How to choose the range of the steel bar tensile testing machine?

The range selection of the rebar tensile testing machine should be determined according to the strength and elongation of the sample material to be tested. Under normal circumstances, the measuring range of the testing machine should meet the following two conditions: 1. The maximum load of the testing machine should be able to meet the maximum tensile force of the test sample when it breaks. Because different types of steel bars have different strengths and elongation rates, the measuring range of the testing machine should be selected according to the characteristics of the sample material to be tested.2. The load range of the testing machine should be able to make the deformation of the test sample within the measured range of the testing machine. For example, if the load range of the testing machine can only be measured to the elastic stage of the steel bar, but not the plastic stage of the steel bar, the test results will be incomplete. In addition, when choosing the range of the testing machine, the accuracy and sensitivity of the testing machine should also be taken into account. The testing machine should have high accuracy and sensitivity to ensure the accuracy and reliability of the test results. In a word, the range of the steel bar tensile testing machine should be comprehensively considered according to the strength and elongation rate of the test sample material, the load range and accuracy of the testing machine, the sensitivity and other factors.