This standard applies to the designation method of ferroalloy products. All ferroalloy products listed in national standards and professional standards (ministry standards) should be designated according to the provisions of this standard. Note: The grades of ferroalloy products not specified in this standard should be compiled according to the principles specified in this standard.
GB/T 7738-1987 history
2008GB/T 7738-2008 Notations for designation of ferroallys
1987GB/T 7738-1987 Notations for designation of ferroalloys