Bronze contains 3% to 14% tin. In addition, elements such as phosphorus, zinc, and lead are often added.
It is the earliest alloy used by humans and has a history of use of about 4,000 years. It is corrosion-resistant and wear-resistant, has good mechanical and process properties, can be welded and brazed well, and does not produce sparks during impact. It is divided into processed tin bronze and cast tin bronze.