Austenitic alloy material
Abstract
An austenitic alloy material of the present disclosure contains, in mass %, C: more than 0 to 0.200%, Si: more than 0 to 3.00%, Mn: more than 0 to 3.00%, P: more than 0 to 0.050%, S: more than 0 to 0.050%, Ni: 40.00 to 80.00%, and Cr: 10.00 to 35.00%, and also contains one or more kinds of element selected from a group consisting of Sn, Zn, Pb, Sb, As, and Bi, and further contains one or more kinds of element selected from a group consisting of Cu, Mo, Co, W, Ti, Nb, V, B, N, rare earth metal, Al, Ca, and Mg, with the balance being Fe and impurities. Fn1 is less than 20, and Fn2 is higher than 21 and less than 50. Fn 1 = 177.84 + 11.12 Si - 24.36 Mn - 8.11 Cu - 1.61 Cr - 1.78 Ni - 2.68 Mo Fn 2 = ( Sn + Zn + Pb + Sb + As + Bi ) × 10 3
Claims
exact text as granted — not AI-modified1 . An austenitic alloy material having a chemical composition comprising, in mass %,
C: more than 0 to 0.200%, Si: more than 0 to 3.00%, Mn: more than 0 to 3.00%, P: more than 0 to 0.050%, S: more than 0 to 0.050%, Ni: 40.00 to 80.00%, and Cr: 10.00 to 35.00%, and also comprising one or more kinds of element selected from a group consisting of: Sn: more than 0 to 0.1000%, Zn: more than 0 to 0.0100%, Pb: more than 0 to 0.0100%, Sb: more than 0 to 0.0100%, As: more than 0 to 0.0010%, and Bi: more than 0 to 0.0010%, and further comprising one or more kinds of element selected from a group consisting of: Cu: more than 0 to 5.00%, Mo: more than 0 to 20.00%, Co: more than 0 to 3.00%, W: more than 0 to 7.00%, Ti: more than 0 to 1.00%, Nb: more than 0 to 0.10%, V: more than 0 to 0.50%, B: more than 0 to 0.0050%, N: more than 0 to 0.200%, rare earth metal: more than 0 to 0.100%, Al: more than 0 to 0.500%, Ca: more than 0 to 0.0100%, and Mg: more than 0 to 0.0150%, with the balance being Fe and impurities, wherein: Fn1 defined by Formula (1) is less than 20, and Fn2 defined by Formula (2) is higher than 21 and less than 50;
Fn
1
=
177.84
+
11.12
Si
-
24.36
Mn
-
8.11
Cu
-
1.61
Cr
-
1.78
Ni
-
2.68
Mo
(
1
)
Fn
2
=
(
Sn
+
Zn
+
Pb
+
Sb
+
As
+
Bi
)
×
10
3
(
2
)
where, a content in percent by mass of a corresponding element is substituted for each symbol of an element in Formulae (1) and (2), and if an element is not contained, “0” is substituted for the corresponding symbol of an element.
2 . The austenitic alloy material according to claim 1 , wherein:
when an average grain diameter in units of μm in an outer layer of the austenitic alloy material is defined as D ave , Fn3 defined by Formula (3) is higher than 0.20, and Fn4 defined by Formula (4) is 1000 to 5000.
Fn
3
=
Fn
2
/
D
a
v
e
(
3
)
Fn
4
=
Fn
2
×
D
a
v
e
.
(
4
)
3 . The austenitic alloy material according to claim 1 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.050%, Si: more than 0 to 0.50%, Mn: more than 0 to 0.50%, P: more than 0 to 0.025%, S: more than 0 to 0.010%, Cu: 2.00 to 4.00%, Ni: 44.00 to 50.00%, Cr: 20.00 to 25.00%, Mo: 5.00 to 7.00%, W: 2.00 to 5.00%, and Fe: 12.00 to 20.00%.
4 . The austenitic alloy material according to claim 1 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.150%, Si: 1.00 to 2.50%, Mn: more than 0 to 1.00%, P: more than 0 to 0.010%, S: more than 0 to 0.010%, Cu: 1.50 to 3.00%, Cr: 28.00 to 32.00%, Mo: 1.00 to 3.00%, Ti: more than 0 to 1.00%, and Fe: 2.00 to 6.00%.
5 . The austenitic alloy material according to claim 1 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.050%, Si: more than 0 to 0.50%, Mn: more than 0 to 0.50%, P: more than 0 to 0.030%, S: more than 0 to 0.015%, Cu: more than 0 to 0.50%, Cr: 27.00 to 31.00%, Fe: 7.00 to 15.00%, and Ni: 58.00 to 80.00%.
6 . The austenitic alloy material according to claim 2 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.050%, Si: more than 0 to 0.50%, Mn: more than 0 to 0.50%, P: more than 0 to 0.025%, S: more than 0 to 0.010%, Cu: 2.00 to 4.00%, Ni: 44.00 to 50.00%, Cr: 20.00 to 25.00%, Mo: 5.00 to 7.00%, W: 2.00 to 5.00%, and Fe: 12.00 to 20.00%.
7 . The austenitic alloy material according to claim 2 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.150%, Si: 1.00 to 2.50%, Mn: more than 0 to 1.00%, P: more than 0 to 0.010%, S: more than 0 to 0.010%, Cu: 1.50 to 3.00%, Cr: 28.00 to 32.00%, Mo: 1.00 to 3.00%, Ti: more than 0 to 1.00%, and Fe: 2.00 to 6.00%.
8 . The austenitic alloy material according to claim 2 , wherein the chemical composition comprises, in mass %:
C: more than 0 to 0.050%, Si: more than 0 to 0.50%, Mn: more than 0 to 0.50%, P: more than 0 to 0.030%, S: more than 0 to 0.015%, Cu: more than 0 to 0.50%, Cr: 27.00 to 31.00%, Fe: 7.00 to 15.00%, and Ni: 58.00 to 80.00%.Join the waitlist — get patent alerts
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