Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
131 words
A corrosion resistant austenitic stainless steel alloy consisting essentially in weight percent of about ______________________________________
(w/o)
______________________________________
C 0.03-0.1
Mn 4-11
Si 0.6 Max.
Cr 20-23
Ni 14-18
Mo 5.05-5.6
B 0.01 Max.
Ce + La 0.4 Max.
Al 0.1 Max.
[C + N 0.23 Min.]
______________________________________ in which nitrogen ranges from a minimum of 0.15 w/o to no more than the amount that can be retained in solid solution, the minimum amount of carbon plus nitrogen being equal to: ##EQU4## the balance being essentially iron, and the elements being balanced so that cold rolled annealed specimens prepared with a crevice and tested in accordance with ASTM G48-76 in 10 w/o FeCl 3 .6H 2 O at 50 C. for 72 hours have a weight loss of less than 0.3 gram.
Claim 2
Dependent Claim
131 words
A corrosion resistant austenitic stainless steel alloy consisting essentially in weight percent of about ______________________________________
(w/o)
______________________________________
C 0.03-0.1
Mn 4-11
Si 0.6 Max.
Cr 20-23
Ni 14-18
Mo 5.05-5.6
B 0.01 Max.
Ce + La 0.4 Max.
Al 0.1 Max.
[C + N 0.23 Min.]
______________________________________ in which nitrogen ranges from a minimum of 0.15 w/o to no more than the amount that can be retained in solid solution, the minimum amount of carbon plus nitrogen being equal to: ##EQU4## the balance being essentially iron, and the elements being balanced so that cold rolled annealed specimens prepared with a crevice and tested in accordance with ASTM G48-76 in 10 w/o FeCl 3 .6H 2 O at 50 C. for 72 hours have a weight loss of less than 0.3 gram.
Claim 3
Dependent Claim
15 words
The alloy set forth in claim 1 containing no more than about 5.4 w/o molybdenum.
Claim 4
Dependent Claim
15 words
The alloy set forth in claim 1 containing no more than about 7.5 w/o manganese.
Claim 5
Dependent Claim
17 words
The alloy set forth in claims 1, 2 or 3 containing no more than 0.6 w/o nitrogen.
Claim 6
Dependent Claim
16 words
The alloy set forth in claims 1, 2 or 3 containing at least 0.20 w/o nitrogen.
Claim 7
Dependent Claim
14 words
The alloy set forth in claim 5 containing no more than 0.5 w/o nitrogen.
Claim 8
Dependent Claim
14 words
The alloy set forth in claim 5 containing no more than 0.08 w/o carbon.
Claim 9
Dependent Claim
21 words
The alloy set forth in claim 7 containing no more than 0.07 w/o aluminum, and no more than 0.005 w/o boron.
Claim 10
Dependent Claim
18 words
The alloy set forth in claim 7 containing no more than 0.05 w/o aluminum, and 0.0015-0.0035 w/o boron.
Claim 11
Dependent Claim
13 words
The alloy set forth in claim 7 containing at least 0.06 w/o carbon.
Claim 12
Dependent Claim
21 words
The alloy set forth in claim 10 containing no more than 0.03 w/o phosphorus and no more than 0.005 w/o sulfur.
Claim 13
Dependent Claim
14 words
The alloy set forth in claim 11 containing no more than 0.07 w/o aluminum.
Claim 14
Dependent Claim
14 words
The alloy set forth in claim 11 containing no more than 0.05 w/o aluminum.
Claim 15
Dependent Claim
11 words
The alloy set forth in claim 2 containing 0.06-0.08 w/o carbon.
Claim 16
Dependent Claim
15 words
The alloy set forth in claim 14 containing 4-6 w/o manganese and 0.20-0.25 w/o nitrogen.
Claim 17
Dependent Claim
15 words
The alloy set forth in claim 15 containing 20.5-21.5 w/o chromium, and 14.5-15.5 w/o nickel.
Claim 18
Dependent Claim
15 words
The alloy set forth in claim 16 containing no more than about 0.005 w/o boron.
Claim 19
Dependent Claim
11 words
The alloy set forth in claim 16 containing 0.0015-0.0035 w/o boron.
Claim 20
Dependent Claim
133 words
A corrosion resistant austenitic article which consists essentially in weight percent of about: ______________________________________
(w/o)
______________________________________
C 0.03-0.1
Mn 4-11
Si 0.6 Max.
Cr 20-23
Ni 14-18
Mo 5.05-5.6
B 0.01 Max.
Ce + La 0.4 Max.
Al 0.1 Max.
[C + N 0.23 Min.]
______________________________________ in which nitrogen ranges from a minimum of 0.15 w/o to no more than the amount that can be retained in solid solution, the minimum amount of carbon plus nitrogen being equal to: ##EQU5## the balance being essentially iron, and in which the elements are balanced so that cold rolled annealed specimens thereof prepared with a crevice and tested in accordance with ASTM G48-76 in 10 w/o FeCl 3 .6H 2 O at 50° C. for 72 hours have a weight loss of less tha 0.3 gram.
Claim 21
Dependent Claim
133 words
A corrosion resistant austenitic article which consists essentially in weight percent of about: ______________________________________
(w/o)
______________________________________
C 0.03-0.1
Mn 4-11
Si 0.6 Max.
Cr 20-23
Ni 14-18
Mo 5.05-5.6
B 0.01 Max.
Ce + La 0.4 Max.
Al 0.1 Max.
[C + N 0.23 Min.]
______________________________________ in which nitrogen ranges from a minimum of 0.15 w/o to no more than the amount that can be retained in solid solution, the minimum amount of carbon plus nitrogen being equal to: ##EQU5## the balance being essentially iron, and in which the elements are balanced so that cold rolled annealed specimens thereof prepared with a crevice and tested in accordance with ASTM G48-76 in 10 w/o FeCl 3 .6H 2 O at 50° C. for 72 hours have a weight loss of less tha 0.3 gram.
Claim 22
Dependent Claim
14 words
The article set forth in claim 19 containing no more than 5.4 w/o molybdenum.
Claim 23
Dependent Claim
14 words
The article set forth in claim 19 containing no more than 7.5 w/o manganese.
Claim 24
Dependent Claim
26 words
The article set forth in claim 19 containing no more than 5.4 w/o molybdenum, no more than 7.5 w/o manganese, and at least 0.20 w/o nitrogen.
Claim 25
Dependent Claim
14 words
The article set forth in claim 22 containing no more than 0.08 w/o carbon.
Claim 26
Dependent Claim
13 words
The article set forth in claim 23 containing at least 0.06 w/o carbon.
Claim 27
Dependent Claim
11 words
The article set forth in claim 24 containing 4-6 w/o manganese.
Claim 28
Dependent Claim
33 words
The article set forth in claim 25 which includes at least one autogenous weld and which contains 20.5-21.5 w/o chromium, 14.5-15.5 w/o nickel, no more than 0.25 w/o nitrogen, and 0.0015-0.0035 w/o boron.