焊缝金属中扩散氢含量,是以100克熔敷金属在实验条件下收集到的扩散氢体积,换算成为标准状态下(0℃、一个大气压)的体积来表示的。一般工程计算时,不考虑毛细现象和液体静压力对测定结果的影响,直接应用理想气体状态方程式,换算成标准状态下的体积,可按下式计算; The amount of diffusible hydrogen in the weld metal is expressed as the volume of diffusible hydrogen collected under 100 g of deposited metal under experimental conditions in terms of volume at standard conditions (0 ° C, one atmosphere). General engineering calculations, regardless of the capillary phenomenon and hydrostatic pressure on the measurement results, the direct application of the ideal gas equation of state, converted into the volume under the standard state, can be calculated as follows;