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发明公开
CN109943771A 一种高韧性可焊接细晶粒结构钢板及其生产方法 有权

一种高韧性可焊接细晶粒结构钢板及其生产方法
摘要：
本发明涉及一种高韧性可焊接细晶粒结构钢板及其生产方法，所述钢板化学成分（重量百分比）C：0.02～0.07%、Si：0.10～0.50%、Mn：1.20～1.65%、P≤0.020%，S≤0.005%、Nb：0.030～0.050%、Cr：0.10～0.30%、Mo：0.08～0.17%、Ni：0～0.18%、Ti：0.008～0.035%、Als：0.015～0.040%、As≤0.04%、Sn≤0.03%、N≤0.005%、O≤0.003%、H≤0.0002%，余量为Fe和不可避免的杂质；本发明钢板可应用于地铁钢结构件、大跨度桥梁结构、高层建筑、海洋平台等领域。
摘要（英）：

The invention relates to a high-toughness weldable fine-grain structural steel plate and a production method thereof. The steel plate comprises, by weight, 0.02-0.07% of C, 0.10-0.50% of Si, 1.20-1.65% of Mn, less than or equal to 0.020% of P, less than or equal to 0.005% of S, 0.030-0.050% of Nb, 0.10-0.30% of Cr, 0.08-0.17% of Mo, 0-0.18% of Ni, 0.08-0.035% of Ti, 0.015-0.040% of Als, less thanor equal to 0.04% of As, less than or equal to 0.03% of Sn, less than or equal to 0.005% of N, less than or equal to 0.003% of O, less than or equal to 0.0002% of H, and the balance Fe and inevitableimpurities. The steel plate can be applied to the fields of subway steel structural members, large-span bridge structures, high-rise buildings, marine platforms and the like.

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