S222铁黄铜焊丝相当AWS化学成分（%）特性和用途SnSiCuZnMnFe黄铜气焊、碳弧焊、钎焊铜、白铜、钢ERBCuZn-C0.7~1.00.04~0.1557~59余量0.03~0.090.25~1.2)