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Utilizing 26 high-precision cold rolling mills and 6 cold drawing machines, we ensure dimensional accuracy and superior mechanical properties.
ASTM B163 Monel 400 Condenser Tube
Nickel-Copper Alloy | UNS N04400 | Seawater & HF Acid Grade
ASTM B163 | ASME SB163 | Marine Condenser GradeRelated Products
Introduction
ASTM B163 Monel 400 Condenser Tube is a nickel-copper alloy (UNS N04400) built around a simple but effective composition: at least 63% nickel balanced by 28-34% copper, with small amounts of iron and manganese. The two elements form a continuous solid solution, so the alloy is single phase and has no precipitates to be attacked. This makes it exceptionally resistant to seawater at any velocity, to brackish and brine solutions and to hydrofluoric acid, one of the few media in which stainless steels fail quickly. Pitting is rare, and chloride stress corrosion cracking, which affects austenitic stainless steel, essentially does not occur.
ASTM B163 covers seamless nickel and nickel-alloy condenser and heat exchanger tube, with tight dimensional control for rolling into tubesheets. In the annealed condition the minimum tensile strength is 480 MPa, yield strength 170 MPa and elongation 35%, giving very good formability for U-bends and expanded joints. The copper content gives a natural resistance to marine biofouling, so seawater-cooled condensers keep cleaner surfaces than stainless alternatives, which helps heat transfer. Thermal conductivity is moderate at about 22 W/m·K, well above stainless 316, and the alloy remains ductile down to cryogenic temperatures.
Typical service includes seawater-cooled power and marine condensers, desalination feedwater heaters, offshore firewater and cooling lines, caustic soda evaporators, hydrofluoric acid alkylation units and reducing acid process equipment. Limits include poor performance in oxidizing acids such as nitric acid and in aerated ammonia or mercury-bearing media, and stress cracking can occur in hot, concentrated hydrofluoric acid vapor if the tube is under tension, so stress relieving is recommended after heavy cold work. Sulfur-bearing atmospheres above about 315°C also attack the alloy, so it should not be used in hot sulfur-containing gases.
Specifications
| Material Grade | Monel 400 (UNS N04400) |
| Standard | ASTM B163, ASME SB163 |
| Outer Diameter | 9.53mm - 50.8mm |
| Wall Thickness | 0.89mm - 3.4mm |
| Length | Up to 18000mm / U-Bend |
| Finish | Annealed, Bright or Pickled |
Chemical Composition
| Ni | Cu | Fe | Mn | C |
| ≥63 | 28-34 | ≤2.5 | ≤2.0 | ≤0.3 |
Ni-Cu Alloy Seawater Grade
Mechanical Strength
Comprehensive Info
| MOQ | 100kg |
| Lead Time | 35 - 50 Days |
| Testing | ET & Hydro-test |
| Thermal Conductivity | About 22 W/m·K |
Key Applications
Seawater Condensers Power plant and marine cooling tubes
HF Acid Units Alkylation and fluorine chemistry
Desalination Feedwater heaters and brine heaters
Advantages
Seawater Proven
Resists seawater at any velocity with few pits.
No Chloride SCC
Nickel-copper structure is immune to chloride cracking.
Biofouling Resistant
Copper content slows marine growth on surfaces.
Cryogenic Ductility
Stays tough at very low temperatures.
About Jiangsu Jend Tube Co.,Ltd.
As China ASTM B163 Monel 400 Condenser Tube Manufacturers and Wholesale ASTM B163 Monel 400 Condenser Tube Factory, Established in 2011 and is a manufacturing enterprise with a complete manufacturing cycle from raw material selection to finished product delivery. The company currently has more than 100 employees, covers an area of 30015 square meters, and has a registered capital of 48 million yuan, annual production capacity of 3800 tons.
The company has passed ISO9001:2015 quality certification, domestic pressure vessel TS certification, and foreign pressure vessel PED certification. With rich experience and mature technology, we have been expanding our market internationally. At present, our products are exported to more than 50 countries and regions including Europe, America, Southeast Asia, and the Middle East.
The company adheres to different production norms and standards such as the American standard (ASTM), the European standard (EN), the German standard (DIN), the Japanese standard (JIS), the Russian standard (GOST), and the Chinese standard (GB).
Our company specializes in and customizes various specifications of Martensite TP410 (0Cr13, 1Cr13), Ferrite TP405 (1Cr13Al), TP430 (1Cr17), TP444 (0Cr18Mo2), TP439, TP409 (0Cr11Ti), It is also proficient in manufacturing Austenitic seamless stainless steel pipes of series such as TP304(L/H), TP316(L/H/Ti), TP310S, TP317, TP321(H) and TP347(H). Duplex such as S31803, S2205, S32750, S32304, and Nickel-based alloys Monel400, Monel600, Monel800, GH3030, 904L, Inconel 625, etc.
The company mainly produces seamless steel pipes with the following specifications: outer diameter: 3.18mm to 406.4mm, wall thickness: 0.3mm to 20mm, and the longest length is 25000mm. Additionally, it can customize seamless steel pipes with special materials and specifications according to customer requirements. The company attaches great importance to scientific innovation. The staff of the company vigorously develop technological research and development.
Jiangsu Jend Tube Co.,Ltd. will continuously accumulate professional knowledge and capabilities, striving to become a leader in the domestic market and even the world market. Strive to be the most reassuring pipe manufacturing enterprise for customers.
Precision Manufacturing and Process Optimization
We rely on precision equipment and optimized production technologies to achieve outstanding mechanical performance and consistent product quality.
Cold Rolling and Cold Drawing
Solution Heat Treatment
Natural gas solution treatment furnaces and BA solution treatment furnaces optimize the material's grain structure, enhancing corrosion resistance.
Precision Straightening and Polishing
10 straightening machines and 8 finishing polishing machines guarantee product surface smoothness and dimensional accuracy.
Automated Inspection and Quality Assurance
Real-time monitoring systems ensure the stable quality of every batch of products.
Usage Tips
Avoid Oxidizing Acids
Nitric acid and aerated ammonia attack Monel 400; choose a nickel-chromium alloy instead.
Stress Relieve After Cold Work
Heavy cold work in HF service can lead to stress cracking, so relieve stresses before commissioning.
Services
U-Bending
Bends for condenser bundles.
Eddy Current Testing
Full-length screening.
Tubesheet Fit-Up
End finish matched to your drawing.
Logistics
30% T/T Deposit / L/C at sight. Tubes are end capped, wrapped and packed in plywood cases with desiccant for long marine transit.
Standards
ASTM B163
ASME SB163
ASTM B165 (Related)
ISO 9001
Frequently Asked Questions
What is Monel 400 mainly used for?
Seawater, brine and hydrofluoric acid service.
Is Monel 400 resistant to chloride stress corrosion cracking?
Yes, it is essentially immune.
Why is it good for marine condensers?
It resists seawater and copper content reduces biofouling.
What media should be avoided?
Oxidizing acids like nitric acid and aerated ammonia.
Is it magnetic?
Slightly, at or below room temperature.
Can it be U-bent?
Yes, with 35% elongation it forms well.
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