Inconel Alloy 751 is a nickel-chromium alloy which has been acclaimed for its high temperature environment corrosion resistance properties. Such chemical composition commonly contains nickel (67%), chromium (15%), iron (7.5%), aluminum (3.1%), titanium (2.5%), and a trace of other constituents. This alloy shows outstanding mechanical properties but also at high temperatures that let you use it in aerospace , chemical processing and gas turbine components. Inconel 751 has superior strength and oxidation resistance up to 1800°F(982°C). Inconel is commonly used in many industrial applications. Its characteristics are contributing to it as one of the preferred metals for the production of critical components whose service conditions are extreme. The tables, charts and the documents mentioning its various grades properties and composition in details are provided in there for further reference and also for usage by the specialized industries.
Inconel Alloy 751 is a precipitation-hardened nickel-chromium alloy possessing the best strength at high temperatures and corrosion resistance. Its chemical formulation usually comprises of nickel (Ni), chromium (Cr), aluminium (Al), titanium (Ti) and traces of iron (Fe) and cobalt (Co) elements. Grade tables indicate the percentages of the elements with which these materials are composed thus guaranteeing uniformity and quality. This alloy has widespread uses in aerospace, chemical processing, and gas turbine components, where reliability under severe conditions is of primary concern. The use of grade tables is necessary for the accurate and smooth production and operation of an equipment.
Elements | Ni | Cr | Fe | Ti | Mn | Al | Nb | Cu | Si | C | S |
---|---|---|---|---|---|---|---|---|---|---|---|
Min (%) | - | 14 | 5 | 2 | - | 0.90 | 0.70 | - | - | - | - |
Max (%) | 70 | 17 | 9 | 2.60 | 1 | 1.50 | 1.20 | 0.50 | 0.50 | 0.10 | 0.010 |
Advantages:
High temperature stability: Retains strength and stability at elevated temperatures.
Oxidation resistance: Exhibits excellent resistance to oxidation at high temperatures.
Corrosion resistance: Serviceable in extreme conditions such as marine, acidic, and hostile climate environments.
Fatigue strength: Offers better fatigue strength for durability under fluctuating load conditions.
Disadvantages:
Cost: Costly compared to other materials commonly used in the construction industry.
Machinability: Hard to machine, requiring special tools and methods.
Brittleness: May break under low temperatures due to brittleness.
Welding: Welding may require preheating and post-weld heat treatments.
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