AUSTENITE, IRON-CHROMIUM-NICKEL ALLOY FOR SPRING MEMBERS OF ATOMIC REACTORS Russian patent published in 1998 - IPC

FIELD: atomic engineering, more particularly, constructional materials. SUBSTANCE: austenite iron-chromium nickel alloy comprises the following components (wt %): 16.0-20.0 chromium; 38.0- 45.0 nickel; 4.0-6.0 molybdenum; 0.7-3.5 manganese; 0.05- 0.8 niobium; 1.6-3.0 titanium; 0.8-1.5 aluminium; 0.05- 0.6 vanadium; 0.03-0.09 carbon; 0.007-0.06 nitrogen; 0.003-0.010 boron; 0.01-0.6 silicon; and the iron balance. Total amount of carbon, nitrogen and boron is not in excess of 0.13 wt %; nickel to total titanium and aluminium amount ratio is within 10-15, and niobium and vanadium total amount to carbon and nitrogen amount ratio is within 6-12. EFFECT: material having sufficient strength, level of plasticity, processibility and resistance to relaxation (reduced resilient strains which are essential to attain desired effort for contracting spring members. 4 ex, 1 ex, 4 tbl