BS EN ISO 3908:2009

Hardmetals. Determination of insoluble (free) carbon. Gravimetric method. | Status: Current, Under review

1 Scope This International Standard specifies a gravimetric method for the determination of the mass fraction of insoluble (free) carbon in carbides and hardmetals. This method is applicable to

• — carbides of hafnium, molybdenum, niobium, tantalum, titanium, vanadium, tungsten and zirconium,
• — mixtures of these carbides and binder metals, free of lubricant, and
• — all grades of presintered or sintered hardmetals, produced from these carbides,

having a mass fraction of insoluble carbon between 0,02 % and 0,5 %.