The actual melting temperature of gold is 1000 degree1000° C. ButHowever, I noticed when pure gold wire whose diameter is 3 mills is put into the molten blob of solder (60% tin + 40% lead) which, which is at only 300 degree300° C, the gold melts and gets alloyed up with the molten tin.
How does the tin lead-lead alloy reduce the melting temperature of gold?