Nippon Steel & Sumikin Stainless Corp. have raised prices of its nickel-based SS for an eighth straight month in August because of higher nickel costs. Nippon Steel & Sumikin increased prices for 304 grade to JPY 420,000 a metric ton this month, from JPY 375,000 in July. Mr Yasuyuki Kuroda manager at Nippon Steel & Sumikin’s planning department said that it may charge more for the sheets in September if high nickel prices continue.