Nickel-containing Alloys For Caustic Soda
Type: Plate, Pipe Grade: Nickel 200/201, Monel 400, Monel K500, Inconel 600/601/625, Incoloy
800/825, Hastelloy C22/C276/B2 430, 444, XM-33, XM-27, 304/304L, 316/316L, Alloy 20, Alloy 28,
S31254, 2304 (S32304), 2205 (S32205), 2507(S32750), 7-Mo Plus(S32950), C70600, C71500.
Plate Standard: ASTM B162, ASTM B127, ASTM B168, ASTM B424, ASTM B443, ASTM B575,
ASTM B625, ASTM B333, ASTM A240, ASTM B171 Pipe Standard: ASTM B161, ASTM B165,
ASTM B167, ASTM B163, ASTM B444, ASTM B622, ASTM A268, ASTM A312, ASTM B407,
ASTM B729, ASTM B668, ASTM B466, ASTM A790
Nickel-containing alloys many are used in Caustic Soda
Type: Plate, Pipe
Grade: Nickel 200/201, Monel 400, Monel K500, Inconel 600/601/625, Incoloy 800/825,
Hastelloy C22/C276/B2 430, 444, XM-33, XM-27, 304/304L, 316/316L, Alloy 20, Alloy 28,
S31254, 2304 (S32304), 2205 (S32205),2507(S32750), 7-Mo Plus(S32950), C70600, C71500.
Plate Standard: ASTM B162, ASTM B127, ASTM B168, ASTM B424, ASTM B443, ASTM B575,
ASTM B625, ASTM B333, ASTM A240, ASTM B171 Pipe Standard: ASTM B161, ASTM B165,
ASTM B167, ASTM B163, ASTM B444, ASTM B622, ASTM A268, ASTM A312, ASTM B407,
ASTM B729, ASTM B668, ASTM B466, ASTM A790 Plate Dimension:
W 1000 - 4000mm x L 1000 - 12000mm x T 3 - 80mm
Pipe Size: NPS 1/2" - 48 x SCH 5S - XXS
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Table 1 Nominal composition of nickel-containing alloys many are used in Caustic Soda
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composition, %
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ASTM Spec.b
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Alloy
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UNS
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Plate
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Pipe
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Number a
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Ni
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C
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Cr
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Mo
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Cu
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Fe
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Group I – Commercially pure (C.P.) nickel and nickel-copper alloys
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200
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N02200
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99.5
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0.08
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-
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-
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-
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0.2
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B162
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B161
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201
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N02201
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99.5
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0.01
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-
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-
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-
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0.2
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B162
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B161
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400
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N04400
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66.5
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0.2
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-
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-
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Bal
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1.2
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B127
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B165
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K500
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N05500
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66.5
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0.25
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-
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-
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Bal
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1.2
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B127
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B165
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Group II – Chromium-containing nickel alloys
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600
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N06600
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76
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0.08
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15.5
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-
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-
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8
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B168
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B167
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601
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N06601
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60
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0.05
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23
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-
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-
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Bal
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B168
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B167
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825
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N08825
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42
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0.03
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21.5
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3
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2.25
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30
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B424
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B163
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625
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N06625
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61
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0.05
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21.5
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9
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-
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2.5
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B443
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B444
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C-22/622
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N06022
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56
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0.01
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21.5
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13.5
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-
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4
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B575
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B622
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C-276
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N10276
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58
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0.01
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15.5
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16
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-
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5.5
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B575
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B622
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33
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R20033
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32
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0.08
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33
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1.6
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3
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32
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B625
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B622
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59
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N06059
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60
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0.01
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23
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15.5
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-
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0.7
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B575
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B622
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Group III - Nickel-molybdenum alloys
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B-2
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N10665
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69
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0.01
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1
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28
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-
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2
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B333
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B622
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Ni-Resist (castings)
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Type 1
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F41000
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15
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2
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2
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-
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-
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Bal
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-
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-
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Type 2
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F41002
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20
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2
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2
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-
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-
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Bal
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-
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-
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Type D2
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F43000
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20
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2
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2
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-
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-
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Bal
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-
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-
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Ferritic stainless steels
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430
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S43000
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-
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0.05
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17
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-
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-
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Bal
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A240
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A268
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444
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S44400
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-
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0.02
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18
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2
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-
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Bal
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A240
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A268
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XM-33
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S44626
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-
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0.03
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26
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1
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-
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Bal
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A240
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A268
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XM-27
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S44627
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-
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0.005
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26
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1
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-
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Bal
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A240
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A268
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4月29日
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S44700
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-
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0.005
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29
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4
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-
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Bal
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A240
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A268
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Austenitic stainless steels
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304
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S30400
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8
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0.04
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18
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-
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-
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Bal
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A240
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A312
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304L
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S30403
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8
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0.02
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18
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-
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-
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Bal
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A240
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A312
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316
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S31600
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10
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0.04
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16.5
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2.1
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-
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Bal
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A240
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A312
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316L
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S31603
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10
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0.02
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16.5
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2.1
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-
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Bal
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A240
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A312
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800
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N08800
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33
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0.07
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21
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-
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-
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Bal
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A240
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B407
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20
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N08020
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33
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0.02
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19.5
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2.2
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3.2
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Bal
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A240
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B729
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28
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N08028
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32
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0.03
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27
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3.5
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1
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Bal
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B709
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B668
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6%Moc
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S31254
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18
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0.01
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20
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6.2
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0.7
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Bal
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A240
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A312
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6%Moc
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N08367
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24
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0.01
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21
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6.2
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-
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Bal
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A240
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A312
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Table 1 Nominal composition of nickel-containing alloys many are used in Caustic Soda
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Composition, %
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ASTM Spec.b
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UNS
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Seamless tube and pipe
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Alloy
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UNS
Number a
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Ni
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C
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Cr
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Mo
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Cu
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Fe
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Plate
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Duplex stainless steel
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2304
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S32304
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4
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0.02
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23
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0.3
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-
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Bal
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A240
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A790
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2205
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S32205
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5
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0.02
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22
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3.2
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-
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Bal
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A240
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A790
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2507
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S32750
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7
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0.02
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25
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4
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-
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Bal
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A240
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A790
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7-Mo Plus
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S32950
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4
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0.03
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27.5
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2
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-
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Bal
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A240
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A790
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S32906
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7
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0.02
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29
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2.3
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-
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Bal
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A240
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A790
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Copper-nickel alloys
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Oct-90
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C70600
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10
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-
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-
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-
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Bal
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1.2
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B171
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B466
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70-30
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C71500
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31
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-
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-
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-
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Bal
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0.8
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B171
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B466
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a - UNS numbers beginning with an “N” indicate a nickel alloy, but the definition of a nickel alloy is different
than that used by ASTM.
b - in ASTM specifications, most nickel alloys fall into the “B” specifications. However, due to a redefinition of
a nickel alloy, a few alloys such as Alloy 20 are being reclassified as stainless steels, and will be included in
the “A” specifications. That work is still in progress.
c - the 6% Mo alloys are a series of stainless steels, many of which are proprietary, all with roughly 6%Mo
content and roughly equivalent in performance.
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