"NSN USED TO PURCHASE A MINIMUM OF 1 CONTAINER TO A MAXIMUM OF 2 CONTAINERS;CERTIFICATION PWA 1337,GE B50TF56,RR 9507/5 AND AVCO M 3951 B;RB 60-80 HARDNESS;3000 PSI MINIMUM STRENGTH ON SMOOTH SURFACE AND 5000 PSI MINIMUM STRENGTH ON ROUGHENED SURFACE;COARSE AS SPRAYED GRIND FINISH EXCELLENT;ALUMINUM CLAD NICKEL COMPOSITE POWDERTHAT REACTS EXOTHERMICALLY DURING SPRAYING TO SELF-BOND ONTO CLEAN, SMOOTH METALLIC SURFACE.YIELDS DENSE, TIGHTLY ADHERENT, OXIDATION RESISTANT COATINGS OF HIGH STRUCTURAL INTEGRITY.RESISTANT TO TEMPREATURES AS HIGH AS 2100DEG (F)"