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Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of nickel-containing alloys for caustic soda in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.

Nickel-containing alloys many are used in Caustic Soda

Nickel-containing alloys are specially engineered materials designed to provide exceptional resistance to caustic soda (NaOH) and other highly alkaline environments. These alloys, including Alloy 20, Alloy 200, and Inconel 625, are widely used in the chemical, chlor-alkali, and industrial processing industries for tanks, pipes, heat exchangers, and other equipment exposed to concentrated alkalis. With excellent corrosion resistance, high-temperature performance, and long service life, nickel alloys ensure reliable operation in harsh chemical environments. Available in seamless and welded pipes, sheets, plates, and custom-fabricated components, they meet international standards such as ASTM, ASME, UNS, and NACE, making them ideal for global B2B supply and industrial applications.

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Nickel-Containing Alloys Many Are Used In Caustic Soda

Nickel Containing Alloys for Caustic Soda

Nickel containing alloys for caustic soda environments are widely used in chlor-alkali plants, sodium hydroxide processing systems, evaporators, heat exchangers, alkali storage tanks, and chemical transfer pipelines due to their exceptional resistance to caustic corrosion and stress corrosion cracking.

Compared with conventional stainless steel materials, high nickel alloys provide superior stability in concentrated sodium hydroxide solutions, especially under elevated temperatures and high-pressure operating conditions.

Xi'an Dongmeng Group Co., Ltd supplies industrial-grade nickel alloy plates, pipes, tubes, rods, forgings, fittings, and custom fabricated components for demanding caustic soda processing applications worldwide.

Our nickel alloys are engineered for:

High concentration caustic soda

Hot alkali environments

Chlor-alkali plants

High-temperature sodium hydroxide systems

Corrosive chemical transfer pipelines

Industrial alkaline processing equipment

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

Recommended Nickel Alloys for Caustic Soda Applications

Alloy Grade	UNS Number	Main Features
Nickel 200	N02200	Excellent resistance to pure caustic alkalis
Nickel 201	N02201	Low carbon grade for elevated temperature applications
Alloy 400	N04400	Good alkali and seawater resistance
Alloy 600	N06600	High-temperature oxidation resistance
Alloy 625	N06625	Excellent corrosion and stress cracking resistance
Alloy C276	N10276	Outstanding resistance in mixed corrosive media

Products Specifications

Table 1 Nominal composition of nickel-containing alloys many are used in Caustic Soda
		composition, %						ASTM Spec.b
Alloy	UNS Number a	Ni	C	Cr	Mo	Cu	Fe	Plate	Pipe
Group I – Commercially pure (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	-	-	Bal	1.2	B127	B165
K500	N05500	66.5	0.25	-	-	Bal	1.2	B127	B165
Group II – Chromium-containing nickel alloys
600	N06600	76	0.08	15.5	-	-	8	B168	B167
601	N06601	60	0.05	23	-	-	Bal	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
C-22/622	N06022	56	0.01	21.5	13.5	-	4	B575	B622
C-276	N10276	58	0.01	15.5	16	-	5.5	B575	B622
33	R20033	32	0.08	33	1.6	3	32	B625	B622
59	N06059	60	0.01	23	15.5	-	0.7	B575	B622
Group III - Nickel-molybdenum alloys
B-2	N10665	69	0.01	1	28	-	2	B333	B622
Ni-Resist (castings)
Type 1	F41000	15	2	2	-	-	Bal	-	-
Type 2	F41002	20	2	2	-	-	Bal	-	-
Type D2	F43000	20	2	2	-	-	Bal	-	-
Ferritic stainless steels
430	S43000	-	0.05	17	-	-	Bal	A240	A268
444	S44400	-	0.02	18	2	-	Bal	A240	A268
XM-33	S44626	-	0.03	26	1	-	Bal	A240	A268
XM-27	S44627	-	0.005	26	1	-	Bal	A240	A268
29-4	S44700	-	0.005	29	4.0	-	Bal	A240	A268
Austenitic stainless steels
304	S30400	8	0.04	18	-	-	Bal	A240	A312
304L	S30403	8	0.02	18	-	-	Bal	A240	A312
316	S31600	10	0.04	16.5	2.1	-	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
28	N08028	32	0.03	27	3.5	1	Bal	B709	B668
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

Table 1 Nominal composition of nickel-containing alloys many are used in Caustic Soda
		Composition, %						ASTM Spec.b
Alloy	UNS Number a	Ni	C	Cr	Mo	Cu	Fe	Plate	Seamless tube and pipe
Duplex stainless steel
2304	S32304	4	0.02	23	0.3	-	Bal	A240	A790
2205	S32205	5	0.02	22	3.2	-	Bal	A240	A790
2507	S32750	7	0.02	25	4	-	Bal	A240	A790
7-Mo Plus	S32950	4	0.03	27.5	2	-	Bal	A240	A790
	S32906	7	0.02	29	2.3	-	Bal	A240	A790
Copper-nickel alloys
90-10	C70600	10	-	-	-	Bal	1.2	B171	B466
70-30	C71500	31	-	-	-	Bal	0.8	B171	B466

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.

