金融界2024年10月21日消息,国家知识产权局信息显示,包头钢铁(集团)有限责任公司申请一项名为“一种低比例掺氢输送管道用360MPa级管线钢及其制备方法”的专利,公开号CN 118756036 A,申请日期为2024年5月。
专利摘要显示,本发明公开一种低比例掺氢输送管道用360MPa级管线钢及其制备方法,其中提供的低比例掺氢输送管道用360MPa级管线钢的的化学成分按照质量百分比计为:C:0.03~0.06%、Si:0.10~0.30%、Mn:0.90~115%Nb 0 020 0 050%Ti 0 010 0 030%Als 0 020 0.040%、P≤0.010%、S≤0.0015%、H≤2ppm、O≤30ppm、N≤50ppm,其余为Fe和不可避免的杂质,力学性能满足:屈服强度:400~500MPa,抗拉强度:500~600MPa,延伸率A50:35~45%。
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