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Inconel Alloy 625 Chemical Composition, Grades, Tables and Document

Inconel Alloy 625 is a complex alloy best known for its anti-corrosion properties and workability at high temperatures that contains a number of elements. The main elements it is composed of are nickel, chromium and molybdenum. The other elements that are also present in its structure include iron, niobium, tantalum and a very small number of many others. These properties are provided by different ingredients whose actions in synergy give the material the ability to be used in applications where traditional materials cannot withstand the punishment, such as aerospace, chemical engineering, and marine engineering, to name a few. The more detailed technological requirements of ASTM B446, AMS 5666 and NACE MR0175 standards are combined for various applications which are provided in different grades. Detailed chemical composition, mechanical properties, and application suggestions complement the main body with tables charts and documentation, this ensures the excellent performance of the product even under the most severe environmental conditions.

Inconel Alloy 625 Chemical Composition And Grade Table

The high corrosion resistance grade of this Inconel Alloy 625 makes it one of the most popular materials in chemical plants, marine vessels and aerospace facilities that function in very challenging environment. It is made of nickel with precise chemical composition of which 88% is nickel and the increased amount of chromium and molybdenum in % are both significant elements. The alloy is for example a mixture of nearly 58 % nickel, 20-23 % chromium, 8-10 % molybdenum as well as even small quantities of niobium and tantalum. The mixture of these chemicals provides the alloy with very good tolerance to numerous aggressive chemicals such as acids, alkalis and high temperatures. The alloy is superior to the other metals in the fields where very high corrosion levels are encountered.

Inconel Alloy 625 Composition Table
Elements Ni Cr Fe Mo Nb Co Si P S
Min (%) - 20 - 8 3.15 - - - -
Max (%) 58 23 5 10 4.15 1 0.50 0.15 0.15

Advantages and Disadvantages of Inconel Alloy 625

    Advantages:

  • Corrosion resistance: It also has excellent resistance to a range of objectionable environments such as sea water and acid solutions.

  • High temperature strength: It offers comparatively superior strength and strength retention up to a temperature of 1,800°F (982°C).

  • Oxidation resistance: Its high temperature oxidation resistance makes it suitable to be used in oxidation and reduction conditions.

  • Versatility: As a valued material, it can be used across many sectors, aviation, chemical manufacturing, marine engineering etc.

    Disadvantages:

  • Cost: It is slightly pricey as compared with other alloys, and this could make it an expensive option for use in various applications.

  • Machinability: Aluminium alloy has very poor machining qualities, which demands the use of special tools and strategies in the construction of machinery.

  • Weldability challenges: This material requires rigorous energy input arrangements with respect to welding practices since the metal prefers cracking under heat impulses and weld porosity.

  • Sensitivity to sulfur: It is also, sensitive to embrittlement, may lose corrosion resistance when exposed to environments containing sulfur compounds.

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Raw Material Prices (Updated as on: 06 Oct 2024 01:52 PM) LIVE RATES

MetalsPrice/TonnePrice/KG
Nickel$17,750₹1,491.37
LME$17,831₹1,498.13
Copper$10,099₹848.47
LME$9,935₹834.69
Aluminum$2,636₹221.50
LME$2,665₹223.94
Zinc$3,160₹265.53
LME$3,170₹266.35
Lead$2,141₹179.90
LME$2,154₹180.99

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