Monel Fasteners are nickel alloy fasteners with 29-33 % copper content also known by the trade name Nickel-Copper Alloys. It has high corrosion resistance to acids and alkalis with high mechanical properties and ductility. Being very difficult to machine , Monel Fasteners can be hardened and available in different variation like Monel 400, Monel 500 etc Monel 500 has additions of aluminum and titanium, which adds toughness to monel 400.
Applications: Monel fasteners are used for aerospace applications, oil refining and production, marine applications, drilling, rigging etc
Below are the most common alloys of monel.
| Trade Name | ASTM/AISIAlloy type | UNS | %Copper | %Aluminium | %Titanim | %Ferrous | %Mangenese | %Silicon | %Ni |
|---|---|---|---|---|---|---|---|---|---|
| Monel 400 | B 127,B 164 | N04400 | 28-34 | 2.5 max | 2.0 max | 63 min | |||
| Monel401 | N04401 | 28-34 | 2.5 max | 2.0 max | 63 min | ||||
| Monel404 | N04404 | 28-34 | 2.5 max | 2.0 max | 63 min | ||||
| Monel K-500 | B 865 | N05500 | 27-33 | 2.3-3.15 | 0.35-0.85 | 2.0 max | 1.5 max | 63 min | |
| MonelR-405 | B 164 | N04405 | 28-34 | 2.5 max | 2.0 max | 0.5 max | 63 min | ||
Inconel Fasteners are nickel alloy fasteners with base of austenitic chromium and nickel also known by the trade name Nickel-Chromium Alloys. It has high corrosion resistance to acids and alkalis with high mechanical properties and ductility subjected to high pressure and heats both.
Inconel fasteners are difficult to machine and hot roll threading is done to ensure 100% thread strength. It forms a passivation oxide layer once heated and hence used at wide range of elevated temperatures.
Applications: Inconel fasteners are used for high-pressure vessels, heat exchangers, nuclear reactors etc.
Hastelloy Fasteners are nickel molybdenum chromium alloy fasteners with base of also known by the trade name Nickel-Chromium-moly Alloys. It has high corrosion resistance to acids and alkalis with high mechanical properties and high resistance to oxidation.
Hastelloy fasteners are difficult to machine and hot roll threading is done to ensure 100% thread strength. It forms a passivation oxide layer once heated and hence used at wide range of elevated temperatures.
Applications: Hastelloy fasteners are used for chemical processing industries, aerospace industries, oil and gas industries etc.