Steel drop hammer tear test

The drop weight tear test is a test item used to detect the toughness of materials. It is mainly used to study the low-temperature brittleness of metal materials. The goal is to establish the relationship between fracture morphology and temperature. The drop weight tear test is one of the important means to evaluate the intrinsic quality of wire steel plates. By rapidly breaking a full-section steel plate sample at one time, the metallurgical defects, fracture properties, morphology and other characteristics are observed from the fracture surface to comprehensively evaluate the metallurgical quality and fracture resistance.
The steel drop weight tear test can use a drop weight or pendulum of a certain height to break the sample in a simply supported beam state at one time, and evaluate the relevant performance results.
Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various steel materials and provides professional drop weight tear testing services for steel materials.

is suitable for steel plates and pipes with a thickness of 3 mm~40 mm.

Use a drop weight or pendulum of a certain height to break the sample in a simply supported beam state at one time to test the drop weight tearing properties of the steel, such as shear area percentage, total absorbed energy, crack initiation energy, etc.
1) There are usually two types of fracture morphology of the sample. One is that the entire cross section of the sample fracture is a ductile fracture zone or a brittle fracture zone. The other is that a brittle fracture zone starts from the notch root and changes from brittle fracture to ductile fracture from the notch root to the hammering side.
2) Invalid test: The test is invalid when the sample does not completely break after one impact due to insufficient energy of the testing machine or warping of the sample during impact.

GB/T 8363-2018 Steel - Drop weight tear test method
GB/T 2975 Steel and steel products Sampling location and sample preparation for mechanical property testing