90.20 Standard under periodical review Jul 15, 2026
ISO
ISO/TC 17/SC 1 Methods of determination of chemical composition
Technical Specification
77.080.20 Steels
Published
ISO/TS 13899-1:2005 specifies a method for the determination of tungsten content in steel by means of inductively coupled plasma atomic emission spectrometry.
PUBLISHED
ISO/TS 13899-3:2005
90.20
Standard under periodical review
Jul 15, 2026