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Monel 400 is a solid solution alloy consisting of nickel and copper. While the nickel content is about 67%, the copper content in the Monel 400 pipe chemistry is about 23%. Typical of most nickel-containing alloys, this grade tends to have high strength even at high temperatures. Although Monel 400 seamless tubing is not recommended for use in temperatures above 1000°F.
The melting point of this Monel alloy is between 2370°F - 2460°F. The high melting point indicates better dimensional stability of ASTM B165 Alloy 400 seamless pipe, especially since high temperatures often cause changes in the flow of metal molecules, which alter their physical appearance. The marine engineering industry prefers ASTM B725 UNS N04400 welded pipe for a variety of operational purposes because of its higher copper content. Copper is known for its rich properties as an alloying agent in components such as Monel 400 rectangular tubes, including resistance to seawater or saline solutions.
Another feature that makes 400 Monel alloy square tube attractive in the marine industry is the alloy's low corrosion rate in fast-flowing brackish water. These properties, combined with the excellent resistance to stress corrosion cracking found in many freshwater sources, make this alloy indispensable.
1.Material:
UNS N04400
ASTM B165 UNS N04400 Chemical Composition:
| Monel400 | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr |
| 63.0 | 0.3 | / | 2.00 | 0.5 | 2.5 | / | 0.024 | / | / | |
ASTM B167 UNS N06601 Mechanical Properties:
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 35,000 , MPa – 240 | Psi – 80,000 , MPa – 550 | 40 % |
Equivalent Material Grade of Hastelloy C276 SMLS PIPE
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Monel400 | N04400 | 2.4360 | NU-30M | NiCu30Fe | NW 4400 | NA 13 | МНЖМц 28-2,5-1,5 |
| Size | ½” to 6” NB Sch 10s, 40s, & 80s, 160s |
| Wall Thickness | 0.1 - 60 mm |
| Monel Alloy 400 pipes Length |
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| Surface Finish | Cold Finish, Bright, Polished, Annealing, Pickling, or as per client requirements |
| Standard | JIS, AISI, ASME, ASTM, AMS, GB, DIN, EN, GOST |
| Monel Alloy 400 pipes Manufacturing types | Seamless, Welded, ERW, EFW |
| Manufacturing Shapes | Round, Square, Rectangle, Box Section |
| Monel Alloy 400 pipes Manufacturing Technology | Hot / Cold Formed |
| Inspection, Test Reports | EN 10204 3.1, Mill Test Certificates, PMI Test Reports, Chemical Reports, Mechanical Reports, NABL Approved Lab Reports, Visual Inspection Reports, Destructive and Non Destructive Test Reports, Third Party Inspection |
| Monel Alloy 400 pipes Technique | Cold Rolled Hot Rolled |
