"NSN IS USED TO PURCHASE A MINIMUM OF 20CONTAINRS TO A MAXIMUM OF 59 CONTAINERS;65 MGZRO, 26NI 7CR 2AL BLEND;-90+11 UM (-170 MESH +11 UM);RA 62 HARDNESS;CERTIFICATION MSRR 9507/20;TEXTURE/FINISH AS-SPRAYED 350;COATING NUMBERS P441-10 AND P441-11;MAGNESIUM ZIRCONATE AND NICKEL-CHROMIUM ALLOY POWDER BLEND.USED TO PRODUCE THE INTERMEDIATE COATING OF A THREE-PART GRADED THERMAL BARRIER COATING SYSTEM.USUALLY USED IN CONJUNCTION WITH A METCO 443NS NICKEL-CHROMIUM ALLOY ALUMINUM BASECOAT AND METCO 210NS MAGNESIUM-ZIRCONATE FINAL COAT"