Nickel Alloys
Scientific Information
| : Ni |
| : 28 |
| : 58.693 |
| : 1453 °C |
| : 8.9 |
| : transition metal |
Nickel is a hard, malleable, ferromagnetic metal found in large quantities in the earth's crust and core. Nickel has many desirable properties, including exceptional corrosion, oxidation and temperature resistance, high degree of ductility and formability, and these properties make it a desirable metal for making alloys. As a matter of fact, 90% of all nickel sold is purchased specially to make alloys. Nickel alloy is an alloy made by adding other elements on the basis of nickel and nickel will alloy readily with many other metals, including chromium, iron, molybdenum and copper. Nickel alloys offer a variety of benefits, for examples, superior corrosion resistance, high temperature resistance, high oxidation resistance and wear resistance, good formability, low expansion rate, increased durability, improved thermal conductivity, high strength, enhanced electrical conductivity and recyclable. And thus, the nickel alloys are a popular choice for many commercial and industrial applications.
Types
The commercial nickel alloys mainly include the following categories:
- Iron-nickel alloys: Nickel alloys that contain iron as the primary component. The alloys are of particular interest because a broad variety of qualitatively different magnetic properties can be obtained by adjusting the composition and the preparation process. The nickel content is range from 35% to 80%. There are three main groups of high-permeability iron-nickel alloys: the 80% nickel alloys, the 50% nickel alloys and the 36% nickel alloys. The high permeability of iron-nickel alloys makes them very useful materials for the electronic communications and electrical power engineering industries.
- Chromium-nickel alloys: Nickel alloys that contain chromium as the primary component. Chromium-nickel alloys are prized for their high corrosion resistance, high-temperature strength, and high electrical resistance. They mainly include Inconel, Hastelloy and Nichrome. Some of these alloys are precipitation hardening by adding aluminum and/or titanium and controlled precipitation hardening of chromium-nickel alloys lets metallurgists increase strength and hardness temperatures to about 1300 °F.
- Copper-nickel alloys: Nickel alloys that contain copper as the primary component, which mainly include Monel (a group of alloys containing nickel (63-70%), copper (28-34%), and other elements) and Cupronickel (a group of alloys containing nickel and copper in various ratios.) These alloys combine ready formability, a wide range of mechanical properties, and high corrosion resistance and thus they are widely used for marine applications.
- Titanium-nickel alloys: The most important property of titanium-nickel alloys is shape memory. The alloys deform their formed shape at a lower temperature, once heated to this so-called transition temperature, the alloys return to their original shape since they can remember their original shape. The transition temperature can be adjusted by controlling the composition of the alloys.
- Others: Other nickel alloys that contain a variety of other materials, including aluminum, cobalt, tungsten, and more.
Our Products
Alfa Chemistry is a manufacturer of standard & custom specialty metals & alloys. We now can provide various nickel alloys products including iron-nickel alloys, chromium-nickel alloys, copper-nickel alloys and others. Please click the link below for more details.
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