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Waspaloy Nuts
Waspaloy (2.4654) nuts are known for their superb high strength at elevated temperatures. Waspaloy is a high performance nickel alloy combined with cobalt, chrome and molybdenum to create it’s unique combination of strength and high temperature stability.
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Similar to that of Inconel 718 nuts, Waspaloy nuts exceed the strength and stability of Inconel 718 at elevated temperatures beyond 1400°F. In addition, the oxidation resistance of Waspaloy nuts make it an ideal materials for high temperature applications like gas turbines engines, and a variety of other aerospace components. -
Tungsten Nuts
Tungsten nuts are known for their extreme high density; because of this unique attribute, they are often used for balancing rotating parts. Tungsten’s high mass also makes these nuts radiopaque. This allows tungsten nuts to block radiation and show up well on x-rays – even better than lead. Another unique attribute of tungsten is its extrmely high melting point of 3420°C. The high temperature stability of tungsten nuts make them ideal for some of the hottest vacuum furnace environments. Beyond their high mass and temperature stability, tungsten nuts are also very corrosion resistant.
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Tungsten nuts are usually made from tungsten alloys per ASTM B777, and range from 90% to 97% pure tungsten, alloyed with nickel and copper or nickel and iron. -
Titanium Nuts
Titanium fasteners are best known for being strong, lightweight, and corrosion resistant. They are critical to many industries including chlor alkali, marine, off-shore oil & gas, desalination, medical, and pulp and paper. Grade 2 and 5 are the most commonly used grades of titanium screws:
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• Grade 2 (UNS R50400 / 3.7035) :Commercially pure titanium and the most common grade for screws.
• Grade 5 (UNS R56400 / 3.7165): Superior strength-to-weight ratio for a unique combination of corrosion and high strength. -
Tantalum Nuts
Tantalum nuts are best known for its unmatched corrosion resistance and chemical inertness. Tantalum nuts have a similar corrosion resistance to that of glass, but all of the typical mechanical and electrical properties of a metal.
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Tantalum nuts are also extremely stable at high temperatures, since tantalum has a melting point around 3000°C. High temperature applications require vaccum or inert gas since tantalum may embrittle when used in oxygen rich environments above 250°C. Tantalum nuts are also one of the most bio-compatible metals available and is also radio-opaque due to its high density (16.68 g/cm3).
All tantalum nuts are available in commercially pure tantalum and tantalum 2.5% tungsten (Ta-2.5%W). -
Nickel 200 Nuts
Nickel 200 (2.4060) fasteners are made from commercially pure nickel and are best known for their excellent performance in caustic alkali solutions such as caustic soda (NaOH). Nickel 200 also exhibits good performance in acids, especially HF (Hydrofluoric Acid - anhydrous) and hydroxides – but can be attacked by common solutions of hydrochloric or sulfuric acids.
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MP159 Nuts
As aerospace engineering advances, so must the materials to meet the technological requirements of this industry. Nuts made from MP159 have been developed to provide a solution to high temperature, high strength components. MP159 nuts offer strength capabilities similar to other Cobalt Alloys (MP35N) but can be used at much higher temperatures - up to 1100°F, compared to MP35N’s usable limit of 800F. In addition, MP159 nuts can be used beyond 1100°F in short term situations.
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Molybdenum Nuts
Molybdenum nuts possesses a very high melting point of 2620°C, a low coefficient of thermal expansion and a high level of thermal conductivity. Because molybdenum nuts have the ability to withstand extremely high temperatures without changing shape, expanding or softening significantly, they are ideal for high strength / high temperature applications that are shielded from oxygen. Exposing molybdenum fastener to oxygen above 600°C will cause them to readily oxidize.
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As a result, molybdenum nuts find their way into high temperature vacuum furnaces, glass production, military and space applications where oxygen is not present. -
Inconel Nuts
Inconel® nuts and lock nuts, like Inconel 600, 601,625, 686, 718 & 725 nuts, are a family of nickel-chromium-molybdenum alloys used for their high strength at elevated temperatures and good corrosion resistance. Because of its high thermal stability, Inconel can be used in service temperatures ranging from cryogenic to 2200°F (982°C). The high alloy content of Inconel nuts enable it to withstand a wide variety of severe corrosive environments. In mild environments, such as the atmosphere, sea water, neutral salts, and alkaline media, there is almost no attack to Inconel nuts. In more severe corrosive environments the combination of nickel and chromium provides resistance to oxidizing chemicals, whereas the high nickel and molybdenum contents supply resistance to nonoxidizing environments.
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Incoloy Nuts
Not to be confused with Inconel, Incoloy nuts are made of a nickel alloy which contains iron and a lower content of nickel. Incoloy is essentially a more economical option to Inconel, yet with more restricted corrosion resistance and temperature limits. Typically, Incoloy is an ideal material for long-term exposure in high temperature environments due to its oxidation, carburization and creep resistance. Incoloy is widely used for its resistance to seawater, brine, sour gas and high chloride environments at elevated temperatures, which make it a popular choice in the oil and gas and power industries.
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The most commonly used grades of Incoloy nuts are Incoloy 800, 800H, 800HT; Incoloy 825; and Incoloy 925.
