Auxiliary device for low-temperature tensile test of metal material

The utility model discloses an auxiliary device for a low-temperature tensile test of a metal material, which comprises a container containing low-temperature liquid, a first connecting rod connected to one end part of the container and extending along the direction far away from the container, and a second connecting rod slidably arranged in the other end part of the container in a penetrating manner along the axial direction of the second connecting rod, the extending direction of the first connecting rod is consistent with the sliding direction of the second connecting rod, connectors are formed at the ends, close to each other, of the first connecting rod and the second connecting rod respectively, the metal material is located in the container, and the two ends of the metal material are detachably connected with the connectors on the first connecting rod and the second connecting rod respectively. According to the auxiliary device disclosed by the utility model, the container containing the low-temperatu