本发明公开了一种扶手或把手用抗菌不锈钢，属于不锈钢材料技术领域。该不锈钢的化学成分如下(重量％)：C：≤0.08；Si：≤0.50；Mn：≤1.00；P：≤0.05；S：≤0.05；Ni：8.0-12.0；Cr：18.0-20 .0；Cu：3.0-5.0；Ga：0.50-1 .50；余量为Fe；该不锈钢经过固溶热处理后，依靠Ga和Cu在基体中的过饱和固溶，Ga和Cu以固溶态和富镓相析出态两种形式存在。由于扶手或把手的使用环境一般是空气环境，与汗液接触时，富镓相的存在能够有效溶出镓离子，具有明显地抑制人手致病细菌的繁殖和传播，减少群发性细菌感染事件发生的几率。本发明抗菌不锈钢降低了由于致病细菌在人手间的传播风险，可广泛应用于生活装饰用的楼梯扶手、栏杆和门把手等。

The invention discloses an antibacterial stainless steel for handrails or handles, which belongs to the technical field of stainless steel materials. The chemical composition of the stainless steel is as follows (weight%): C: ≤ 0.08; Si：≤0.50； Mn：≤1.00； P：≤0.05； S：≤0.05； Ni：8.0-12.0； Cr：18.0-20 .0； Cu：3.0-5.0； Ga：0.50-1 .50； The residual is Fe; After solution heat treatment, GA and Cu exist in the form of solid solution and gallium rich phase precipitation depending on the supersaturated solid solution of GA and Cu in the matrix. Since the use environment of handrails or handles is generally air environment, when in contact with sweat, the existence of gallium rich phase can effectively dissolve gallium ions, which can significantly inhibit the reproduction and spread of pathogenic bacteria in human hands and reduce the probability of mass bacterial infection. The antibacterial stainless steel reduces the transmission risk of pathogenic bacteria in human hands, and can be widely used in stair handrails, railings, door handles, etc. for life decoration.