this
Commercial Item Description in lieu of Federal Specification P-C-458.
This description covers coated abrasives comprised of a backing of cloth coated on one surface with crocus abrasive grain.
Salient characteristics:
Crocus cloth shall be of the following types:
Type I- Sheets, closed coat, 9 x 11 inches.
Type II- Roll, closed coat, 50 yards long, width as specified
Dimensional tolerances.
Type I- length, plus or minus 1/8 inch, width, plus or minus 1/16 inch.
Type II- length, plus 12 inches, minus “0”, width, plus or minus 1/16 inch
Abrasive. The abrasive shall consist essentially of ferric oxide (Fe2O3) and quartz. The abrasive shall be of the following fineness:
|
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U.S. Standard Sieve No. (conforming with ASTM E-11) |
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100 percent passing. |
140 |
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Not more than 20 percent retained. |
325 |
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