ASTM B165 Monel 400 Nickel Alloy Chemical and Industrial Pipe
ASTM B165 Monel 400 Nickel Alloy Chemical and Industrial Pipe
ASTM B165 specifies cold-worked seamless tubing made from Monel 400 (UNS N04400). Monel 400 is a nickel-copper alloy known for its excellent corrosion resistance to seawater, steam, caustics, and many acids. This solid solution alloy offers good mechanical properties, high strength, good ductility, and weldability, making it suitable for demanding industrial applications in marine, chemical, and high-temperature environments. It maintains its strength from subzero to moderately high temperatures (up to 1000°F or 538°C) and is exceptionally resistant to stress corrosion cracking in both fresh and seawater.
What are the standards 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 diameter sizes ranging from 15 inches to 150 inches.
ASTM B165 N04400 chemical pipe is an alloy composed of nickel and copper, with a copper content of 28%-34% and a nickel content of ≥63%. ASTM B165 N04400 combines the precious metal properties of copper with the passivating properties of nickel, exhibiting excellent corrosion resistance. Therefore, it is widely used in desalination plants, heat exchangers, marine structure surfaces, desalination/salt production/petroleum refining plants, marine components, heat exchangers, valves for chemical/desalination plants, and pump components.
Monel 400 alloy (UNS N04400 or MCu-28-1.5-1.8 or Ni68Cu28Fe) is a nickel-based alloy that exhibits excellent corrosion resistance in seawater, chemical solvents, ammonia, sulfur chloride, hydrogen chloride, various acidic media (such as sulfuric acid, hydrofluoric acid, hydrochloric acid, phosphoric acid, and organic acids), alkaline media, salt, and molten salts. Monel 400 alloy possesses excellent mechanical properties and is widely used in low- to high-temperature environments. It offers excellent weldability and medium-to-high strength. Monel 400 pipe is primarily used in the chemical, petrochemical, and marine industries. It can be used to manufacture various heat exchange equipment, boiler feedwater heaters, petroleum and chemical pipelines, containers, towers, tanks, valves, pumps, reactors, shafts, and more.
ASTM B165 N04400 Nickel Alloy Pipe Chemical composition
| element | nickel | copper | iron | manganese | carbon | silicon | sulfur |
| Content(%) | 63.0min | 28min~34max | 2.5max | 2.0max | 0.3max | 0.5max | 0.024max |
Pressure Rating of ASTM B165 N04400 Nickel Alloy Pipe
| Monel 400 Pipe O.D. (in.) |
Wall Thickness of Monel 400 Pipe (inches) | |||||||
|---|---|---|---|---|---|---|---|---|
| 0.0035 | 0.0028 | 0.0049 | 0.0083 | 0.0095 | 0.0065 | 0.0109 | 0.0120 | |
| 1/4 | 4800 | 3700 | 7000 | 9500 | ||||
| 1/8 | 10100 | 7900 | ||||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/4 | 2200 | 4000 | 4600 | 3000 | ||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 1 | 2900 | 3400 | 2200 | 3900 | 4300 | |||
ASTM B165 N04400 Nickel Alloy Pipe Mechanical Properties
| Shape | Tensile strength |
Yield strength (0.2% Offset) |
Elongation (%) |
Hardness | |||
| ksi | MPa |
Brinell (3000-kg) |
Rockwell B | ||||
| stick | 70-110 | 480-760 | 25-85 | 170-585 | 50-5 | 110min | 60min |
| plate | 70-95 | 482-655 | 28-75 | 193-517 | 50-30 | 110-215 | 60-96 |
| sheet | 70-120 | 482-827 | 30-110 | 207-758 | 45-2 | 65min | |
| belt | 70-140 | 482-965 | 25-130 | 172-896 | 50-2 | 68min | |
| Seamless pipe | 70-130 | 482-896 | 25-110 | 172-758 | 50-3 | 100max | |
| Cold pull wire | 70-180 | 482-1241 | 30-170 | 207-1172 | 45-2 |
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.
