Low-lead brass alloy

Abstract

The invention relates to a low-lead brass alloy which comprises 62.5-63 wt% of copper, 0.16-0.24 wt% of lead, 0-0.02 wt% of stibium, 0-0.01 wt% of magnesium, 0-0.2 wt% of tin, 0.0005-0.0009 wt% of boron, 0.55-0.7 wt% of aluminum, 0.05-0.15 wt% of iron, 0-0.15 wt% of nickel, 0.09-0.12 wt% of arsenic, 0-0.005 wt% of zirconium, 0-0.01 wt% of impurity and the balance of zinc.

Description

technical field [0001] The present invention relates to a low lead brass alloy. Background technique [0002] Copper has excellent electrical conductivity and environmental friendliness, and bacteria that are harmful to humans cannot survive on its surface. In order to improve the performance of copper materials, other elements are added to copper, such as adding lead to copper-zinc-brass, which greatly improves the performance of copper. The cutting performance of brass, but lead has a damaging effect on human health and ecological balance, and the worldwide trend is also to limit the use of lead-containing alloys more and more. [0003] In addition, with the increasingly prominent environmental problems, the use environment is more severe, which reduces the surface strength of brass products, or even leads to perforation of brass pipes, which greatly shortens the service life of brass products and causes application problems. [0004] Therefore, it is necessary to provide...

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Problems solved by technology

[0002] Copper has excellent electrical conductivity and environmental friendliness, and germs harmful to humans cannot survive on its surface. In order to improve the performance of copper materials, other elements are added to copper, such as adding lead to copper-zinc brass, which greatly improves The cutting performance of brass, but lead has a destructive effect on human health and ecological balance, and the worldwide trend is also to impose more and more restrictions on the use of lead-containing alloys

[0003] In addition, as environmental problems become more and more prominent, the use environment is more severe, which reduces the surface strength of brass products, or even causes brass tubes to perforate, greatly shortens the service life of brass products, and causes problems in application

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