Fabrication & Machining Performance

Nickel containing alloys for caustic soda applications offer excellent fabrication characteristics for industrial processing equipment manufacturing.

Machining Features

Stable machining performance

Excellent hot forming capability

Good cold working properties

Precision CNC machining adaptability

Excellent dimensional stability

Available Processing Services

CNC machining

Precision cutting

Rolling

Forging

Welding fabrication

Custom flange manufacturing

Heat treatment

Surface finishing

Welding Performance Analysis

Nickel alloys used in caustic soda systems demonstrate excellent weldability under controlled procedures.

Recommended Welding Methods

GTAW / TIG welding

GMAW / MIG welding

SMAW welding

Plasma arc welding

Welding Advantages

Low cracking sensitivity

Stable heat affected zone

Excellent corrosion resistance after welding

Suitable for pressure vessel fabrication

Corrosion Resistance Performance

Resistance to Caustic Soda

Nickel containing alloys exhibit outstanding resistance to:

Sodium hydroxide (NaOH)

Potassium hydroxide (KOH)

High-temperature alkali solutions

Chlor-alkali chemical media

Key Corrosion Advantages

Traceable mill test certificates (MTC) for every batch

Non-destructive testing (NDT) for critical pressure components

Packaging & Shipping

Export Packaging Solutions

Wooden export crates

Waterproof packaging

Anti-rust protection

Fumigation-free plywood cases

Container loading protection

Shipping Support

Sea freight

Air freight

Railway transportation

Global port delivery

Door-to-door logistics support

Why Choose Us

Xi'an Dongmeng Group Co., Ltd Advantages

Professional nickel alloy manufacturer

Rich chemical industry project experience

Stable raw material supply chain

Precision CNC machining capability

Strict quality inspection system

Fast delivery capability

OEM customization support

Global industrial export experience

FAQ

Q1: Which nickel alloys are most suitable for handling caustic soda?
A: Alloy 20 (UNS N08020) and Alloy 200 (UNS N02200) are widely preferred for their excellent resistance to concentrated NaOH solutions. Inconel 625 (UNS N06625) can be used in high-temperature or mixed chemical environments.

Q2: What temperature range can these alloys withstand in caustic soda applications?
A: Most nickel alloys resist corrosion in caustic environments up to 250–300°C, depending on the alloy grade, NaOH concentration, and exposure duration.

Q3: Are these alloys available in both seamless and welded forms?
A: Yes. Pipes, tubes, and sheets are available in seamless and welded options. Custom fabrication is also possible for specialized equipment.

Q4: Can you supply these alloys in plate, sheet, or pipe form?
A: Absolutely. We provide pipes, tubes, sheets, plates, flanges, and other fabricated components according to ASTM, ASME, and UNS standards.

Q5: What surface finishes are available?
A: Pickled and passivated, mill finish, or polished surfaces are available depending on your application requirements.

Q6: Do you provide material certifications and quality assurance reports?
A: Yes. All products come with Mill Test Certificates (MTC), and third-party verification (ISO 9001, NACE, PED, CE) can be arranged.

Q7: How resistant are nickel alloys to concentrated caustic soda over long-term use?
A: Alloy 20 and Alloy 200 are highly resistant to long-term exposure. Proper selection based on temperature and concentration ensures minimal corrosion and extended service life.

Q8: Can these alloys be used in the chlor-alkali industry?
A: Yes, nickel alloys are ideal for tanks, piping, and heat exchangers in chlor-alkali production due to their high alkali resistance.

Q9: Do you provide custom cutting, bending, or machining services?
A: Yes, we offer full custom fabrication, including cutting, bending, flanging, and machining to meet your equipment design specifications.

Q10: Are international export standards supported?
A: Yes. Our products comply with ASTM, ASME, UNS, ISO, and NACE standards, making them suitable for global B2B supply and chemical industry applications.