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Inconel 718 is a renowned nickel-chromium alloy, known for its strength, corrosion resistance, and ability to withstand extreme temperatures. Commonly used in aerospace, chemical processing, and oil and gas applications, this alloy is shaped into various bars, each with unique properties and applications.
These usages include precision machining, aerospace components, mold making, and marine and oil rig structures, where durability is paramount. Here are some of the common varieties of Inconel 718 bars:
inconel bar stock
Bought in bulk for machine shops, fabricators, and manufacturers. These shops value the pristine condition and uniformity of the bar stock for producing high-quality components.
Inconel 718 round bar
Cylindrical bars used to create fasteners, shafts, and other circular components. Their consistent round shape and mechanical strength make them ideal for aerospace engine parts, which require high durability.
Inconel 718 flat bar
These non-cylindrical bars have a regularly flat shape, usually employed in tooling, jigs, and fixtures. They also serve as structural components in industries where strength and resistance to high temperatures are required, such as in airplane parts and molds for casting other metals.
Inconel 718 square bar
These are strikingly prismatic bars normally utilized to create structural components like brackets and beams, which need robust materials. They are also used to manufacture surgical instruments, connector, and aerospace parts.
Inconel 718 threaded bar
These are inconel bars with screw-like threads on the whole or part of their surface. They are commonly employed in industries like construction and mining to tie structures and components together securely, maintaining integrity even under high-stress conditions.
The 718 Inconel bar is renowned for its remarkable mechanical properties and resistance to harsh environments. Below are some of the key features:
Corrosion resistance
Since Inconel 718 comprises a higher percentage of nickel and chromium, it is exceptionally resistant to most corrosive elements, such as acids and saltwater. This makes it ideal for its applications in chemical processing, marine environments, and aerospace components.
High-Temperature Strength
At elevated temperatures, Inconel 718 retains its strength and toughness, thus not losing its shape upon the application of heat. For this reason, it is useful for jet engine parts, gas turbines, and other components that are constantly exposed to high temperatures.
Robust Mechanical Properties
This alloy possesses excellent tensile strength and fatigue resistance, even in distorted forms. Its unique mechanical features make it ideal for components that regularly experience high levels of stress and pressure, especially in extreme environments.
Semi-Critical Heat Treatment
Inconel 718 can be precipitate hardened through a relatively simple heat treatment process. This feature makes it convenient to fabricate and machine into various shapes and components, without the need for extremely complex heat treatment processes.
Work Hardening
Work done on this alloy caused it to harden over time and improved its durability. It makes it practically useful in high-wear applications where longer service life is critical, such as in mining and oil extraction equipment.
Selecting the desired Inconel 718 alloy bar depends on the specific application and requirements. To help with the selection, below are some key factors to consider:
Shape
There is a wide variety of Inconel 718 bar shapes, such as round, flat, and square, which are suitable for different uses. While round bars are used to make shafts and other rotating components, and flat bars are used in fittings and equipment handles, square bars are mostly used to make brackets and other structural components.
Choose the 718 bar diameter
Inconel 718 bars are available in a formidable range of diameters, from as small as 6mm for fine, detailed work to as large as 100mm for heavy-duty industrial uses. Normally, the 718 bars with a smaller diameter are used in low-stress areas within the engine components, while those with a larger diameter are used in extreme conditions, such as rigging and heavy machinery.
Sourcing
Inconel 718 is not readily available across all metal dealerships. When buying in bulk on the retail, such as the Inconel 718 bar stock, one should consider sourcing them from a reputable supplier with a long experience in offering this alloy, such as in the metal works stores. One should also ensure that the dealer provides this alloy in conformance to international quality standards.
Non machinable features
Normally, since Inconel 718 comprises nickel, iron, and chromium, which are relatively hard metals, it can pose a significant challenge to the machinist attempting to work on it. To ease the machining process, one can go for options with a reduced work-hardening tendency and those that have been pre-treated using cutting fluids.
Bar stock length
Depending on the usage, Inconel 718 stocks can be found in a variety of lengths, from 1m for small projects to 5m for large industrial works. For small, one-off projects, it is advisable for buyers to purchase shorter stocks. For larger projects or long-term usage, they should buy longer stocks so that they can cut them to size as desired.
A1: The price of Inconel 718 can vary considerably based on a range of factors, such as the current market trends of the metals used to make them, that is, nickel, chromium, iron, and cobalt. Moreover, it is significantly affected by the form it takes, the amount that is being purchased, and the eventual destination. However, as of August 2023, it was reported that the price of inconel 718 per kg was approximately $112, though prices have been known to fluctuate periodically due to wider economic factors.
A2: The Inconel 718 superalloy is ideal for such space and chemical plant applications as turbine blades, seals, combustion chambers, and exhaust systems. It is also used to manufacture fasteners, springs, and other complex geometric components in the auto industry.
A3: The 718 inconel bar price commonly tends to increase when the price of nickel increases. When the form of the alloy or the quantity purchased changes, the price can also change. For instance, purchasing a taller stock might be priced per kilogram, but per a meter, the stock might price per kilogram. The buyer's location also affects prices through shipping costs.
A4: Inconel 718 is commonly used to produce parts such as tooling and molding equipment, marine structures, downhole shafting and spears, and chemical reactor vessels and piping systems used in the hydrocarbon processing and uranium mining industries. It is also used to manufacture aerospace components such as engine parts, which must endure extreme heat and pressure.
Inconel 718 bars offer outstanding performance in extreme environments for different industries. Purchasing the right inconel 718 radius stock or bar requires consideration of such essential factors as the usage environment, bar shape, diameter, and length. Large buyers should buy these metals in bulk from a reputed retailer on Alibaba for quantity discounts and cut them into smaller pieces for use.
