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US 2023/0126910 A1Published application
Slab and continuous casting method thereof
AssigneeNippon Steel Corporation
InventorsShin TAKAYA, Kenji TAGUCHI, Yuichiro KATO
Life of this patent
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Abstract
This slab is a slab of high-Al steel containing C: 0.02 mass % to 0.50 mass % and Al: 0.20 mass % to 2.00 mass %, in which, in a case where [Zr], [Ti], [Al], and [N] each represent a content (mass %) in the slab, a Zr content and a Ti content satisfy a relationship of [Zr]+0.2×[Ti]≥4/3×[Al]×[N], and the Zr content satisfies a relationship of 0.0010 mass %≤[Zr].
Claims25
1-6. (canceled)
A slab of high-Al steel comprising:
- C:
- 0.02 mass % to 0.50 mass %;
- and
- Al:
- 0.20 mass % to 2.00 mass %,
- wherein a Zr content and a Ti content satisfy the following formula (1), and the Zr content satisfies the following formula (2),
- [Zr]+0.2×[Ti]≥4/3×[Al]×[N] (1)
- 0.0010 mass %≤[Zr] (2)
- here, [Zr], [Ti], [Al], and [N] each represent a content (mass %) in the slab.
6 more elements
Dependencies are inferred from the claim text.