CASTABLE IRON-BASED ALLOY Russian patent published in 2004 - IPC

FIELD: metallurgy, in particular castable alloys of low heat thermal expansion.

SUBSTANCE: claimed alloy contains (mass %); nickel 31.5-33.0; cobalt 8.1-9.3; niobium 0.25-0.5; molybdenum 0.15-0.3; rare-earth metals (cerium, lanthanum, praseodymium, neodymium) in total 0.04-0.25; and balance: iron. Invention affords to decrease of mean heat thermal linear expansion in temperature intervals of 20-300⁰C and 20-300⁰C as well as safe crack resistance and homogeneity of alloy.

EFFECT: castable alloys with decreased heat thermal expansion.

4 tbl