Q550NHB冶炼方法Q550NHB技术标准规范

一、牌号：Q550NHB二、Q550NHB交货状态：热轧、控轧、正火三、Q550NHB执行标准：GBT 4171-2008四、Q550NHB化学成分、熔炼分析CSiMnPSNiCrMoCuNbVTiAltZr≤0.16≤0.65≤2≤0.025≤0.030.12~0.650.3~1.25≤0.30.2~0.550…