Who knows in the material of copper machine has a 59--3A and what is the meaning of 59---1A, and 58 and 59 copper have what distinction, it is the different material? What is the difference between them? Thanks for waiting.
The mass percentage of 59-1A copper content is 59%, and the mass percentage of lead content is 1%.
59 is the percentage of copper content, and 1 and 3 are the mass percent of lead content58, 59, that is, the copper content is different
The mass percentage of 59-3A copper content is 59%, and the mass percentage of lead content is 3%.The mass percentage of 58-1A copper content is 58%, and the mass percentage of lead content is 1%.
