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US 10,702,916 B2Granted
Steel plate for producing light structures and method for producing said plate
AssigneeArcelorMittal France
InventorsFrederic Bonnet, Olivier Bouaziz, Jean-Claude Chevallot
Life of this patent
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Abstract
A steel plate, the chemical composition of which includes, the contents being expressed by weight: 0.010%≤C≤0.20%, 0.06%≤Mn≤3%, Si≤1.5%, 0.005%≤Al≤1.5%, S≤0.030%, P≤0.040%, 2.5%≤Ti≤7.2%, (0.45×Ti)−0.35%≤B≤(0.45×Ti)+0.70%, and optionally one or more elements chosen from: Ni≤1%, Mo≤1%, Cr≤31, Nb≤0.1%, V≤0.1%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.
Claims34
A steel plate, the chemical composition of which being expressed by weight:
- 0.010%≤C≤0.20%;
- 0.06%≤Mn≤3%;
- Si≤1.5%;
- 0.005%≤Al≤1.5%;
- S≤0.030%;
- P≤0.040%;
- and
- titanium and boron in amounts such that:
- 4.6%≤Ti≤6%;
- and
- (0.45×Ti)−0.35%≤B≤(0.45×Ti)+0.70%;
- optionally one or more of the following elements:
- Ni≤1%:
- Mo≤1%:
- Cr≤3%:
- Nb≤0.1%:
- and
- V≤0.1%:
- a balance of the composition consisting of iron and inevitable impurities resulting from smelting.
16 more elements
Dependencies are inferred from the claim text.