Can the social security card be used as an ID card to get a train ticket?

No, you can go to the police card window of the railway station and go to the identity information office to apply for a temporary identity certificate and use it to get it.

24 kinds of ticket vouchers:

Resident ID card, temporary id card, household registration book, travel permit of the People's Republic of China, military security card of China People's Liberation Army, military officer's card, police officer's card, soldier's card, military cadet's card, retired military cadre's card, valid passport that can be used according to regulations, travel permit for Hong Kong and Macao residents to and from the mainland, travel permit for People's Republic of China (PRC) (People's Republic of China (PRC) for short) to and from Hong Kong and Macao, travel permit for mainland travel permit for taiwan residents and mainland residents to and from Taiwan, Alien's residence permit, alien's entry and exit certificate, diplomat's card, consulate card, seaman's card, foreigner's identity certificate issued by the Ministry of Foreign Affairs, passport loss report certificate issued by the exit and entry administration department of the local public security organ, and temporary identity certificate issued by the Railway Public Security Department.