EN-GJS-600-3 | 5.3201 with tendency to chilling

EN-GJS-600-3 is a nodular graphite cast iron with a tensile strength of at least 600 MPa and 3% elongation at break. The typical microstructure consists of a pearlitic matrix with ferrite halos around the graphite pebbles. Here, the carbon is only partially solidified in the form of graphite pebbles (stable), with cementite (Fe3C, metastable) found in between instead. There, residual melt has initially solidified in the form of the so-called ledeburite eutectic (austenite and cementite); during further cooling, the austenite has then transformed into pearlite. The tendency to chilling can basically be triggered by too rapid cooling and/or, for example, a too low silicon content. It has a strong embrittling effect and is therefore normally undesirable unless it is specifically adjusted for particularly high hardness and wear resistance at surfaces (chill casting).