Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
An austenitic stainless corrosion resistant alloy having good resistance to pitting and crevice corrosion in chloride bearing media combined with resistance to corrosion in oxidizing media consisting essentially in weight percent of about ______________________________________
C 0.06 Max.
Mn 1.00 Max.
Si 0.50 Max.
P 0.03 Max.
S 0.03 Max.
Cr 22-26
Ni 32.5-37
Mo 5-6.7
Cu 1.0-4
B 0.005 Max.
Nb 1 Max.
N 0.4 Max.
Ce + La 0.4 Max.
______________________________________ the amount of nitrogen being not greater than that which can be retained in solution, the amount of cerium plus lanthanum being the amount added as misch metal, and the balance essentially iron.
Claim 2
Dependent Claim
105 words
An austenitic stainless corrosion resistant alloy having good resistance to pitting and crevice corrosion in chloride bearing media combined with resistance to corrosion in oxidizing media consisting essentially in weight percent of about ______________________________________
C 0.06 Max.
Mn 1.00 Max.
Si 0.50 Max.
P 0.03 Max.
S 0.03 Max.
Cr 22-26
Ni 32.5-37
Mo 5-6.7
Cu 1.0-4
B 0.005 Max.
Nb 1 Max.
N 0.4 Max.
Ce + La 0.4 Max.
______________________________________ the amount of nitrogen being not greater than that which can be retained in solution, the amount of cerium plus lanthanum being the amount added as misch metal, and the balance essentially iron.
Claim 3
Dependent Claim
22 words
The alloy set forth in claim 1 which contains a maximum of 0.03 w/o carbon, and a maximum of 0.35 w/o niobium.
Claim 4
Dependent Claim
17 words
The alloy set forth in claim 1 which contains about 0.015-0.025 w/o carbon and 0.15-0.25 w/o niobium.
Claim 5
Dependent Claim
13 words
The alloy set forth in claim 1 which contains about 3.0-3.5 w/o copper.
Claim 6
Dependent Claim
19 words
The alloy set forth in claim 1 which contains 0.001-0.0035 w/o boron, and no more than 0.05 w/o nitrogen.
Claim 7
Dependent Claim
19 words
The alloy set forth in claims 1, 2, 3, 4, or 5 which contains at least 5.2 w/o molybdenum.
Claim 8
Dependent Claim
20 words
The alloy set forth in claim 2 which contains more than 24 w/o chromium, and more than 6 w/o molybdenum.
Claim 9
Dependent Claim
24 words
The alloy set forth in claims 2 or 3 which contains no more than 23.5 w/o chromium, and no more than 5.5 w/o molybdenum.
Claim 10
Dependent Claim
17 words
The alloy set forth in claim 1 which contains about 23.5-24.5 w/o chromium, and 5.5-6.2 w/o molybdenum.
Claim 11
Dependent Claim
18 words
The alloy set forth in claim 3 which contains about 23.5-24.5 w/o chromium, and about 5.5-6.2 w/o molybdenum.
Claim 12
Dependent Claim
20 words
The alloy set forth in claims 9 or 10 which contains about 32.5-34.5 w/o nickel, and about 3.0-3.5 w/o copper.
Claim 13
Dependent Claim
26 words
The alloy set forth in claims 9 or 10 which contains no more than about 0.0035 w/o boron and no more than about 0.05 w/o nitrogen.
Claim 14
Dependent Claim
15 words
The alloy set forth in claim 12 which contains at least about 0.0015 w/o boron.
Claim 15
Dependent Claim
31 words
The alloy set forth in claim 12 which contains no more than about 0.50 w/o manganese, no more than about 0.40 w/o silicon, and no more than about 0.03 w/o phosphorus.
Claim 16
Dependent Claim
16 words
The alloy set forth in claim 14 which contains no more than about 0.005 w/o sulfur.
Claim 17
Dependent Claim
16 words
The alloy set forth in claim 6 which contains no more than about 0.005 w/o sulfur.
Claim 18
Dependent Claim
18 words
The alloy set forth in claims 9 or 10 which contains no more than about 0.005 w/o sulfur.
Claim 19
Dependent Claim
132 words
A corrosion resistant austenitic stainless article having good resistance to pitting and crevice corrosion in chloride bearing media combined with resistance to corrosion in oxidizing media and having the composition of an austenitic stainless alloy which in weight percent consists essentially of about ______________________________________
C 0.06 Max.
Mn 1.00 Max.
Si 0.50 Max.
P 0.03 Max.
S 0.03 Max.
Cr 22-26
Ni 32.5-37
Mo 5-6.7
Cu 1.0-4
B 0.005 Max.
Nb 1 Max.
N 0.4 Max.
Ce + La 0.4 Max.
______________________________________ the amount of nitrogen being not greater than that which can be retained in solution, the amount of cerium plus lanthanum being the amount added as misch metal, the balance essentially iron, and annealed at a temperature high enough above 955 C to minimize the formation of harmful secondary phases.
Claim 20
Dependent Claim
132 words
A corrosion resistant austenitic stainless article having good resistance to pitting and crevice corrosion in chloride bearing media combined with resistance to corrosion in oxidizing media and having the composition of an austenitic stainless alloy which in weight percent consists essentially of about ______________________________________
C 0.06 Max.
Mn 1.00 Max.
Si 0.50 Max.
P 0.03 Max.
S 0.03 Max.
Cr 22-26
Ni 32.5-37
Mo 5-6.7
Cu 1.0-4
B 0.005 Max.
Nb 1 Max.
N 0.4 Max.
Ce + La 0.4 Max.
______________________________________ the amount of nitrogen being not greater than that which can be retained in solution, the amount of cerium plus lanthanum being the amount added as misch metal, the balance essentially iron, and annealed at a temperature high enough above 955 C to minimize the formation of harmful secondary phases.
Claim 21
Dependent Claim
54 words
The article set forth in claim 18 in wrought form which consists essentially in weight percent of about ______________________________________
C 0.015-0.025
Mn 0.50 Max.
Si 0.40 Max.
P 0.03 Max.
S 0.005 Max.
Cr 23.5-24.5
Ni 32.5-34.5
Mo 5.5-6.2
Cu 3.0-3.5
B 0.0015-0.0035
Nb .15-0.25
N 0.05 Max.
Ce + La
0.3 Max.
______________________________________