| 摘要 |
PCT No. PCT/JP94/00230 Sec. 371 Date Apr. 14, 1995 Sec. 102(e) Date Apr. 14, 1995 PCT Filed Feb. 16, 1994 PCT Pub. No. WO95/05492 PCT Pub. Date Feb. 23, 1995A carbon steel containing super-finely dispersed oxide system inclusions, comprising, by weight, not more than 1.2% carbon, 0.01 to 0.10% Al, total oxygen of not more than 0.0050%, Mg which fulfills the relationship of the following formula: (total oxygen wt %x0.5)</=total Mg wt %<(total oxygen wt %x7.0) and Mg oxides comprising MgOxAl2O3 and free MgO.
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