HIGH-TEMPERATURE AUSTENITIC STEEL Russian patent published in 1998 - IPC

FIELD: metallurgy, in particular, high-temperature steels; applicable in production of centrifugal pipes designed for manufacture of coil pipes of tube furnaces, rollers and other parts operating in corrosive media at high temperatures and pressures. SUBSTANCE: steel contains components in the following quantities, wt.%: carbon 0.2-0.3; silicon 1.0-3.0; manganese 4.0-6.0; nickel 14.0-16.0; chromium 24.0-26.0; nitrogen 0.2-0.5; zirconium 0.005-0.05; the balance, iron. EFFECT: higher efficiency. 1 tbl