Etch resistant tin brass alloy

Abstract

An etch resistant tin brass alloy relates to the field of metallic material alloying and material corrosion prevention technology, which comprises the components of (by weight percentage) Cu 69.0-71.0%, Sn 0.8-1.3%, As 0.03-0.06%, Ti 0.01-0.10%, Ni 0.05-1.0%, Cr 0.01-0.50%, B 0.001-0.10%, balancing Zn and impurity whose total amount is less than 0.05%.

Description

technical field [0001] The invention relates to a corrosion-resistant tin-brass alloy, which belongs to the technical field of metal material alloying and material corrosion protection. Background technique [0002] The main grade of the existing tin-brass corrosion-resistant alloy is HSn70-1, and its components are as follows by weight percentage: Cu 69.0-71.0%, Sn 0.8-1.3%, the rest is Zn and the total amount is not more than 0.05%. Impurities. Although the tin-brass corrosion-resistant alloy has good erosion corrosion resistance and dezincification corrosion resistance, but in the presence of NH 4 + , Cl - When used under harsh water conditions such as high salt and high salt, its corrosion resistance is poor, and it is easy to be corroded, causing pipe leakage, which affects the use of steam turbines, condensers and other equipment that use tin-brass corrosion-resistant alloy tubes for condensation heat exchange. life. [0003] As environmental ...

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Problems solved by technology

When the existing HSn70-1 alloy is used in heavily polluted water, its service life is only 3 to 5 years, and frequent tube replacement not only reduces the efficiency of the unit, but also increases consumption, leading to an increase in cost. Therefore, the existing tin Brass corrosion-resistant alloys have been difficult to meet the requirements for the use of condenser tube alloy materials