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US 11,497,085 B2Granted
Fe—Cr alloy, method for producing same, and resistance heating element
AssigneeJfe Steel Corporation
InventorsAkito Mizutani, Tatsuhiko Hiratani, Mitsuyuki Fujisawa
Life of this patent
Estimating the term…
Abstract
A Fe—Cr alloy having a chemical composition with increased Si and Al contents, in which the chemical composition satisfies the following formula (1) in terms of the Si content, Al content, and Cr content: 14.0≤% Si+1.15×% Al+0.35×% Cr (1).
Claims26
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 2.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less, and
- Ca:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
19 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 2.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less,
- Ca:
- 0.0002% to 0.0100%, and
- at least one selected from the group consisting of
- Zr:
- 0.01% to 0.20%,
- Hf:
- 0.01% to 0.20%,
- REM:
- 0.01% to 0.20%,
- Cu:
- 0.01% to 0.10%,
- V:
- 0.01% to 0.50%,
- Mo:
- 0.01% to 6.0%,
- B:
- 0.0001% to 0.0050%, and
- Mg:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
36 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 4.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less,
- W:
- 2.3% to 6.0%,
- Ca:
- 0.0002% to 0.0100%, and
- at least one selected from the group consisting of
- Ti:
- 0.01% to 0.50%,
- Zr:
- 0.01% to 0.20%,
- Hf:
- 0.01% to 0.20%,
- REM:
- 0.01% to 0.20%,
- Cu:
- 0.01% to 0.10%,
- Nb:
- 0.01% to 0.50%,
- V:
- 0.01% to 0.50%,
- Mo:
- 0.01% to 6.0%,
- B:
- 0.0001% to 0.0050%, and
- Mg:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
42 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 5.5% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 4.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less,
- Ca:
- 0.0002% to 0.0100%, and
- at least one selected from the group consisting of
- Ti:
- 0.01% to 0.50%,
- Zr:
- 0.01% to 0.20%,
- Hf:
- 0.01% to 0.20%,
- REM:
- 0.01% to 0.20%,
- Cu:
- 0.01% to 0.10%,
- Nb:
- 0.01% to 0.50%,
- V:
- 0.01% to 0.50%,
- Mo:
- 0.01% to 6.0%,
- W:
- 0.01% to 6.0%,
- B:
- 0.0001% to 0.0050%, and
- Mg:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
42 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 5.5% to 6.5%,
- N:
- 0.020% or less, and
- Ni:
- 0.50% or less, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
17 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 5.5% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less, and
- at least one selected from the group consisting of
- Zr:
- 0.01% to 0.20%,
- Hf:
- 0.01% to 0.20%,
- REM:
- 0.01% to 0.20%,
- Cu:
- 0.01% to 0.10%,
- V:
- 0.01% to 0.50%,
- Mo:
- 0.01% to 6.0%,
- B:
- 0.0001% to 0.0050%,
- Ca:
- 0.0002% to 0.0100%, and
- Mg:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
36 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 2.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less, and
- Mg:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
19 more elements
A Fe—Cr alloy having a chemical composition consisting of, by mass %,
- C:
- 0.020% or less,
- Si:
- 3.1% to 10.0%,
- Mn:
- 1.0% or less,
- P:
- 0.040% or less,
- S:
- 0.010% or less,
- Cr:
- 16.0% to 30.0%,
- Al:
- 2.0% to 6.5%,
- N:
- 0.020% or less,
- Ni:
- 0.50% or less,
- Mg:
- 0.0002% to 0.0100%, and
- at least one selected from the group consisting of
- Zr:
- 0.01% to 0.20%,
- Hf:
- 0.01% to 0.20%,
- REM:
- 0.01% to 0.20%,
- Cu:
- 0.01% to 0.10%,
- V:
- 0.01% to 0.50%,
- Mo:
- 0.01% to 6.0%,
- B:
- 0.0001% to 0.0050%, and
- Ca:
- 0.0002% to 0.0100%, with the balance being Fe and inevitable impurities, the Fe—Cr alloy satisfying the following formula (1):
- 14.0≤% Si+1.15×% Al+0.35×% Cr (1)
- where % Si, % Al and % Cr indicate a Si content, an Al content, and a Cr content, by mass %, respectively in the chemical composition.
36 more elements
Dependencies are inferred from the claim text.