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US 2015/0030882 A1Published application
Steel plate for producing light structures and method for producing said plate
AssigneeArcelorMittal France
InventorsFrederic BONNET, Olivier BOUAZIZ, Jean-Claude CHEVALLOT
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Abstract
The invention relates to a steel plate, the chemical composition of which comprises, 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≦3%, Nb≦0.1%, V≦0.1%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.
Claims35
A steel plate, the chemical composition of which comprises steel, 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%;
- and
- titanium and boron in amounts such that:
- 4.6%≦Ti≦6%;
- and
- (0.45×Ti)−0.35%≦B≦(0.45×Ti)+0.70%;
- the balance of the composition consisting of iron and inevitable impurities resulting from the smelting.
9 more elements
Dependencies are inferred from the claim text.