Q235 and Q355 are two common steel materials in stainless steel plates. They are distinguished by different chemical compositions and physical properties.
1. Chemical composition: Q235 steel plate contains low content of carbon, while Q355 steel plate contains higher carbon. Therefore, Q355 steel plate is tougher and more wear-resistant.
2. Physical properties: Q355 steel plate has higher strength and plasticity than Q235 steel plate.
To determine whether a steel plate is Q235 or Q355, you can use the following methods:
1. Check the logo on the steel plate: There may be a logo with the steel plate model printed on the steel plate. The model of the steel plate can be determined based on the logo.
2. Metallographic inspection: The carbon content in the steel plate can be checked through a metallographic microscope.
3. Chemical analysis: The chemical composition of the steel plate can be determined through chemical analysis instruments.
4. Physical property testing: The physical properties of the steel plate can be determined through physical property testing (such as bending test, tensile test).
To differentiate between Q235 and Q355, the most common method is through physical detection. For example, you can conduct a hardness test on the sample and compare the test results to determine whether the sample is Q235 or Q355. Another method is to determine whether a sample is Q235 or Q355 through chemical analysis, which measures the amount of carbon contained in the sample.
