第1部分:1 1 1/2 in.焊接组件加工钢试样的轴向载荷控制疲劳试验。使用厚板评估用于海上钻井平台施工的正火钢的全厚度（ST、Z方向或短横向）疲劳特性。钢的短横向性能很重要，因为许多焊接接头需要通过板的厚度传递荷载。在设计和制造此类接头时，应考虑焊接过程中层状撕裂的可能性。在进行的一系列实验中，在最终加工之前，未在焊接组件中检测到层状撕裂。从焊接组件上切下圆柱形试样，并在两端进行螺纹连接，以便能够平行于位于中心的试验板的整个厚度方向（垂直于轧制表面）施加荷载。 符合美国航运局标准的EH 32级钢表现出良好的静态穿透厚度延展性（大于20%ROA）。与焊缝金属的性能和板材的纵向方向相比，在高循环和低循环载荷下，全厚度截面在完全反向载荷（R=-1）下的表现都不好。 用扫描电子显微镜检查断裂表面清楚地表明，非金属夹杂物在短横向上影响静态和疲劳失效机制。在光学显微镜观察的蚀刻横截面中，观察到平行于轧制方向的扁平夹杂物表面的疲劳裂纹萌生。 钢板横截面的简单硬度试验似乎是短横向拉伸和疲劳强度的有用指标，并被推荐为评估钢板全厚度性能的经济方法。第2部分:本报告的目的是根据焊接研究委员会压力容器研究委员会的行业合作计划积累的大量数据，呈现当前重壁核反应堆所用钢材性能的总体情况。这些数据存储在一个名为HVYSTL程序的计算机程序中。该项目的试样取自实际生产的板材、锻件和核合同用铸件，采用喷嘴切割法- 特别为此订购的出品、收尾和额外材料。因此，这些数据代表了当前核反应堆材料的特性。测试计划包括完整的化学分析、拉伸试验、夏比V型缺口冲击试验和落锤无损检测试验。夏比试验值包括在整个转变温度范围内进行试验的吸收能量（单位:英尺-磅）、剪切断裂百分比和侧向膨胀（单位:密耳）。除了常规的四分之一厚度位置外，还对表面和中心位置的试样进行了测试。这些试样相对于板材的轧制方向进行纵向和横向定向，相对于锻件表面进行切向和径向定向。

Part 1:Axial load-controlled fatigue tests on steel specimens machined from welded assemblies of 1 1/2 in. thick plates were conducted to evaluate the through thickness (ST, Z-direction or short transverse) fatigue characteristics of a normalized steel used for the construction of offshore drilling rigs. Short transverse properties of steel are important because many welded joints require loads to be transferred through the thickness of a plate. When designing and fabricating such joints, the possibility of lamellar tearing during welding should be considered. In the series of experiments undertaken, no lamellar tearing was detected in the welded assemblies prior to final machining. Cylindrical specimens were cut from the welded assemblies and threaded at both ends so that loads could be applied parallel to the through thickness direction (normal to the rolling surface) of the test plate which was located in the center. The steel, Grade EH 32 which conforms to American Bureau of Shipping standards, exhibited good static through thickness ductility (greater than 20% ROA). In comparison with the properties of the weld metal and the longitudinal direction of the plate, the through thickness section did not perform as well under complete load reversal (R = -1) in both high and low cycle loading. Inspection of fracture surfaces with a scanning electron microscope clearly shows that non-metallic inclusions affect both the static and fatigue failure mechanisms in the short transverse direction. Fatigue crack initiations at the surface of flat inclusions running parallel to the rolling direction were observed in etched cross sections viewed through an optical microscope. Simple hardness tests of plate cross sections appear to be useful indicators of the short transverse tensile and fatigue strengths, and are recommended as an economical method of evaluating the through thickness properties of steel plate.Part 2:The objective of this report is to present a general picture of the properties of the steels used in current heavy walled nuclear reactors, based on the extensive data accumulated by the Industry Cooperative Program of the Pressure Vessel Research Committee of the Welding Research Council. These data are stored in a computer program, known as the HVYSTL program. The test specimens for this program were taken from actual production plates, forgings, and castings for nuclear contracts by utilizing nozzle cut-outs, crop ends and extra material ordered especially for this purpose. Therefore the data are representative of the properties of current nuclear reactor materials. The testing program included complete chemical analysis, tensile tests, Charpy V-notch impact tests, and drop weight NDT tests. Charpy test values consisted of absorbed energy in foot-pounds, percent shear fracture, and lateral expansion in mils for tests over the entire transition temperature range. In addition to the customary quarter thickness location, testing was also conducted on specimens from surface and center locations. These specimens were oriented both longitudinally and transversely with respect to the rolling direction of plates and tangentially and radially with respect to the surfaces of forgings.