The formula to calculate theoretical density, d is d = nA/VN, n - no of atoms in unit cell, A - atomic weight, V - unit cell volume, N - Avogadro's number (6.023 x 10>power23. Major component of Steel is Fe (A = 56). Fe is BCC at RT, lattice parameter a = 0.286 nm, V = a>power3. No of atoms in a unit cell for BCC = 2. Put all these values in the equation and you will get a value close to 7.85 g/cc.
Dr. Ranjit Bauri Date: