Patent ID: 10036479

Abstract:
A fusible plug employs an alloy which comprises 5-8 mass % of Sn, 31-34 mass % of Bi, 0.2-4 mass % of Sb, and a remainder of In. The alloy melts at approximately 66-70° C. The alloy may further contain at most 2.0 mass % of at least one element selected from strengthening elements consisting of 0.1-1.0 mass % of Cu, 0.1-1.0 mass % of Ge, 0.1-0.7 mass % of Ag, 0.1-0.6 mass % of Au, 0.2-0.6 mass % of Zn, 0.002-0.1 mass % of Ni, and 0.01-0.1 mass % of a lanthanoid.