Overview
Monel 400 is a nickel-copper alloy that is hardened by cold working only. Monel 400 has low corrosion rate in flowing seawater, therefore it is widely used in marine applications. Monel 400 also has excellent resistance to stress corrosion cracking in most freshwaters. Monel 400 can be used in temperatures up to 1000 ºF. The alloy has great mechanical properties at subzero temperatures.
Stub Ends are fittings used in place of welded flanges where rotating back up flanges are desired. They are also called Lap Joints and Vanstone Flared Laps. A rotating back up flange seats itself against the back surface of the Stub End. When bolts are added, the clamping action of the bolts presses the rotating back up flange against the back of the Stub End. The gasket surface of the Stub End then presses against a gasket and another gasket surface providing joints like standard flange joints. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint.
Our high quality stub ends (Butt weld fittings) are tested and verified for durability, accuracy and precision. The stub ends are manufactured in all standard dimensions. The stub ends are provided with a standard weld bevel and can be available in squared, flanged, victaulic and threaded ends. We offer stub ends at highly competitive prices.
Specification
ASTM B366/B366M Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings.
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 | – |
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 % |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
Applications
- 1. Marine engineering.
- 2. Chemical and hydrocarbon processing equipment.
- 3. Gasoline and freshwater tanks.
- 4. Crude petroleum stills.
- 5. De-aerating heaters.
- 6. Boiler feed water heaters and other heat exchangers.
- 7. Valves, pumps, shafts, fittings, and fasteners.
- 8. Industrial heat exchangers.
- 9. Chlorinated solvents.
- 10. Crude oil distillation towers.
