"NSN USED TO PURCHASE A MINIMUM OF 160 CONTAINERS AND UP;CERTIFICATION PWA 1337,GE B50TF56,RR 9507/5 AND AVCO M 3951B;RB 60-80 HARDNESS;3000 PSI MINIMUM STRENGTH FOR SMOOTH SURFACE AND 5000 PSI MINIMUM STRENGTH FOR ROUGHENED SURFACE;COARSE,AS SPRAYED GRIND FINISH EXCELLENT;ALUMINUM CLAD NICKEL COMPOSITE POWDER THAT REACTS EXOTHERMICALLY DURING SPRAYING TO SELF BOND ONTO CLEAN, SMOOTH METALLIC SURFACES.YIELDS DENSE,TIGHTLY ADHERENT,OXIDATION RESISTANT COATINGS OF HIGH STRUCTURAL INTEGRITY.RESISTANT TO TEMPERATURES AS HIGH AS2100DEG (F)"