CAST IRON

摘要

FIELD: metallurgy.SUBSTANCE: cast-iron contains the following, wt %: carbon 3.8-4.0; silicium 1.8-2.0; manganese 0.15-0.25; yttrium 0.03-0.04; tungsten 2.1-2.5; boron 0.1-0.15; iron is the rest.EFFECT: increasing cast iron thermal resistance.1 tbl