Development of S11306+SA516Gr70 roll-bonded clad steel plate for pressure vessels

To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 ＋ SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performed to systematically evaluate the steel plate in normalized state and normalized ＋ stress relieved state. The results show the cladding interface of the Sl1306 ＋ SA516Gr70 roll-bonded clad steel plate has high shear strength, and the base metal has good mechanical properties. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.

正火温度对A573Gr.70容器钢带状组织和力学性能影响

研究了系列正火热处理工艺对A573Gr.70钢带状组织和力学性能的影响,分析了带状组织形成原因,提出了A573Gr.70钢的最佳热处理工艺制度。试验结果表明,随着正火温度的升高,带状组织等级逐渐降低,力学性能得到改善。当正火温度达到940°C时,带状组织基本消除,钢板的强韧性匹配达到最佳状态。