| Customization: | Available |
|---|---|
| Application: | Aviation, Electronics, Industrial, Medical, Chemical |
| Standard: | JIS, GB, DIN, BS, ASTM, AISI |
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Inconel751 alloy is an improved version of Ineonel AlloyX-750 alloy. It increases the al content, improves the lasting strength, and the working temperature is increased to about 870°C. Heat treatment process, the heat treatment time is shortened from 18 hours to 9 hours. The alloy is a nickel-based alloy reinforced by Al, Ti, and Nb. It has good corrosion resistance, oxidation resistance and high thermal hardness. It is mainly used in aviation. and industrial gas turbine components. Because the alloy has high high-temperature strength, excellent high-temperature corrosion resistance and wear resistance, it has been used abroad to manufacture valves and other parts for high-load internal combustion engines.
Inconel751 alloy (UNSN07751) is a precipitation hardening nickel-chromium alloy mainly used for exhaust valves of internal combustion engines. This alloy has essentially the same excellent physical, mechanical and corrosion resistance properties as Ineonel-750. Its thermal properties are very close to Ineonel alloy X-750.
When evaluating materials for exhaust valve applications, nichrome performed well in lead oxide screening tests at 1675°F (913°C). Inconel751 alloy has repeatedly provided good results with an average corrosion rate of 4.31g/dm2/h. Like other nickel-chromium alloys, Inconel751 alloy is also resistant to attack by other exhaust gas stream impurities such as sulfur, bromine and chlorine.
| Composition | Fe | C | Si | Mn | S | Cr | Ni * | Cu | Ti | Nb ** | Al |
| Max | 5 | - | - | - | - | 14 | 70 | - | 2 | 0.7 | 0.9 |
| Min | 9 | 0.1 | 0.5 | 1 | 0.01 | 17 | - | 0.5 | 2.6 | 1.2 | 1.5 |
| Temperature | Tensile strength | Yield point | Elongation or elongation after break | Rate of reduction in area | Hardness |
| σb | σs | δ | ψ | HBW | |
| Mpa | Mpa | % | % | ||
| Room temperature | 1310 | 976 | 22.5 | 38.2 | BHN |
| 352 | |||||
| 649°C | 1100 | 889 | 22.5 | 32.1 | 291 |
| 732°C | 860 | 783 | 18.5 | 25.7 | 235 |
| 816°C | 554 | 526 | 26 | 35.9 | 173 |
Application areas:
Aerospace Industry: Inconel751 alloy is widely used in high-temperature engine components, turbine disks, combustion chambers and nozzles in the aerospace industry to provide excellent high-temperature performance and corrosion resistance.
Petrochemical industry: Inconel751 alloy is used to manufacture high-temperature and high-pressure equipment in the petrochemical industry, such as catalyst tubes, reactors, heat exchangers, etc. Its corrosion resistance and high temperature properties enable it to adapt to the harsh environments found in petrochemical processes.
Power generation industry: Inconel 751 alloy is commonly used in the manufacture of high-temperature equipment such as burners, gas turbines, and steam turbines in the power generation industry. Its high temperature performance and corrosion resistance allow it to maintain good performance in high temperature, high pressure and corrosive environments..
Alloy Composition: Inconel 751 is a nickel-chromium alloy with various other elements such as aluminum, titanium, and niobium added to enhance its properties. The first step is to determine the precise composition of the alloy based on specific requirements or industry standards.
Melting: The production process starts with melting the raw materials to create the Inconel 751 alloy. This is typically done in a controlled atmosphere furnace using electric arc melting or induction melting. The alloying elements are carefully added to achieve the desired composition.
Casting: Once the alloy is melted and homogenized, it is cast into a suitable form, such as ingots or billets. This is generally done through methods like continuous casting or ingot casting, depending on the desired wire size and shape.
Hot Working: The cast material is then subjected to hot working processes, such as hot rolling or hot extrusion. These processes involve heating the material to elevated temperatures and shaping it into the desired wire form. Hot working helps refine the grain structure, improve mechanical properties, and reduce the overall cross-sectional area to achieve the desired wire diameter.
Cold Working: After hot working, the wire is typically subjected to a series of cold working operations, such as cold drawing or cold rolling. This process involves passing the wire through a series of dies or rolls, which reduce its diameter further and improve its dimensional accuracy, surface finish, and mechanical properties. Cold working also increases the wire's strength and hardness.
Heat Treatment: Inconel 751 wire may undergo heat treatment processes like solution annealing and age hardening to optimize its mechanical properties. Solution annealing involves heating the wire to a specific temperature range and then rapidly cooling it to dissolve any precipitates, followed by a controlled aging process to strengthen the alloy.
Inspection and Testing: Throughout the production process, the wire is subjected to various quality control measures to ensure its compliance with specifications and standards. This includes dimensional checks, visual inspections, and testing for mechanical properties, such as tensile strength, yield strength, and elongation.
Finishing and Packaging: Once the wire meets the required specifications and quality standards, it undergoes final finishing processes, such as cleaning, surface treatment, and/or coating, if necessary. The wire is then coiled, spooled, or cut into appropriate lengths and packaged for shipment or further processing by customers.
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