Nickel-containing Alloys For HCl Acid Systems

Nickel-containing Alloys For HCl Acid Systems

Nickel-containing Alloys for Chlorine, Hydrogen Chloride, and Hydrochloric Acid systems

 

Type: Plate, Pipe

Grade: Nickel 200/201, Monel 400, Inconel 600/625, Incoloy 825, Hastelloy G30/G35/C22/C4/C276/C2000

B2/B3/B4, 304L, 316L, Incoloy 800, Alloy 20, S31254, N08367, N08926, S32654, S32205

Plate Standard: ASTM B162, ASTM B127, ASTM B168, ASTM B424, ASTM B443, ASTM B575, ASTM B582, ASTM B333, ASTM A240

Pipe Standard: ASTM B161, ASTM B165, ASTM B167, ASTM B163, ASTM B444, ASTM B622, ASTM A312, ASTM B407, ASTM B729, 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

Category:
Table 1 Nominal composition of nickel-containing alloys used in Chlorine, Hydrogen Chloride, and Hydrochloric Acid systems.
Nominal composition, % ASTM Spec.b
Alloy UNS

Number a

 Ni C Cr Mo Cu Fe Plate Seamless tube and pipe
Group I – C.P. Nickel and nickel-copper alloys
200 N02200 99.5 0.08 – – – 0.2 B162 B161
201 N02201 99.5 0.01 – – – 0.2 B162 B161
400 N04400 66.5 0.2 – – – 1.2 B127 B165
Group II – Chromium-containing nickel alloys
600 N06600 76 0.08 15.5 – – 8 B168 B167
825 N08825 42 0.03 21.5 3 2.25 30 B424 B163
625 N06625 61 0.05 21.5 9 – 2.5 B443 B444
G-30 N06030 42 0.01 29.5 5 1.8 15 B582 B622
G-35 N06035 55 0.02 33 8 – 2 B575 B622
C-22/622 N06022 56 0.01 21.5 13.5 – 4 B575 B622
C-4 N06455 66 0.01 16 15 – 5.5 B575 B622
C-276 N10276 58 0.01 15.5 16 – 5.5 B575 B622
59 N06059 60 0.01 23 15.5 – 0.7 B575 B622
686 N06686 56 0.01 21 16 – 2.5 B575 B622
C-2000 N06200 57 0.01 23 16 – 1.5 B575 B622
Group III – Nickel-molybdenum alloys
B-2 N10665 70.5 0.01 28 – – B333 B622
B-3 N10675 63 0.005 2 30 – 2 B333 B622
B-4 N10629 66 0.01 1 28 – 4 B333 B622
Table 1 Nominal composition of nickel-containing alloys used in Chlorine, Hydrogen Chloride and Hydrochloric Acid systems.
Nominal composition, % ASTM Spec.b
Alloy UNS

Number a

 Ni C Cr Mo Cu Fe Plate Seamless tube and pipe
Austenitic Stainless Steels
304L S30403 8 0.02 18 – – Bal A240 A312
316L S31603 10 0.02 16.5 2.1 – Bal A240 A312
800 N08800 33 0.07 21 – – Bal A240 B407
20 N08020 33 0.02 19.5 2.2 3.2 Bal A240 B729
6%Moc S31254 18 0.01 20 6.2 0.7 Bal A240 A312
6%Moc N08367 24 0.01 21 6.2 – Bal A240 A312
6%Moc N08926 25 0.01 20.5 6.2 1 Bal A240 A312
7%Mo S32654 22 0.01 24 7.3 0.5 Bal A240 A312
Duplex Stainless Steel
2205 S32205 5 0.02 22 3.2 – Bal A240 A790

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 800 and 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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