ASTM SB163 UNS N04400 Power Plant Pipes

ASTM SB163 UNS N04400 Power Plant Pipes
ASTM B163 UNS N04400, also known as Monel 400 pipe, is a nickel-copper alloy tube specifically formulated for seamless tubing used in heat exchangers and condensers in power plants. Its corrosion resistance, high strength, and wide temperature range make it suitable for demanding applications in the power generation industry.
What are the specifications for Monel 400 pipe?
This grade of nickel-copper alloy is available in ASTM B165 and B725 specifications. Pipe is available in seamless, welded, electric-resistance-welded, and fabricated forms. ASME SB165 Monel 400 seamless pipe conforms to ASTM, ASME, and API standards and is available in nominal inside diameters ranging from 15 inches to 150 inches.

ASME SB163 UNS N04400 Pipe Specification Chart
| ASTM Specification | ASTM B163 |
|---|---|
| Standard | ASTM, ASME, JIS, AISI, AMS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB |
| ASTM B163 UNS N04400 Seamless Pipe Size | 4 to 219mm W. T.: 0.5 to 20mm |
| ASTM B163 N04400 Welded Pipe Size | 5.0 - 1219.2 mm |
| ASME SB 163 N04400 EFW Pipe size | 5.0 - 1219.2 mm |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| B163 N04400 Pipe Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| ASME SB 163 UNS N04400 Pipe Length | Single Random, Double Random, Standard & Cut length Pipe |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF, NO.1, NO.4, 2B, BA, HL, 8K, Mirror finish, etc |
| Form | ASME SB 163 UNS N04400 Pipe are available in form of Round, Square, Hollow, Rectangular, Hydraulic, Coiled, Straight Pipes, "U" Shape, Pan Cake Coils etc. |
| Type of SB 168 UNS N04400 Pipe | Seamless / ERW/ EFW / Welded / Fabricated / CDW / DOM / CEW ASME SB 163 UNS N04400 Pipe |
| ASME SB 163 UNS N04400 Pipe End | Plain End, Beveled End, Treaded Pipe, Screwed ends |
| Marking on ASME SB163 N04400 Pipe | All ASTM B163 UNS N04400 Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
Monel Alloy 400 Pipe and Tube Chemical Composition
| Ni | C | Al | Mn | Si | Fe | Cu | S |
| 63.0 min | 0.3 max | 0.50 max | 2.0 max | 0.5 max | 1.0 – 2.5 | 28.0 – 34.0 | 0.02 max |
ASTM B163 Monel Alloy 400 Pipe and Tube Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensilee Strength | Elongation |
| 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 35,000 , MPa – 240 | Psi – 80,000 , MPa – 550 | 40 % |
ASTM B163 N04400 Tube Schedule Chart
|
1/8" IPS(.405"O. D.) |
3 1/2" IPS( 4.000"O. D.) |
|---|---|
|
SCH 40, 80 |
SCH 10, 40, 80, 160, XXH |
|
1/4" IPS(.540"O. D.) |
4" IPS(4.500"O. D.) |
|
SCH 10, 40, 80 |
SCH 10, 40, 80, 160, XXH |
|
3/8" IPS(.675"O. D.) |
5" IPS( 5.563"O. D.) |
|
SCH 10, 40, 80 |
SCH 10, 40, 80, 160, XXH |
|
1/2" IPS(.840"O. D.) |
6" IPS(6.625"O. D.) |
|
SCH 5, 10, 40, 80, 160, XXH |
SCH 5, 10, 40, 80, 120, 160, XXH |
|
3/4" IPS(1.050"O. D.) |
8 " IPS(8.625"O. D.) |
|
SCH 10, 40, 80, 160, XXH |
SCH 5, 10, 40, 80, 120, 160, XXH |
|
1" IPS:(1.315′O. D.) |
10" IPS(10.750"O. D.) |
|
SCH 5, 10, 40, 80, 160, XXH |
SCH 10, 20, 40, 80 (.500), TRUE 80(.500) |
|
1-1/4" IPS(1.660"O. D.) |
12" IPS(12.750"O. D.) |
|
SCH 10, 40, 80, 160, XXH |
SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500) |
|
1-1/2" IPS(1.900"O. D.) |
14" IPS(14.000"O. D.) |
|
SCH 10, 40, 80, 160, XXH |
SCH10 (.188), SCH40 (.375) |
|
2" IPS(2.375"O. D.) |
16" IPS(16.000"O. D.) |
|
SCH 10, 40, 80, 160, XXH |
SCH10(.188), SCH40(.375) |
|
2 1/2" IPS(2.875"O. D.) |
18" IPS (18.000"O. D.) |
|
SCH 10, 40, 80, 160, XXH |
SCH-40 (.375) |
|
3" IPS( 3.500"O. D.) |
|
|
SCH 5, 10, 40, 80, 160, XXH |
Power Plant Applications
Monel 400 is widely used in power generation facilities, particularly nuclear and fossil fuel plants, for its excellent heat transfer and corrosion resistance.
Heat Exchangers and Condensers: Due to its efficient heat transfer, the alloy is often used for seamless tubing in heat exchangers, boiler feedwater heaters, and condensers.
Piping: The alloy is often used in piping systems handling corrosive fluids, such as seawater scrubbers in tanker inert gas systems.
Equipment Components: Other applications include pumps, valves, and other equipment components where high-temperature and corrosion resistance are critical.

Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.





