High Temperature Resistance Inconel 690 Nickel Base Alloy Wire

Product Description

Product Description

Inconel 690 Alloy wire
 

Inconel 690 is a high-chromium nickel alloy known for its excellent resistance to corrosion and oxidation, particularly in high-temperature environments. The production process for Inconel 690 wire is similar to that of other nickel-based alloys, such as Inconel 625, but with adjustments to the alloy composition and processing parameters to meet the specific requirements of wire production. Here's a general outline of the production process:

1. Chemical Composition: Inconel 690 primarily consists of nickel (Ni), chromium (Cr), and iron (Fe), with small additions of other elements such as molybdenum (Mo) and niobium (Nb). The exact composition may vary slightly depending on the specific grade and manufacturer.
    

2. High Temperature Resistance: Inconel 690 exhibits remarkable resistance to high temperatures, making it suitable for applications where exposure to heat is a concern. It retains its mechanical strength and structural integrity even at temperatures exceeding 1000°C (1832°F).
    

3. Corrosion Resistance: One of the most notable properties of Inconel 690 is its exceptional resistance to corrosion in a wide range of environments, including sulfur-containing atmospheres, solutions, and alkaline media. This corrosion resistance makes it ideal for use in chemical processing, petrochemical, and pollution control industries.
    

4. Oxidation Resistance: Inconel 690 demonstrates excellent resistance to oxidation, even in environments with high levels of oxygen and sulfur. This property allows it to maintain its surface integrity and prevent the formation of oxide scales, which can compromise the performance of other materials at elevated temperatures.
    

5. Creep and Rupture Strength: The alloy's superior creep and rupture strength make it suitable for applications subjected to prolonged exposure to high temperatures and mechanical stress, such as furnace components, heat exchangers, and thermocouple sheaths.
    

6. Thermal Stability: Inconel 690 exhibits good thermal stability, retaining its properties over extended periods of operation at elevated temperatures. This stability minimizes the risk of degradation or failure, ensuring reliable performance in demanding environments.
    

7. Fabrication and Machinability: While machining Inconel 690 can be challenging due to its high strength and hardness, it is still readily fabricated using conventional methods such as forging, machining, and welding. However, specialized equipment and techniques may be required to achieve optimal results.

Parameter	Value
Material	Inconel 625
Composition	Nickel (Ni): ~58%, Chromium (Cr): ~21.5%, Molybdenum (Mo): ~9%, Niobium (Nb): ~3.6%, Iron (Fe): ~5%
Density	8.44 g/cm^3
Melting Point	1290-1350°C (2350-2460°F)
Tensile Strength (Room Temperature)	760 MPa (110,000 psi)
Yield Strength (0.2% offset)	345 MPa (50,000 psi)
Elongation at Break	30%
Hardness (HV)	150-200 HV
Electrical Resistivity	129.6 μΩ·cm at 20°C
Thermal Conductivity	8.4 W/m·K at 21°C
Specific Heat Capacity	444 J/kg·K at 21°C
Coefficient of Thermal Expansion	12.8 µm/m·K (20-100°C)
Maximum Operating Temperature	980°C (1800°F)

Applications:

1. Aerospace and Aircraft Components:

   • Used in aircraft engine components, turbine blades, combustion chambers, and exhaust systems due to its high strength and resistance to corrosion and oxidation.

2. Chemical Processing:

   • Widely employed in chemical processing industries for manufacturing reactor vessels, piping systems, and heat exchangers due to its corrosion resistance and chemical compatibility.

3. Oil and Gas Industry:

   • Utilized in offshore and onshore oil drilling equipment, downhole components, and wellhead fittings due to its resistance to corrosive environments encountered in oil and gas extraction.

4. Marine Applications:

   • Suitable for marine environments, including seawater and brine applications, due to its excellent resistance to corrosion and erosion.

5. Medical Devices:

   • Used in medical implants and surgical instruments due to its biocompatibility and resistance to corrosion in bodily fluids.

6. Power Generation:

   • Employed in power generation facilities for manufacturing gas turbines, steam turbines, and boiler components due to its high-temperature strength and resistance to thermal fatigue.

In summary, Inconel 625 wire is a high-performance material known for its exceptional corrosion resistance, high temperature strength, and versatility, making it indispensable in a wide range of industrial applications across various sectors.

 

 

 

1. Raw Material Selection: The production process begins with the selection of high-quality raw materials. Inconel 625 is a nickel-chromium-based superalloy known for its excellent corrosion resistance, high strength, and good fabricability. The primary elements in its composition include nickel, chromium, molybdenum, niobium, and iron.

2. Melting: The selected raw materials, in the form of metal powders or scrap, are melted in an electric arc furnace or a vacuum induction furnace. This process ensures thorough mixing and homogenization of the alloying elements to achieve the desired chemical composition.

3. Casting: Once the alloy is molten and properly mixed, it is cast into ingots or billets of the required size and shape. The casting process may involve techniques such as continuous casting or investment casting, depending on the specific requirements of the wire production.

4. Hot Working: The cast ingots are then subjected to hot working processes such as rolling, forging, or extrusion. These processes involve shaping the material at elevated temperatures to reduce its cross-sectional area and increase its length. Hot working helps refine the microstructure, improve mechanical properties, and achieve the desired wire dimensions.

5. Cold Drawing: After hot working, the material undergoes cold drawing to further reduce its diameter and improve its surface finish. In this process, the wire is pulled through a series of dies with progressively smaller diameters, while also being annealed intermittently to relieve stress and improve ductility.

6. Annealing: Annealing is a heat treatment process that involves heating the wire to a specific temperature and then cooling it slowly to relieve internal stresses, refine the grain structure, and enhance the material's mechanical properties.

7. Surface Treatment: Depending on the application requirements, the Inconel 625 wire may undergo surface treatments such as pickling, passivation, or electroplating to improve its corrosion resistance, appearance, or compatibility with specific environments.

8. Quality Control: Throughout the production process, stringent quality control measures are implemented to ensure that the Inconel 625 wire meets the required specifications and standards. This includes dimensional inspection, chemical analysis, mechanical testing, and non-destructive testing techniques such as ultrasonic testing or eddy current testing.

9. Packaging and Delivery: Once the wire has passed quality control checks, it is packaged according to customer requirements and shipped to its destination for use in various industrial applications, including aerospace, chemical processing, marine engineering, and oil and gas exploration.

Company Profile

FAQ

 

 
What is your working time?
Monday-Saturday : 7:30AM-17:00PM (Beijing time, GMT+08.00)
We have public holiday during May.1-3, Oct.1-7 and Chinese New Year holiday . For detail,please see our update holiday notice.
During these period, if you have a demand, Please send me an email.

Do you provide free samples?
Yes, we can provide a free sample for testing,buyer should bear all the shipping costs.

What is your payment terms?
T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal

What is the lead time?
Usually sample lead time is 7 days after payment has been confirmed.
Normal order is 10-30days,it depends on customers' quantity.