Subject
5 free books about steel, free to read online. Chapter 1 of any book is free, no account needed.
The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel
Colvin, Fred H. (Fred Herbert); Juthe, K. A.
Non-technical chats on iron and steel, and their application to modern industry
La Verne W. Spring
The beginnings of cheap steel
Philip W. Bishop
Steel: A Manual for Steel Users
William Metcalf
A few secrets of the metallurgist simply told
Gerald Watson Hinkley