Stay-Silv 15 is the industry standard for air-conditioning/refrigeration applications. Its melting range is useful in filling wider clearances while providing good service ductility. This filler metal is excellent for situations in which close fit-up does not exist, and where thermal expansion and service vibration are involved. Silver brazing alloy Excellent for situations where thermal expansion and service vibration are involved AWS A5.8 Class: BCuP5; Meets Fed. Spec. QQB6554A, Grade III, BCuP5 for QQB654A; RoHS compliant. 1 year warranty