| 摘要 |
A continuously cast steel consisting of 0.32 to 1.0% carbon 0.20 to 3.0% manganese, up to 2.0% silicon, max. 0.05% phosphorus, max. 0.05% sulphur, 0.002 to 0.008% nitrogen, 0.015 to 0.08% zirconium, 0.010 to 0.10% aluminium, up to 3.5% chromium, up to 3.5% nickel and up to 0.5% molybdenum rest iron and unavoidable impurities, wherein the zirconium: nitrogen ratio being 7:1 to 10:1 and the austenite grain size being ASTM 6 or a smaller grain size number.
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