At what strength of concrete deshuttering of slab can be done?

This is irrelevant to my field of work. I'm in the financial role.

basically deshuttering of slab is in depend up on the mix propotion of the concrete.and achived strength more than %.like m is needed for deshuttering period is dayswe are using m,for slabs need days is enough.in beams we are using m and above ~ days are applicable in practical.