Ferritic stainless steel
AssigneeNisshin Steel Co., Ltd.
InventorsAkinori Kawano, Taichirou Mizoguchi, Kouki Tomimura, Wakahiro Harada
Life of this patent
Estimating the term…
Abstract
A ferritic stainless steel suited for use as a member for heat exchangers to be brazed with Ni-based filler metal or Cu-based filler metal, comprising, on the basis of mass percent, C: 0.03% or less, Si: 3% or less, Mn: 2% or less, P: 0.05% or less, S: 0.03% or less, Cr: from 11 to 30%, Nb: from 0.15 to 0.8%, and N: 0.03% or less, wherein the balance is composed of Fe and incidental impurities, and wherein a value A determined by the following equation is 0.10 or greater: A=Nb−(C×92.9/12+N×92.9/14).
Claims20
A ferritic stainless steel comprising, on the basis of mass percent,
- C:
- 0.03% or less,
- Si:
- 3% or less,
- Mn:
- 2% or less,
- P:
- 0.05% or less,
- S:
- 0.03% or less,
- Cr:
- from 11 to 30%,
- Nb:
- from 0.15 to 0.8%, and
- N:
- 0.03% or less,
- wherein the balance is composed of Fe and incidental impurities, and
- wherein a value A determined by the following equation is 0.10 or greater:
- A=Nb−(C×92.9/12+N×92.9/14).
A ferritic stainless steel comprising, on the basis of mass percent,
- C:
- 0.03% or less,
- Si:
- 3% or less,
- Mn:
- 2% or less,
- P:
- 0.05% or less,
- S:
- 0.03% or less,
- Cr:
- from 11 to 30%,
- Nb:
- from 0.15 to 0.8%, and
- N:
- 0.03% or less,
- wherein the balance is composed of Fe and incidental impurities,
- wherein Ti content (mol) is greater than the total content (mol) of C and N, and
- wherein a value A′ determined by the following equation is 0.10 or greater:
- A′=Nb−C×(92.9/12)/2.
Dependencies are inferred from the claim text.