The Study Of Pressure Equipment Materials Testing Methods And Key Indicators At Home And Abroad

The domestic test methods for materials of pressure equipment and the key indicators obtained were often not recognized internationally. There were many differences between domestic and international test methods and the test data was lack of comparison. In this study, the comparison for test methods and data was carried out from chemical composition, metallographic phase and mechanical properties of materials of pressure equipment. Test method for chemical analysis of low-alloy steel and stainless steel was spark source atomic emission spectrometry. The nonmetallic include test and intergranular corrosion test were taken for example of metallographic test. Mechanical test was conducted with tensile test and impact testing. All of the results from comparison were used to explain the differences between domestic and international test methods. The accumulation of a large number of test data about the domestic pressure equipment materials was meaningful and the study provided a clue for the revision of specification for the domestic pressure equipment. From a long-term point of view, it was helpful to the internationalization of the materials and test methods of pressure equipment and the improvement of international competitiveness for the domestic pressure equipment materials.