Inconel Alloy 625/N06625/2.4856/NS 3306 Precipitation-Hardenable for Enhanced Mechanical Properties in Severe Environments

Inconel Alloy 625 (UNS N06625) is a high-performance, versatile alloy with outstanding properties in high-temperature and corrosive environments. Its exceptional resistance to oxidation, pitting, and stress corrosion cracking, along with its high strength and good fatigue resistance, make it a preferred choice for industries like aerospace, chemical processing, marine, nuclear, and oil and gas. The alloy’s combination of heat resistance, strength, and weldability ensures its reliability in the most demanding applications.

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Key Features:

• Composition:

Nickel (Ni): 58%–70% (balance of the alloy).

Chromium (Cr): 20%–23% (providing resistance to oxidation and corrosion).

Molybdenum (Mo): 8%–10% (adds resistance to pitting, crevice, and stress corrosion cracking).

Iron (Fe): 5%–10%.

Other elements include niobium (Nb), titanium (Ti), and small amounts of carbon, manganese, and silicon.

• Mechanical Properties:

Tensile Strength: Approx. 1,380–1,500 MPa (varies depending on the form and temperature).

Yield Strength: Approx. 690–800 MPa.

Elongation: Typically around 30% (providing good ductility).

Hardness: Good hardness properties, typically in the range of Rockwell B 90–95.

• Corrosion and Oxidation Resistance:

Excellent Resistance to a wide range of aggressive environments, including sea water, acidic solutions, and high-temperature gases.

Inconel 625 has superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for use in severe service conditions.

Performs well in oxidizing and reducing environments due to its high chromium and molybdenum content.

It is particularly resistant to high-temperature oxidation and to carburization, making it ideal for high-temperature applications in combustion and furnace environments.

• Thermal Properties:

Melting Point: Around 1,350°C–1,400°C (2,462°F–2,552°F).

Thermal Conductivity: Lower than pure metals like copper, but adequate for high-temperature applications.

Coefficient of Expansion: Moderate, making it stable under thermal cycling.

• Electrical and Magnetic Properties:

Electrical Conductivity: Relatively low compared to copper, typical for high-performance alloys.

Magnetic Permeability: Inconel 625 is non-magnetic, making it suitable for sensitive electronic or magnetic applications.

• Weldability and Fabrication:

Excellent Weldability: Inconel 625 has good weldability by most standard welding methods, including TIG, MIG, and plasma welding. It can be welded in both the annealed and solution-treated conditions.

Can be cold-formed and hot-formed, though hot forming must be done with caution to avoid excessive grain growth.

Machinability: Although it is a tough material, it can be machined, albeit with difficulty. It is generally recommended to use carbide tools for machining.

Applications:

• Aerospace: Used in turbine blades, seals, exhaust systems, and other high-temperature engine components due to its heat and corrosion resistance.
• Chemical Processing: Equipment exposed to high-temperature and corrosive chemicals, such as heat exchangers, reactors, and piping systems.
• Marine Environments: Due to its outstanding resistance to seawater corrosion, Inconel 625 is used in marine and offshore applications, such as subsea equipment, propeller blades, and other parts exposed to saltwater.
• Nuclear Power: Used in reactor cores, steam generator tubing, and other parts exposed to radiation and high temperatures.
• Oil and Gas: Ideal for high-performance applications like gas turbines, deep-sea equipment, and equipment exposed to extreme pressure and temperature conditions.
• Industrial Furnace: For parts like furnace linings, heating elements, and combustion chambers.

Company Overview:

Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and preci.sion of our products. We have the tightest tolerances and deliver within a few days to a fewweeks. As a result, we have become the leading alloy wire supplier in the industry.

Senphus Subsidiaries:

• Jiangyin Chengxin Alloy Material Co., Ltd.
• Jiangyin Senphus Electrical Materials Co., Ltd.
• Jiangsu Xiangcheng Supply Chain Management Co., Ltd.

Jiangyin Chengxin Alloy Material Co., Ltd.: With nearly 20 years of experience, Jiangyin Chengxin is a leading alloy wire manufacturer in China. We offer a wide range of services, from fine wire drawing to resistance wire manufacturing. Our specialty lies in the quality and precision of our products, achieving the tightest tolerances and delivering orders within days to weeks. As a result, we have established ourselves as the premier supplier of alloy wire in the industry.

Our product range includes:

• Copper-nickel alloys (CuNi1-CuNi44)
• Karma (Nikrothal L/Evanohm/Alloy 800)
• Manganin and Constantan
• Nickel-chromium alloys
• Thermocouple alloys (Type K, N, E, T, J)
• Thermocouple extension wire
• PTC thermistor resistance alloy
• Pure nickel wire and Monel alloy

These alloys are available in various forms, including wire, ribbon, stranded, and enamelled. Major applications include seat heating, underfloor heating, military projects, aerospace, household appliances, heating wire, mechanical and electrical plants, and temperature instruments. Our manufacturing processes are ISO 9001:2015 certified, and we specialize in fine and ultra-fine wire drawing, offering wire diameters from 0.025 mm (0.001") to 13 mm (0.51") in small batches, medium volumes, and mass production. We maintain a comprehensive quality inspection system, including in-house chemical analysis, chromatographic analysis, metallurgical analysis, pinhole tests, wire construction tests, and tension tests to ensure the highest quality standards.

Senphus Electrical Material Co., Ltd.: Founded in 2003, Senphus Electrical Material Co., Ltd. integrates research, manufacturing, and sales of electric heating alloys, heating cables, heating wires, and heating products. Leveraging over a decade of technical expertise in heating alloy wire, we have adopted advanced heating cable technology and machinery, successfully developing heating cables, temperature controllers, and temperature control systems suitable for building heating, pipe insulation, outdoor snow melting, wind power blade production, car seat heating, and healthcare applications.

The company is recognized as a high-tech enterprise in Jiangsu Province and a small giant enterprise in Jiangyin City, specializing in innovative technologies. We operate the "Wuxi Heating Cable Engineering Technology Research Center" and collaborate with experts from renowned domestic universities. Our portfolio includes 5 invention patents and over 30 utility model patents, showcasing our strong research and development capabilities.

With an annual output exceeding 1,000 tons of thermal alloy wire and an output value of approximately 105 million yuan, our products are well-received in markets such as the UK, Italy, Canada, Peru, and Spain. Our heating cables generate an annual output value of over 80 million yuan, with exports to Germany, Japan, the United States, Malaysia, Denmark, Brazil, and other countries.

The company has successfully passed multiple quality management system certifications, including IATF 16949, ISO 9001, ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). Our heating cables and related products have also obtained test reports from the Shanghai Cable Research Institute Test Center and received certifications such as UL (United States), VDE (Germany), CE (European Union), and RoHS.

Commitment to Quality: We adhere to the business commitment of "Reputation First, Quality First, Customer First" and uphold the quality policy of "Integrity-Based, Quality-Oriented, Excellent Service." We are dedicated to providing accurate products and professional services, and we look forward to collaborating sincerely with you to achieve mutual success.