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).
One of the most common solder alloys in use is composed of 60 percent tin and 40 percent lead. An alloy of 63 percent tin and 37 percent lead is commonly used for electrical work. Prior to 1986, the most popular solder used for joining plumbing pipes in the United States was an alloy made of half tin and half lead.