teräksien
Teräksien is a term that, when translated from Finnish, means "of steels" or "steels'". It is not a specific type of steel, but rather a grammatical form used in the Finnish language to indicate possession or relation to steel. For example, one might refer to "teräksien vahvuus" which translates to "the strength of steels" or "steels' strength." This grammatical usage allows for a concise way to express concepts involving multiple steels or steel in a general sense.
The term itself does not refer to any particular alloy composition, manufacturing process, or historical period.