The first part of the lesson is to make sure the steel is high-carbon steel, since most other steels aren’t able to be heat treated. It will also have a specific method for its quenching ...

Cast iron has a 2% to 3.5% carbon content, while carbon steel has less than 2%. This subtle difference results in two pieces ...

MIT spinout Boston Metal has powered up its electricity driven steel production reactor and made over a ton of metal in a ...

While fired at high temperatures, the tamahagane is never allowed to reach a molten state. This is to ensure that just the right amount of carbon will dissolve into the steel, and that the ...