No, Salafi is not specific to any particular school of thought within Islam. Salafism refers to a movement that seeks to return to the practices and beliefs of the early generations of Muslims, known as the Salaf.
On the other hand, Hanbali is one of the four major Sunni schools of Islamic jurisprudence, named after its founder Imam Ahmad ibn Hanbal. The Hanbali school is known for its strict adherence to the literal interpretation of the Quran and Hadith, and its emphasis on the opinions of the early scholars of Islamic jurisprudence.
While there may be individuals who identify as both Salafi and Hanbali, it is important to recognize that Salafism is not limited to any specific school of thought. Salafis can be found within different sects, including but not limited to Hanbali, Maliki, Hanafi, and Shafi'i.