The present municipality was created in 1971 through the amalgamation of the City of Sandviken (itself instituted in 1943) with a number of surrounding rural municipalities.
The coat of arms was granted to the then City of Sandviken upon its institution in 1943. The device in the middle is a steam hammer. After the municipality reform of 1971 the arms was taken over by the new, larger, entity.
Note: As Sandviken means the sandy bay there are numerous other places of that name throughout Scandinavia.