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STEEL PLATE HAVING YIELD STRENGTH OF 670 to 870 N/mm2 AND TENSILE STRENGTH OF 780 to 940 N/mm2
STEEL PLATE HAVING YIELD STRENGTH OF 670 to 870 N/mm2 AND TENSILE STRENGTH OF 780 to 940 N/mm2
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机译:钢板的屈服强度为670至870 N / mm2,抗拉强度为780至940 N / mm2
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摘要
In a steel plate according to the present invention, a chemical composition is within a predetermined range, an α value is 0.13 to 1.0 mass %, a β value is 8.45 to 15.2, an yield strength is 670 to 870 N/mm2, a tensile strength is 780 to 940 N/mm2, an average grain size at ½t of the steel plate is 35 μm or less, and a plate thickness is 25 to 200 mm. In the steel plate according to the present invention, in a case where SR is performed on the steel, a charpy absorbed energy at −40° C. in an area in which SR is performed may be 100 J or more.
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机译:在根据本发明的钢板中,化学组成在预定范围内,α值为0.13至1.0质量%,β值为8.45至15.2,屈服强度为670至870N / mm。 2 Sup>,抗拉强度为780〜940 N / mm 2 Sup>,钢板的1 / 2t平均粒径为35μm以下,板厚为25〜200mm 。在根据本发明的钢板中,在对钢进行SR的情况下,在进行SR的区域中在-40℃下的夏比吸收能可以为100J以上。
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