Carl Stokes served as the Cleveland, Ohioâs mayor from 1967 to 1971. He was one of the first African Americans to be elected mayor in a major U.S. city.
Tin and Lead There are many different metals in solder. Some of the metal an  individual may find in solder are: lead, tin, copper, and aluminum. answ2. Solders are still mad â¦ e of alloys of tin and lead, and with the addition of other metals to provide particular performance.Some solders contain no lead, and there exist solders of SnZn for soldering aluminum.oldering wire is made from an alloy of tin and lead. Typically, it  is 60% tin, and 40% lead. Soft solder is made of an alloy of tin and lead. Hard solders (for jewelry work) a usually made mainly our of the metal being worked (e.g. silver).
Solder is the small piece of alloyed metal that is melted in order to fuse two other pieces of metal together. The place where the metals are fused by solder is called a joint. The solder metal is of a lower melting temperature than the two pieces itâs fusing. Solder comes in three types: hard, medium, and easy. All three types have different melting temperatures. Hard solder melts at a high temperature, medium melts at a lower temperature, easy melts at an even lower temperature.