NSN USED TO PURCHASE A MINIMUM OF 80CONTAINRS TO A MAXIMUM OF 159CONTAINRS;CERTIFICATION GE B50TF142;SUITABLE FOR HIGH TEMPREATURE BRAZING OPERATIONS IN THE RANGE OF 2100-2150DEG (F). THIS MATERIAL IS A BLENDED MIXTURE OF A NICKEL-CHROMIUM-SILICON POWDER (90%) WITH A NICKEL-SILICON POWDER CONTAINING BORON. OFTEN UTILIZED FOR VACUUM BRAZING OPERATIONS