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US 11,377,707 B2Granted
Clad steel plate having excellent strength and formability, and production method therefor
AssigneePosco
InventorsTae-Jin Song, Man-Young Park, Won-Tae Cho
Life of this patent
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Abstract
A clad steel plate, having excellent strength and formability, may include a base material; and a cladding material provided on both side surfaces of the base material, wherein the base material is austenitic high-manganese steel comprising, by weight, 0.3% to 1.4% of C, 12% to 25% of Mn, and a remainder of Fe and inevitable impurities, the cladding material is a martensitic carbon steel comprising, by weight, 0.09% to 0.4% of C, 0.3% to 4.5% of Mn, and a remainder of Fe and inevitable impurities.
Claims10
A clad steel plate having excellent strength and formability, the clad steel plate comprising:
- a base material;
- a cladding material provided on both side surfaces of the base material;
- and
- a yield strength of 700 MPa or more, and a product of tensile strength and elongation of 25,000 MPa % or more,
- wherein the base material is an austenitic high-manganese steel comprising, by weight, 0.3% to 1.4% of C, 12% to 25% of Mn, 0.0005% to 0.005% of B, and a remainder of Fe and inevitable impurities, and
- the cladding material is a martensitic carbon steel comprising, by weight, 0.09% to 0.34% of C, 1.18% to 4.5% of Mn, and a remainder of Fe and inevitable impurities.
3 more elements
Dependencies are inferred from the claim text.