Trace element score

Characteristic value for assessing the effect of the complex influence of technically relevant trace/interfering elements for the precise production of nodular graphite cast iron.

In order to be usable, a material or material combination must have a trace element score Sb of < 1 (eq. 1) with a scattering of 0.065.

Eq. 1:

What is essential is to take into account the pearlite-stabilizing effect of most trace elements on the as-cast matrix. This influence is expressed by the pearlitic influence factor.