At present, copper alloy is the most suitable main material for home use. Because copper ions have a certain bactericidal effect, bacteria cannot produce antibodies, so the inner wall of copper faucet will not breed bacteria, which is unmatched by other materials, which is why many brands choose copper as faucet now. Brass in copper alloys is a combination of copper and zinc. It has good mechanical properties, wear resistance and corrosion resistance, so it has become the first choice for faucet materials.
Brass can be divided into many types because of its different copper content. At present, most faucets are made of H59 copper, that is, brass with copper content between 57% and 6 1%. In fact, some international bathroom brands even use H62 copper to produce faucets, because H62 copper has higher copper content and better corrosion resistance than H59 copper.
Besides copper and zinc, brass also contains trace amounts of lead (less than 0.5%). The faucet was exposed to lead poisoning, and everyone thought it was caused by the lead in brass itself, but left a dose saying that all the poisoned people were hooligans. At present, the national standard setting of lead content in faucets is that as long as the lead precipitation does not exceed 5μg/L, it will not threaten human health. In fact, the standard H59 copper does not need to worry about this problem.
However, most faucets with excessive lead precipitation in the market are not standard brass, but are shoddy with zinc alloy or roughed with recycled waste copper, which has quality problems.