Home / Standards / GB/T 5687.4-2016 GB/T 5687.4-2016 Active Nitrogen-bearing ferrochromium and nitride ferrochrome with high nitrogen content—Determination of nitrogen content—The distillation-neutralization titration method 氮化铬铁和高氮铬铁 氮含量的测定 蒸馏-中和滴定法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2016-06-14 Implementation 2017-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A