HUALONG WCJ Series is mainly used for drop weight tear test ( DWTT) of Ferritic Steels, to observe specimen fracture surface after impact within the temperature that fracture type is converted from non-ductility to ductility. This test method is that hammer striker with some weights is raised to some height then released. Free drop hammer impacts and tears the specimen. After impact, proportions of ductile fracture (shear) and cleavage on the fracture surfaces are measured.

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