COBALT- OR IRON-BASE ALLOY EXCELLENT IN THE RESISTANCE TO CORROSION FROM MOLTEN LEAD-FREE SOLDER AND MEMBERS OF LEAD-FREE SOLDERING APPARATUS WHICH ARE MADE OF THE ALLOY

摘要

The invention provides a Co-base alloy excellent in the resistance to corrosion from lead-free solder, particularly from molten lead-free Sn-Ag solder, and members of lead-free soldering apparatus which are made of the alloy. A Co-base alloy having a composition which contains Cr: 20.0 to 35.0%, Fe: 0.1 to 25.0%, C: 0.01 to 1.20%, Mn: 0.5 to 2.0%, and Si: 0.1 to 2.0%, and further contains, if necessary, (a) Ni: 1.0 to 24.0%, (b) La: 0.01 to 0.15% and/or Ce: 0.01 to 0.15% or (c) Mg: 0.001 to 0.05%, or two or more of (a) to (c), the balance being Co and unavoidable impurities; and members of lead-free soldering apparatus which are made of the alloy.