INCONEL 740H Rod: High-Performance Alloy for Elevated Temperature and Corrosive Environments

INCONEL 740H rods are engineered to meet the rigorous demands of advanced power generation and industrial applications. This nickel-based, precipitation-hardenable superalloy offers an exceptional combination of high strength, creep resistance, and corrosion resistance at elevated temperatures. Its robust performance makes it a preferred choice for components exposed to aggressive environments, such as those found in ultra-supercritical power plants and chemical processing facilities.

Chemical Composition of INCONEL 740H Rods:

Mechanical Properties:

Physical Properties:

Applicable Standards:

INCONEL 740H rods comply with international standards such as ASTM B983, ensuring consistent quality and performance.

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Applications of INCONEL 740H Rods:

• Power Generation: Utilized in advanced ultra-supercritical (A-USC) coal-fired boilers for components like superheater and reheater tubes, where high-temperature strength and corrosion resistance are critical.​

• Chemical Processing: Suitable for equipment exposed to aggressive chemicals and high temperatures, benefiting from its robust corrosion resistance.​

• Aerospace: Applied in manufacturing high-strength, heat-resistant components for aircraft and spacecraft.​

• Marine Engineering: Ideal for components exposed to seawater, offering excellent resistance to pitting and crevice corrosion.​

Frequently Asked Questions (FAQs):

Q1: What makes INCONEL 740H rods suitable for high-temperature applications?

A1: The alloy's precipitation-hardening mechanism, involving gamma prime (γ') phase formation, imparts exceptional strength and creep resistance at elevated temperatures.

Q2: How does INCONEL 740H perform in corrosive environments?

A2: Its high chromium content provides excellent resistance to oxidation and corrosion, particularly in environments like coal ash and flue gases.​

Q3: Can INCONEL 740H rods be welded?

A3: Yes, INCONEL 740H exhibits good weldability. Appropriate welding procedures should be followed to maintain its mechanical properties and corrosion resistance.​

Q4: What are the typical sizes available for INCONEL 740H rods?

A4: Diameters typically range from 3 mm to 600 mm, with lengths from 0.5 m to 6.0 m. Custom sizes can be produced to meet specific requirements.​

Q5: Are there specific heat treatments required for INCONEL 740H rods?

A5: Solution annealing followed by aging is commonly employed to achieve the desired mechanical properties and microstructure.​

INCONEL 740H rods are the material of choice for industries requiring a combination of high strength, excellent creep resistance, and superior corrosion resistance in challenging environments.

Wuxi Nickel New Material Co., Ltd. is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys, corrosion-resistant alloys, heat-resistant steels, nickel-based welding wires, and other specialty materials, with an annual production capacity of 5,000 tonnes. Our product range includes plates, bars, wires, and strips, which are widely used in industrial electric furnaces, power‐station boilers, petrochemical plants, aerospace, marine engineering, machinery, and electronic instrumentation. These materials are characterized by high electrical resistance, high‐temperature strength, corrosion resistance, wear resistance, and fatigue resistance. We can manufacture in compliance with national, industry, and international standards, and are also able to tailor products to meet specific customer requirements.
The company is committed to improving and enhancing its production infrastructure all year round, with a full range of production and processing equipment including vacuum smelting, hot processing, cold processing, and heat treatment. It also has various physical and chemical analysis testing facilities such as spectrometers to ensure product quality. The company has a high-quality R&D, production, and management team that is fully capable of meeting the complex requirements of the current market for material diversification, refinement, and functionalization. Our company is particularly skilled in developing and producing "specialized materials" that are suitable for the market and specific customer needs, which will be one of our company's characteristics. The company adheres to the business philosophy of "guided by market demand, driven by technological progress, and committed to optimizing and innovating materials to create greater value for customers", serving society and the market.