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Various Types of Nickel Based Alloys

An alloy is simply a metal made from more than one element. There is variety of alloys and each alloy has its own specific chemical and mechanical properties. The alloys made finished products have certain properties that pure metal does not contain. By combining these metals, one can achieve the better substance through certain procedures. The Aluminium, stainless steel, titanium, copper and nickel based alloys are commonly used in different industries.

The below given various nickel alloys are used in different applications depending on their resistance ability at elevated temperatures, strength, toughness and other properties.

ALLOY 600

ALLOY 600 is a nickel-chromium-iron alloy and used in typical applications like jet engines, steam generators, spark electrodes, furnace retort seals, food and chemical processing. It offers high resistant to corrosion and heat, excellent mechanical properties, high strength and good workability.

ALLOY 601

ALLOY 601 has better oxidation resistant, reduces environments, and possesses high temperature strength and good carbonization resistant. This nickel-chromium alloy is widely used in electronic components, industrial furnaces and thermocouple protection tubes.

ALLOY 625

Due to excellent resistance to oxidation and corrosion, ALLOY 625 is used in a wide spectrum of applications like in seawater applications, aerospace industry, heat exchangers, and nuclear reactors. The nickel based alloy has good resistance to alkalis and organic acids, exhibits excellent strength and toughness at high temperatures.

ALLOY DS

ALLOY DS is a nickel-chromium-iron alloy and used for furnace parts, heat treatment and vitreous enameling equipment. ALLOY DS is available in standard product forms such as round, plate, sheet, strip, tube, pipe, and wire. Like other nickel alloys, it also possesses good oxidation and corrosion resistant.

ALLOY 330

ALLOY 330 remains stable during long-time exposure to high temperature. ALLOY 330 can be readily fabricated using standard procedures for stainless steel and nickel alloys. It is used for industrial heating furnaces, cyanide salt pots, retorts and muffles.

ALLOY C276

ALLOY C276 has universal corrosion resistance and greater fabricability and can be hot and cold by conventional procedures. ALLOY C276 are resistant to wet chloride gas, hypochlorite, chlorine dioxide solutions and maintains high strength at room temperatures. It is widely used in sulfuric acid reactors, heat exchangers, Sour gas wells and reaction vessels.

ALLOY 602CA

ALLOY 602CA has resistance to oxidation at higher temperatures, even under cyclic conditions. This nickel based alloy due to its high strength and high temperature used for furnace construction and industrial engineering. It has excellent creep rupture strength.

ALLOY 690

ALLOY 690 is a high-chromium nickel alloy and exhibits excellent resistance to oxidation and high-temperature atmospheres. Due to its high strength and good metallurgical stability, ALLOY 690 is used widely in nuclear power, chemicals, heat-treatment and electronics industries.

ALLOY 617

These are used in gas turbines, industrial furnace components and applications where high-temperature corrosion resistance is important. ALLOY 617 has good ductility, exceptional strength and finds its use in the gas turbines, petrochemical processing and heat-treating equipment.

ALLOY X

ALLOY X is a super nickel based alloy that delivers strong strength characteristics at very high temperature. It is typically used in industrial furnace, petrochemical, gas turbine and jet engines operations. ALLOY X has good resistance to carburization and chloride stress-corrosion cracking.

Quest4alloys is a leading supplier of high quality alloys like Aluminium Alloys, Nickel Alloys, Copper Alloys, Titanium Alloys and Stainless steel alloys all over the world. We also provide a wide range of stainless steel grades. We have experience to effectively market a wide range of industrial metals in various forms. We deliver high performance alloys stock at competitive prices and best level of services to our customers.

About the Author

Marsh Shaun is writing this article to let the people know about various nickel alloys and their chemical and mechanical properties. He has great knowledge about making various substances using alloys like alloy 600, alloy 690 through certain procedures to get full value out of them.

How can I calibrate a thermocouple?

I'm trying to calibrate a K-type thermocouple, but I need something with a reference temperature that I can trust to within .1 C. Is ice water trustworthy?

The triple-point-of-water is one of the fixed points in temperature calibration. The typical thermocouple has a specification of about ± 2.0 °C over the entire operating span and calibration uncertainties of about 0.25 °C. These uncertainties are usually only achieved in a calibration laboratory. The TPW cell is a laboratory standard and properly set up produces 0.01 °C to within 0.0002 °C and sometimes a bit better.

If you are trying to calibrate a probe/meter combination a good ice bath should get you in the ball park (± 0.5 °C) and boiling water accounting for your elevation, should give you a second point to validate the linearity of your meter/probe combination. The dominant uncertainty in your calibration will likely be the resolution of your meter. To get uncertainties of near 0.1 °C at the time of use, you really need to go with a PRT.

If you are trying to calibrate the thermocouple only, you need to connect the leads to copper wires and submerge this junction in an ice bath and apply known temperatures to the thermocouple bead or probe. The output will be in microvolts and can be checked for compliance to the NBS/NIST tables using a good nanovoltmeter or a differential measurement scheme and a calibrator.

There's lots of stuff about temperature calibration on the Omega Engineering website. Yellow Springs Instruments also used to have information. You may also check out Hart Scientific (Fluke Corporation).

Good Luck! Oh... by the way a TPW cell goes for about $750 (US).

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