焊管2026，Vol.49Issue(6)：50-56,67,8.DOI:10.19291/j.cnki.1001-3938.2026.06.006
X60M管线钢输氢适用性评价
Applicability Evaluation of X60M Pipeline Steel for Hydrogen Service
摘要
Abstract
To assess the hydrogen compatibility and applicability of domestically produced X60 pipeline steel for hydrogen service and to address the material selection challenges associated with high-strength,large-diameter hydrogen pipelines,a comprehensive evaluation was conducted in this study.Fifteen X60M grade longitudinal submerged arc welded pipes produced by major domestic steel mills were selected.According to relevant domestic and international standards and the proposed engineering conditions,three mechanical tests including slow strain rate tensile test,fracture toughness test,and fatigue crack growth rate test were performed.Key performance indicators included loss in percentage reduction of area,plane-strain fracture toughness(Kic),and fatigue life.Results demonstrated that the percentage reduction of area ranged from 22.75%to 33.72%for base metal and from 29.22%to 37.67%for weld metal—both well within the acceptance threshold of≤40%;plane-strain fracture toughness values exceeded 70 MPa·m 1/2 across all critical microstructural regions(base metal,weld metal,and heat-affected zone);and the predicted fatigue life determined using the experimentally measured fatigue crack growth rate,surpassed the minimum design requirement of 3,500 cycles.Experimental results demonstrate that,by appropriately controlling chemical composition,nonmetallic inclusions,and grain size,the existing X60M pipeline steel used for natural gas transportation in China exhibits good hydrogen compatibility and is suitable for pure hydrogen pipeline construction,thereby providing a reliable technical reference for material selection of high-strength large-diameter hydrogen pipelines.关键词
X60M管线钢/氢相容性/输氢管道/断裂韧度/疲劳裂纹扩展速率Key words
X60M pipeline steel/hydrogen compatibility/pipeline for hydrogen/fracture toughness/fatigue crack growth rate分类
矿业与冶金引用本文复制引用
钟桂香,白芳..X60M管线钢输氢适用性评价[J].焊管,2026,49(6):50-56,67,8.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目"中长距离管道纯氢/掺氢输送关键技术研究"(项目编号2021DJ5002). （项目编号2021DJ5002）
