  Non-destructive and reliable quality control methods are a key aspect to
designing, developing and manufacturing new materials for industrial
applications and new technologies. The measurement of the magnetic saturation
is one of such methods and it is conventionally employed in the cemented
carbides industry. We present a general quantum mechanics based relation
between the magnetic saturation and the components of the binder phase of
cemented carbides, which can be directly employed as a quality control. To
illustrate our results, we calculate the magnetic saturation of a binder phase,
85Ni15Fe binary alloy, using ab-initio methods and compare the theoretical
predictions to the magnetic saturation measurements. We also analyse interface
and segregation effects on the magnetic saturation by studying the electronic
structure of the binder phase. The excellent agreement between calculations and
measurements demonstrates the applicability of our method to any binder phase.
Since the magnetic saturation is employed to ensure the quality of cemented
carbides, the present method allows us to explore new materials for alternative
binder phases efficiently
