My thoughts as well. The HMS Sheffield essentially “melted” after being struck by an Exocet missile. Burned for 6 days, then sank. Aluminum is fine for bass boats, not so war vessels...
Nope. Damage was from internal fire of flammable fittings.
Sheffield was a steel ship anyway
Note damage below. Paint is blistered off the hull, and fibreglass stack and radar dome are cooked, but structure and above deck fittings are intact (even the aluminium boat).
NB this is a offside picture of the side not hit.