
ASTM B165 Alloy 400 Pipe
1. Standard: ASTM B165, ASME SB 165, ASTM B163, ASME SB163, ASTM B474
2. Diameters: 4.0mm - 1219.2 mm
3. Wall thickness: 0.5mm - 20mm
4. Length: Single Random Length, Double Random Length and Customized
Monel 400(UNS N04400) is a corrosion-resistant alloy with nickel and copper as its main components. Its unique chemical composition (nickel content is about 63%~67%, copper is about 28%~34%, and contains a small amount of iron, manganese and other elements) gives it excellent performance in extreme environments.
monel 400 pipe manufacturer, supplier
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Material Testing of Monel 400 Pipe
- Hardness Test
- Chemical Analysis – Spectro Analysis
- Positive Material Identification – PMI Testing
- Flattening Test
- Micro and MacroTest
- Pitting Resistance Test
- Flaring Test
- Intergranular Corrosion (IGC) Test

corrosion resistance of monel N04400
Acidic environment
Monel 400 pipe performs well in non-oxidizing acids such as sulfuric acid, hydrochloric acid, and hydrofluoric acid, especially under low concentration acidic conditions, the corrosion rate is significantly lower than that of stainless steel.
Seawater and salt spray environment
Alloy N04400 pipe has strong resistance to seawater, chloride solution and salt spray corrosion, and almost no pitting or crevice corrosion occurs. It is suitable for offshore platform pipelines, seawater desalination equipment, etc.
High temperature corrosion
In high temperature environments below 480°C, it can still maintain stable anti-oxidation and anti-carburization properties, and can serve for a long time in heat exchangers and high temperature reactors.
Special media
Monel 400 pipe has outstanding tolerance to alkaline solutions, organic compounds and dry gases (such as chlorine and fluorine), and is an ideal material for valves and pump bodies in chemical equipment.
Alloy 400 Specifications
| Specifications |
ASTM B165 / ASME SB165 ASTM B163 / ASME SB163 ASTM B474 / ASME SB474 ASTM B725 / ASME SB725 |
| Dimensions | ASTM, ASME, and API |
| Size | 15″NB TO 150″NB IN |
| Specialized in | Large Diameter Size |
| Range | 6.35 mm OD up to 254 mm OD in 0.6 TO 20 mm thickness. |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
ASTM B165 400 Monel Pipe Sizes
| Types | Out diameter | Wall thickness | Length |
| Monel 400 Seamless Pipes (Custom Sizes) | 5.0 ~ 203.2mm | As per requirement | Upto 6 Meters |
ASTM B165 UNS N04400 Pipe Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.24max | 28.0-34.0 | 2.50 max | 63.00 min | – |
2.4360 Alloy 400 Pipe Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 |
40% |
Applicationn of Monel N04400 pipe
Chemical industry: manufacturing reactors, evaporator pipes in sulfuric acid and hydrofluoric acid production equipment, and pipelines for pickling equipment.
Marine engineering: seawater cooling systems, ship propeller shafts, submarine oil pipelines and desalination equipment.
Oil and gas: downhole tools, oil well casings and gas pipelines in highly acidic oil and gas wells containing hydrogen sulfide and carbon dioxide.
Nuclear industry: nuclear fuel processing equipment
Aerospace: rocket engine components
Alloy UNS N04400 Tubes Pressure Class
| Pipe O.D. | Wall Thickness of Pipe/Tube (inches) | |||||||
| (in.) | 0.028 | 0.035 | 0.049 | 0.065 | 0.083 | 0.095 | 0.109 | 0.12 |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
Monel 2.4360 Alloy pipe Dimensions
| PIPE PRODUCT FORM | DIMENSION |
| Cold drawn, bright annealed, seamless | 6.35 x 0.89 mm (¼" x 0.035") |
| Annealed, Cold Drawn | 6.35 x 1.7 mm (¼" x 0.065") |
| Annealed, Cold Drawn | 12.0 x 2.0 mm |
| bright annealed, seamless | 12.7 x 0.89 mm (½" x 0.035") |
| Annealed, Cold Drawn | 12.7 x 1.63 mm (½" x 0.064") |
| seamless; annealed | 33.40 x 4.55 mm (1"nb Sch80s) |
| Annealed, Cold Drawn | 48.26 x 2.77 mm (1½" nb sch10s) |
| Annealed, Cold Drawn | 48.26 x 3.68 mm (1½" nb sch40s) |
| seamless, annealed | 48.26 x 5.08 mm (1½" nb sch80s) |
| Annealed, Cold Drawn | 60.33 x 2.77 mm (2"nb sch10s) |
| Annealed, Cold Drawn | 88.90 x 5.49 mm (3"nb Sch40s) |
| Annealed, Cold Drawn | 114.3 x 3.05 mm (4"nb sch10s) |
FAQ
Q: About Alloy Monel 400 Pipe prices?
A: Prices from ranges $30 - $35 per kilogram, vary depending on size, wall thickness, supplier etc.
Q: How long does your delivery time take?
A: Delivery time is within 5-21 days
Q: Is There Sample Service?
A: Samples Are Provided Free Of Charge
Q: What Is The Minimum Order Quantity?
A: No Minimum Order Quantity
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer and is fixed with a fumigation wooden pallet.
Q: Exported Countries
A: Brazil, South Africa, Indonesia, India, Singapore, Malaysia, Iran, Russia, UAE, Chile, Laos, etc
Q: Can we visit your factory?
A: Of course, you are always welcome!
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