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US 12,655,511 B2Granted
Steel sheet and press-formed article
AssigneeNippon Steel Corporation
InventorsYasuhiro Ito, Hiroyuki Kawata, Mai Nagano, Satoshi Hironaka
Life of this patent
Estimating the term…
Abstract
The steel sheet contains, as a chemical composition, by mass %, C: 0.040% to 0.100%, Mn: 1.00% to 2.00%, Si: 0.005% to 1.500%, P: 0.100% or less, S: 0.0200% or less, Al: 0.005% to 0.700%, N: 0.0150% or less, O: 0.0100% or less, and a remainder: Fe and impurities, in which an arithmetic mean waviness Wa is in a range of 0.10 to 0.30 μm.
Claims7
A steel sheet consisting of, as a chemical composition, by mass %:
- C:
- 0.040% to 0.100%;
- Mn:
- 1.00% to 2.00%;
- Si:
- 0.005% to 1.500%;
- P:
- 0.100% or less;
- S:
- 0.0200% or less;
- Al:
- 0.005% to 0.700%;
- N:
- 0.0150% or less;
- O:
- 0.0100% or less;
- Cr:
- 0% to 0.80%;
- Mo:
- 0% to 0.16%;
- B:
- 0% to 0.0100%;
- Ti:
- 0% to 0.100%;
- Nb:
- 0% to 0.060%;
- V:
- 0% to 0.50%;
- Ni:
- 0% to 1.00%;
- Cu:
- 0% to 1.00%;
- W:
- 0% to 1.00%;
- Sn:
- 0% to 1.00%;
- Sb:
- 0% to 0.200%;
- Ca:
- 0% to 0.0100%;
- Mg:
- 0% to 0.0100%;
- Zr:
- 0% to 0.0100%;
- REM:
- 0% to 0.0100%;
- and
- a remainder:
- Fe and impurities,
- wherein an arithmetic mean waviness Wa is in a range of 0.10 to 0.30 μm.
47 more elements
A steel sheet consisting of, as a chemical composition, by mass %;
- C:
- 0.040% to 0.100%;
- Mn:
- 1.00% to 2.00%;
- Si:
- 0.005% to 1.500%;
- P:
- 0.100% or less;
- S:
- 0.0200% or less;
- Al:
- 0.005% to 0.700%;
- N:
- 0.0150% or less;
- O:
- 0.0100% or less;
- one or more of:
- Cr:
- 0.01% to 0.80%;
- Mo:
- 0.01% to 0.16%;
- B:
- 0.0001% to 0.0100%;
- Ti:
- 0.001% to 0.100%;
- Nb:
- 0.001% to 0.060%;
- V:
- 0.01% to 0.50%;
- Ni:
- 0.01% to 1.00%;
- Cu:
- 0.01% to 1.00%;
- W:
- 0.01% to 1.00%;
- Sn:
- 0.01% to 1.00%;
- Sb:
- 0.001% to 0.200%;
- Ca:
- 0.0001% to 0.0100%;
- Mg:
- 0.0001% to 0.0100%;
- Zr:
- 0.0001% to 0.0100%;
- and
- REM:
- 0.0001% to 0.0100%;
- and
- a remainder:
- Fe and impurities,
- wherein an arithmetic mean waviness Wa is in a range of 0.10 to 0.30 μm.
49 more elements
A steel sheet comprising, as a chemical composition, by mass %:
- C:
- 0.040% to 0.100%;
- Mn:
- 1.00% to 2.00%;
- Si:
- 0.005% to 1.500%;
- P:
- 0.100% or less;
- S:
- 0.0200% or less;
- Al:
- 0.005% to 0.700%;
- N:
- 0.0150% or less;
- O:
- 0.0100% or less;
- Cr:
- 0% to 0.80%;
- Mo:
- 0% to 0.16%;
- B:
- 0% to 0.0100%;
- Ti:
- 0% to 0.100%;
- Nb:
- 0% to 0.060%;
- V:
- 0% to 0.50%;
- Ni:
- 0% to 1.00%;
- Cu:
- 0% to 1.00%;
- W:
- 0% to 1.00%;
- Sn:
- 0% to 1.00%;
- Sb:
- 0% to 0.200%;
- Ca:
- 0% to 0.0100%;
- Mg:
- 0% to 0.0100%;
- Zr:
- 0% to 0.0100%;
- REM:
- 0% to 0.0100%;
- and
- a remainder:
- Fe and impurities,
- wherein an arithmetic mean waviness Wa is in a range of 0.10 to 0.30 μm.
47 more elements
Dependencies are inferred from the claim text.