| 摘要 |
This steel plate contains, in mass%, more than 0.100% but no more than 0.500% C, at least 0.0001% but less than 0.20% Si, more than 0.20% but no more than 0.50% Mn, 3.0%-10.0% Al, 0.0030%-0.0100% N, more than 0.100% but no more than 1.000% Ti, 0.00001%-0.0200% P, and 0.00001%-0.0100% S; the sum of the C and Ti content fulfils, in mass%, 0.200 < C + Ti ≤ 1.500; the product of the Al and Si content fulfils, in mass% Al × Si ≤ 0.8; the remainder comprises Fe and unavoidable impurities; and the steel plate has a specific gravity of at least 5.5 but less than 7.5. |
