Stainless steel alloy with improved radiopaque characteristics
Abstract
The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved radiopaque characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about C Mn Si P S ≦0.030 ≦2.000 ≦0.750 ≦0.023 ≦0.010 Cr Mo Ni Fe “X” 12.000- 0.00- 10.000- 46.185- 2.000- 20.000 3.000 18.000 74.000 10.000 whereby variable “X” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, Tungsten or Iridium. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved radiopaque characteristics.
Claims
exact text as granted — not AI-modifiedWe claim:
1 . A modified series 300 stainless steel alloy which provides increased radiopaque characteristics over standard 300 stainless steel.
2 . A steel alloy as recited in claim 1 , wherein said alloy is used for fabricating intravascular stents.
3 . A steel alloy as recited in claim 1 , wherein said steel alloy consisting essentially of, in weight percent, about
C
Mn
Si
P
S
Cr
Mo
Ni
Fe
“X”
≦0.030
≦2.000
≦0.750
≦0.023
≦0.010
12.000-
0.00-
10.000-
46.185-
2.000-
20.000
3.000
18.000
74.000
10.000
whereby variable “x” could be comprised from a group consisting of Ir.
4 . A steel alloy as recited in claim 3 , wherein a portion of Iridium replaces a portion of Iron.
5 . A steel alloy as recited in claim 3 , wherein a portion of Iridium replaces a portion of Molybdenum.
6 . A steel alloy as recited in claim 3 , wherein a portion of Iridium replaces a portion of both Iron and Molybdenum.
7 . A modified series 300 stainless steel alloy which provides increased radiopaque characteristics over standard 300 stainless steel, said alloy consisting essentially of, in weight percent, about
C
Mn
Si
P
S
Cr
Mo
Ni
Ir
≦0.030
≦2.000
≦0.750
≦0.023
≦0.010
12.000-
2.000-
10.000-
2.000-
20.000
3.000
18.000
10.000
and the balance is essentially iron.
8 . A modified series 300 stainless steel alloy which provides increased radiopaque characteristics over standard 300 stainless steel, said alloy consisting essentially of, in weight percent, about
C
Mn
Si
P
S
Cr
Mo
Ni
Ir
≦0.030
≦2.000
≦0.750
≦0.023
≦0.010
12.000-
0.00-
10.000-
2.000-
20.000
3.000
18.000
10.000
and the balance is essentially iron.
9 . A modified series 300 stainless steel alloy which provides increased radiopaque characteristics over standard 300 stainless steel, said alloy consisting essentially of, in weight percent, about
C
Mn
Si
P
S
Cr
Mo
Ni
Fe
“X”
≦0.030
≦2.000
≦0.750
≦0.023
≦0.010
12.000-
0.00-
10.000-
46.185-
2.000-
20.000
3.000
18.000
74.000
10.000
whereby variable “X” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, Tungsten or Iridium.Join the waitlist — get patent alerts
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