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).
Soldering is the use of a conductive substance with a low melting point (solder) to electrically connect components together. It is frequently used to join wires to leads of components such as switches or to join components of all kinds to a printed circuit board. The primary tool used for applying solder is a soldering iron, a device whose metal tip heats to temperatures well above the melting point of solder. This is used to melt the solder and allow it to flow into a joint.