How to say "steel" in Japanese
Choosing the right word
- 鋼はがねnounSteel as a refined metal — the material of blades and tools. It is the natural choice when you mean steel itself, the worked metal, rather than iron or metal in general.
- nounThe loanword, used for steel as an industrial material — steel products, shelving, furniture and the like — in commercial and technical contexts rather than for the metal as a substance.
- 鋼鉄こうてつnounSteel as a technical term — the vocabulary of the steel industry, engineering and scientific writing. Also used figuratively for unyielding firmness, as in a will of steel.
- 鉄てつnounPrimarily 'iron', but in ordinary speech it often stands for steel as well, where the difference between the two metals is not at issue. For steel specifically, 鋼 or スチール is more precise.
Choose 鋼 for steel as a refined metal, especially for blades and tools; 「スチール」 for steel as an industrial material; 鋼鉄 as the technical term of industry and engineering; 鉄 is 'iron', used loosely for steel in everyday speech.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
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