23, 1901, translation from the Frankfurter Journal relative to a new method of hardening steel in Germany, as follows: View Full Article in Timesmachine » Advertisement ...

Cheaper and Tougher Metal Parts for Many Uses are Expected ... of High-Frequency Induction Heating to the Tasks of Metal Hardening, Brazing, and Annealing ...

Kirishima's Hardening and Tetsutetsu's Steel are similar quirks, but Hardening has the advantage of not being tied to a fixed durability, potentially making it stronger than Steel with enough ...

The good quality of steel is shown by its being homogeneous, being easily worked at the forge, by its hardening and tempering well, by its resisting or overcoming forces, and by its elasticity.