近年来,从船体到一般构件的设计,都开始重视钢材的低温脆性,尤其是气体合成液体石油、球型容器和低温用建筑材料的钢板。这类钢板不仅要求有良好的强度、可焊性能、塑性和低温冲击靭性,而且还要进行低温脆性转变温度的试验与判断检验,并要求达到一定的指标。从16锰低合金高强度钢投入生产以来,经过多年的生产实践及各个部门实际使用的结 In recent years, from the hull to the design of general components, have begun to attach importance to the low temperature brittleness of steel, especially the gas synthesis of liquid petroleum, spherical containers and low temperature building materials steel. This type of steel not only requires good strength, weldability, plasticity and low temperature impact toughness, but also for low temperature brittle transition temperature test and judgment test, and requires a certain target. From 16 manganese low alloy high strength steel into production, after many years of production practice and the actual use of various departments of the junction