2008HB 5220.1-2008 Methods for chemical analysis of superalloys. Part 1: Determination of carbon content by coulometric method
1995HB 5220.1-1995 Determination of Carbon Content by Coulometric Method for Chemical Analysis of Superalloys
1989HB 5421-1989 General principles and general provisions of chemical analysis methods for metallic materials
1970HB 5220.1-1982 Determination of Carbon Content by Coulometric Method for Chemical Analysis of Superalloys
HB 5220.1-1982 Determination of Carbon Content by Coulometric Method for Chemical Analysis of Superalloys was changed to HB 5421-1989 General principles and general provisions of chemical analysis methods for metallic materials.