
Alloy 400 Tubing
1. Standard: ASTM B165、ASTM B163、ASTM B474、ASTM B725
2. Diameters: 6.35 - 254 mm
3. Wall thickness: 0.6 to 20mm
4. Length: Single Random Length, Double Random Length and Customized
5. Grades:Monel 400, UNS N04400, WNR.2.4360
Alloy 400 tubing is considered a very tough material with excellent mechanical properties, in subzero conditions as measured by impact testing. In addition, Alloy 400 performs well in temperatures up to 1000° F. Alloy 400 has a higher corrosion resistance than nickel in reducing conditions and a higher corrosion resistance than copper in oxidizing conditions. It is virtually unaffected by stress corrosion cracking (SCC) caused by chlorides and most freshwater conditions.
Monel 400 Tubing Applications:
- Marine engineering
- Chemical and hydrocarbon processing equipment
- Gasoline and freshwater tanks
- Crude petroleum stills
- Boiler feed water heaters and other heat exchangers
- Valves, pumps, shafts, fittings, and fasteners
- Industrial heat exchangers

Monel 400 UNS N04400 tubing Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel, Ni | Remainder |
| Copper, Cu | 28-34 |
| Iron, Fe | 2.5 max |
| Manganese, Mn | 2 max |
| Silicon, Si | 0.5 max |
| Carbon, C | 0.3 max |
| Sulphur, S | 0.024 |
MONEL 400 alloy Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength(annealed) | 517-620 MPa | 75-90 ksi |
| Yield strength | 172-345 MPa | 25-50 ksi |
| Modulus of elasticity | 179 GPa | 26000 ksi |
| Poisson's ratio | 0.32 | 0.32 |
2.4360 Monel 400 Pipe Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
Why Choose Us?
- EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificate (MTC)
- Raw Material Certificate
- Fumigation Certificate
- 100% Radiographic Inspection Report
- SGS Third Party Certification
- Surface Roughness Measurement
- Manufacturer Test Certificate
- PMI Inspection
- Hydrostatic Test
- Ultrasonic Test, etc.
ASTM B163 Monel 400 Tube Welding
Welding methods including gas-arc welding, metal-arc welding, gas-metal-arc welding and submerged-arc welding are recommended on this alloy.
Alloy 400 Welding Material
| Welding Electrodes | MONEL Welding Electrode 190 Nickel Welding Electrode 141 INCO-WELD A Electrode INCONEL Welding Electrode 112 |
| Fillers | MONEL Filler Metal 60 Nickel Filler Metal 61 INCONEL Filler Metal 625 |
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