The Japanese stock market is expected to open steady on Tuesday after the Nikkei 225 tumbled more than 4,600 points over two sessions ahead of the Marine Day holiday. The index cratered 2,694.38 points or 4.03 percent on Friday to finish at 64,141.12, with broad losses across financials, technology, and automakers. The global outlook remains soft amid interest rate concerns and Middle East tensions, while U.S. markets ended lower on Monday with the Dow falling 307.16 points. Crude oil edged higher as U.S.-Iran conflict fears persisted, with West Texas Intermediate up 0.47 percent to $82.88 per barrel.