STEEL Russian patent published in 2002 - IPC

FIELD: metallurgy. SUBSTANCE: invention relates to a composition of foundry heat-resisting steel used, for example, for making rollers of blank continuous foundry machines. Proposed steel comprises components taken in the following ratio, wt.-%: carbon, 0.15-0.35; silicon, 0.17-0.40; manganese, 0.25-0.60; chromium, 1.20-2.00; molybdenum, 0.25-0.45; vanadium, 0.90-1.40; titanium, 0.09-0.18; boron, 0.002-0.008; calcium, 0.006-0.012; nitrogen, 0.01-0.04; iron, the balance. The following ratios must be maintained: (% V + % Ti)/% C = 4.5-6.6; (% V + % Ti)/% N = 39.5-99.0; (% V + % Ti)/(% C + % N) = 4.05-6.2. Proposed steel shows simultaneous properties of heat-resistance and wear-resistance that ensures to use this steel for making rollers for blank continuous foundry machines. EFFECT: improved properties of steel. 2 tbl