50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks Oct 2, 2026
ISO
ISO/TC 155 Nickel and nickel alloys
International Standard
77.100 Ferroalloys | 77.120.40 Nickel, chromium and their alloys
This document specifies a spark atomic emission spectrometry method for the determination of carbon, sulfur, silicon, phosphorus, nickel, cobalt, chromium, copper contents in ferronickel. This method is applicable to the concentration ranges (mass fraction) in ferronickel: carbon 0.02 to 2.5, sulfur 0.002 to 0.28, silicon 0.10 to 4, phosphorus 0.005 to 0.040, nickel 14.0 to 42.0, cobalt 0.20 to 2.0, chromium 0.10 to 2.0, copper to 0.25.
IN_DEVELOPMENT
ISO/FDIS 4653
50.20
Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Oct 2, 2026