Lead-free free-cutting corrosion-resistant silicon-bismuth brass alloy

US8366841B2 · kind B2 · utility

Assignees

• Ningbo Xingaoda Advanced Metallic Materials Co., Ltd · CN
• Ningbo Aoda New Metal Materials Co., Ltd · CN

Inventors

• Feng Peng · Lo Wu, CN
• Baoping Xia · 丈亭镇, CN
• Jianping Liu · Longbeilingcun, CN
• Bin Feng · 丈亭镇, CN
• Changshun Zheng · 丈亭镇, CN
• Wenjian Liu · Beijing, CN

Key dates

• Filing date: Sep 23, 2011
• Grant date: Feb 5, 2013
• Expiry date: Sep 23, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C9/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A lead-free free-cutting corrosion-resistant silicon-bismuth brass alloy, including the following: between 60.0 and 65.0 wt % of Cu, between 0.6 and 1.8 wt % of Si, between 0.2 and 1.5 wt % of Bi, between 0.02 and 0.5 wt % of Al, less than 1.5 wt % of Ni+Mn+Sn, between 0.01 and 0.5 wt % of La—Ce alloy, between 0.002 and 0.02 wt % of B, with the remainder being Zn and inevitable impurities, wherein the total amount of impurities are no more than 0.5 wt %.