90.93 Standard confirmed Jan 12, 2023
ISO
ISO/TC 119/SC 2 Sampling and testing methods for powders (including powders for hardmetals)
International Standard
77.160 Powder metallurgy
ISO 4496:2017 specifies methods for determining, in iron, copper, tin and bronze powders, the approximate content of non-metallic materials which are insoluble in the ordinary mineral acids.
The insoluble matter referred to is generally considered to be acid-insoluble silica and silicates, carbides, alumina, clays or other refractory oxides which are either present in the raw material from which the powders are manufactured or introduced during the manufacturing process.
WITHDRAWN
ISO 4496:1978
PUBLISHED
ISO 4496:2017
90.93
Standard confirmed
Jan 12, 2023