That’s not really true, though. The Titanic was manufactured with the highest grade steel available at the time, with the same steel not only being used for her two sister ships, but numerous other ships - Yardworkers and Retired Harland-Wolff shipbuilding engineers have referred to it as “Battleship Quality” steel.
The “Poor Metallurgy”(aka, Brittle steel) theory of the Titanic has long been disproved, since we’ve been able to use ultrasound and GPR to examine her hull, including the points she ground along the iceberg, and the hull is in remarkable condition, considering. The issue was the Mild Steel rivets, which weren’t as strong as the hull-plates - so when the titanic struck the iceberg, the plates bent and rippled which simply sprung a number of the rivets, combined with a number of others that had the heads sheared off by being ground along the iceberg.
