2Cr13 (manual arc welding) metallographic diagram
,关于GB/t1220 2Cr13(手工电弧焊)金相图
GB/t1220 2Cr13 (Hand Arc Welding) Metallography is the study of the physical properties of metal and its constituent elements. Metallography encompasses both the science and the art of studying metals, their alloying elements, and their structural changes. Th......