Pronunciation: [lˈɛdɪd bɹˈɒnz] (IPA) 
Leaded bronze is an alloy of copper, tin and lead. In terms of spelling, "leaded" is pronounced /ˈlɛdɪd/ with the first syllable stressed and the second syllable pronounced as "id." Though "bronze" may seem like it should be pronounced with a long "o" sound, it is actually pronounced /brɒnz/ with a short "o" sound like "on." So altogether, the correct pronunciation of "leaded bronze" is /ˈlɛdɪd brɒnz/.
Leaded bronze is an alloy composed primarily of copper, with the addition of lead as a secondary element. It is a type of bronze that contains a higher proportion of lead compared to other bronze alloys. The lead content typically ranges from 5% to 30%, while copper makes up the majority of the remaining composition.
Leaded bronze is highly valued for its excellent machinability and lubricity. The presence of lead enhances the alloy's ability to form lubricating films, which reduces friction between moving parts, making it suitable for applications where low friction and wear resistance are desired. This property also contributes to its self-lubricating characteristic, which allows it to function effectively without the need for additional lubrication.
In addition to its self-lubricating properties, leaded bronze displays good corrosion resistance, electrical conductivity, and thermal conductivity. These characteristics make it a versatile material that finds applications in various industries, including automotive, marine, electrical, and plumbing.
Despite its advantageous properties, there are concerns regarding the potential toxicity of lead. As a result, the use of leaded bronze has become regulated and limited in certain applications, especially those involving food, drink, or items that come in contact with human skin. However, in applications where its unique combination of properties is essential, such as in heavy machinery and bearings, leaded bronze continues to be a reliable and widely used alloy.
The word "leaded bronze" refers to a type of bronze alloy that contains a small percentage of lead. The etymology of the term can be analyzed as follows:
1. Bronze: The word "bronze" originates from the Old French word "brun" or "bronz", which means "brownish" or "coppery" in color. This Old French term was derived from the Vulgar Latin word "brundisium", referring to a brass (copper and zinc alloy) produced in the ancient town of Brindisi, Italy. Over time, the term "bronze" expanded in usage to encompass a broader range of copper-based alloys.
2. Lead: The term "lead" comes from the Old English word "lead", which has Germanic roots. It is derived from the Proto-Germanic word "*lauda-" or "*laudan-", meaning "lead".
