Valve assembly for an injection valve and injection valve

Valve assembly (11) for an injection valve (10), comprising a valve body (14) including a central longitudinal axis (L), the valve body (14) comprising a cavity (18) with a fluid inlet portion (42) and a fluid outlet portion (40), a valve needle (20) axially movable in the cavity (18), the valve needle (20) preventing a fluid flow through the fluid outlet portion (40) in a closing position and releasing the fluid flow through the fluid outlet portion (40) in further positions, and an electro-magnetic actuator unit (36) being designed to actuate the valve needle (20), the electro-magnetic actuator unit (36) comprising a solenoid (38) being arranged radially outside the valve body (14), a housing (39) being arranged radially outside the valve body (14) and being in contact with the valve body (14) in a contact section (50) of the valve body (14), the contact section (50) having an upper boundary (52) facing the fluid inlet portion (42), and an armature (22) being axially movable in the cavity (18) of the valve body (14). A stop surface (48) of the valve body (14) facing the fluid outlet portion (40) is designed to limit the axial movement of the armature (22). The valve body (14) has a wall section (55) extending axially from the upper boundary (52) of the contact section (50) to an axial position being equal to an axial position of the stop surface (48). The wall section (55) comprises at least along a part of its axial extension a permanent magnetic wall part (56).