Aogami Super - Blue Steel and Tamahagane Steel

[Mustafa Umut Sarac]

I read that Aogami Super - Blue Steel is the most superior for blades and knives. When you compare with tamahagane steel , which is superior ?

And for the sake of metallurgy , I need two steels phase diagrams , micrographs and where they are locked in diagram and spectrum analysises.

 

Thank you very much,

Mustafa Umut Sarac

Istanbul

[Robert S]

Tamahagane is a form of bloomery steel. which has much lower elemental control than modern steels.  Japanese smiths made up for that with extremely sophisticated processing of tamahagane, which modified the content of carbon and other elements.  Modern steels can have extremely tight control of elemental content, crystalization, etc.  which allows blade manufacture with much lower effort... but the end results in both cases can be exceptional.  The only meaningful comparison is the end product, not the underlying steel.

[Mustafa Umut Sarac]

  On 2/26/2025 at 9:22 PM, Robert S said:

Tamahagane is a form of bloomery steel. which has much lower elemental control than modern steels.  Japanese smiths made up for that with extremely sophisticated processing of tamahagane, which modified the content of carbon and other elements.  Modern steels can have extremely tight control of elemental content, crystalization, etc.  which allows blade manufacture with much lower effort... but the end results in both cases can be exceptional.  The only meaningful comparison is the end product, not the underlying steel.

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Thank you Robert. I found an excellent , very detailed and long post from UK .

 

Its here , Everyone MUST least look at it or read completely.

 

https://covingtonand...ory-of-a-few-steels/

 

AND this :https://swordsmith-f...om/tsukurikata1.html