从历史上看，一些焊接金属的性能一直不如它们连接的钢。目前正在制造的某些压力容器焊接件仍然存在这个问题。因此，无法将某些压力容器钢用于某些理想的应用。 影响焊缝金属性能的技术和经济因素很多，但这些因素往往不如与基板性能相关的因素受到重视和理解。压力容器研究委员会的制造部门认识到需要对控制焊接性能的因素进行更多澄清。此外，该部门对限制压力容器钢完全适用性的焊接金属问题的当前定义表示了兴趣。 这份报告就是为了满足这些需求而写的。 本报告描述了显微组织和成分等相关因素对熔敷金属和应力消除焊接金属力学性能的影响。讨论了焊接工艺、焊接工艺和位置以及焊后热处理等因素对焊接性能的影响。介绍了当前压力容器钢和焊缝金属性能的描述性和列表信息，以及限制压力容器钢潜在用途的焊缝金属问题的讨论。概述了解决这些问题所需的工作建议。

Historically, the properties of some weld metals have been inferior to those of the steels that they joined. The problem still exists for certain pressure vessel weldments currently being fabricated. As a result, it has not been possible to use some pressure vessel steels for certain desirable applications. Numerous technical and economic factors influence weld metal properties, but these factors are often less appreciated and understood than those associated with the behavior of their base plates. The Fabrication Division of the Pressure Vessel Research Committee recognized the need for more clarification of factors that control weld properties. Further, the Division expressed interest in a current definition of the weld metal problems that restrict the full applicability of pressure vessel steels. This report was written to satisfy these needs. The effects of interrelated factors such as microstructure and composition on the mechanical properties of as-deposited and stress-relieved weld metals are described in this report. Factors such as welding procedures, welding processes and positions, and post weld heat treatments that also influence weld properties are discussed. Descriptive and tabulated information about current pressure vessel steel and weld metal properties are presented, along with a discussion of weld metal problems that limit the potential uses of pressure vessel steels. Recommendations for work needed to resolve these problem areas are outlined.