Steel Material and Method for Producing Steel Material
AssigneeNippon Steel Corporation
InventorsShinji Yoshida, Yuji Arai, Atsushi Soma, Hiroki Kamitani
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AssigneeNippon Steel Corporation
InventorsShinji Yoshida, Yuji Arai, Atsushi Soma, Hiroki Kamitani
Estimating the term…
The steel material according to the present disclosure contains a chemical composition consisting of, in mass %, C: more than 0.50 to 0.80%, Si: 0.05 to 1.00%, Mn: 0.05 to 1.00%, P: 0.025% or less, S: 0.0100% or less, Al: 0.005 to 0.100%, Cr: 0.20 to 1.50%, Mo: 0.25 to 1.50%, Ti: 0.002 to 0.050%, B: 0.0001 to 0.0050%, N: 0.002 to 0.010% and O: 0.0100% or less, with the balance being Fe and impurities. The steel material contains an amount of dissolved C within a range of 0.010 to 0.060 mass %. The steel material also has a yield strength within a range of 965 to 1069 MPa, and a yield ratio of the steel material is 90% or more.
A steel material comprising:
4-8. (canceled)
Dependencies are inferred from the claim text.