合***号产品种类级别厚度(mm)当磁场强度峰值为0.4A/m(1J791J85为0.1A/m)时在不同频率下的弹性磁导率μ60Hz400Hz1KHzMH/M不小于1J50冷轧带材Ⅱ0.103.93.80.203.83.00.355.03.81J79冷轧带材Ⅱ0.1022.5150.2012.57.50.35258.81J85冷轧带材Ⅱ0.1031.3250.2023.8100.353812.5)