NSN IS USED TO PURCHASE A MINIMUM OF 20CONTAINRS TO A MAXIMUM OF 59 CONTAINERS;AL 8SI 20BN CLAD;-212+45 UM(-70+325 MESH)CERTIFICATION MSRR 9507/66;HIGH QUALITY ABRADABLE COATINGS FOR USE IN THE COMPRESSOR SECTION OF JET ENGINES.TEMPREATURE RANGE OF 600-800DEG (F).SUPERIOR CORROSION RESISTANCE