greetings,

JEE Mains marks will not get you admission into IITs, for that you first need to qualify for JEE advanced (through JEE mains marks - around 50 percentile) and clear JEE advanced to get IITs.

You need to get at least a rank of under 4-5 thousand to get some branch like chemical or metallurgy at one of the IITs under your category.

Dear aspirant,

According to your question and taking into consideration that you want to know what is the marks required for an sc candidate to crack iit.

I would like to tell you that the marks differs every year and it cannot be predicted and the cut off for every will be different. But generally 50-60 marks will be on a safer side.