GREY IRON ALLOY AND BRAKE DISC CONTAINING GREY IRON ALLOY.

摘要

The invention relates to a grey iron alloy containing (in wt%): C: = 4.2 %, Si: 1.30 %, Mn: 0.4 - 0.8 %, Nb: 0.05 - 0.4 %, Cr: = 0.4 %, Cu: = 0.7 %, V + Ti + Mo: = 0.4 %, P: 0.05 %, S: 0.1 %, the remainder comprising Fe and naturally occurring impurities, and the degree of saturation Sc, expressed as %C/(4.26 - 0.317*(%Si) + 0.027(%Mn) - 0.3(%P)) 1.