Incoloy 825 Rods: High-Temperature Corrosion Resistance for Chemical Processing

Incoloy 825 rods are high-performance nickel-iron-chromium alloys designed for exceptional resistance to a wide range of corrosive environments. These rods are particularly effective in applications involving sulfuric and phosphoric acids, seawater, and environments prone to stress corrosion cracking. With outstanding weldability and high-temperature stability, Incoloy 825 rods are ideal for industries such as chemical processing, nuclear fuel reprocessing, and pollution control.

Chemical Composition (ASTM B425 / ASME SB425)

Mechanical Properties

Physical Properties

• Density: 8.14 g/cm³

• Melting Range: 1370–1400°C (2500–2550°F)

• Electrical Resistivity: 1.13 µΩ·m at 20°C

• Thermal Conductivity: 12.3 W/m·K at 100°C

• Coefficient of Thermal Expansion: 14.1 µm/m•°C

• Modulus of Elasticity: 196 GPa​

Applications

Incoloy 825 rods are widely used in:​

• Chemical processing industries

• Pollution control equipment

• Oil and gas well piping

• Nuclear fuel reprocessing

• Acid production and pickling equipment

• Handling of radioactive wastes​

Frequently Asked Questions

1. What industries benefit from Incoloy 825 rods?

Incoloy 825 rods are ideal for industries such as chemical processing, pollution control, oil and gas, and nuclear fuel reprocessing due to their exceptional corrosion resistance and high-temperature stability.​

2. How does Incoloy 825 compare to other alloys?

Compared to other alloys, Incoloy 825 offers superior resistance to both reducing and oxidizing acids, stress-corrosion cracking, and localized attacks like pitting and crevice corrosion.​

3. What are the welding considerations for Incoloy 825 rods?

Incoloy 825 rods can be readily welded using shielded metal-arc processes with alloy welding electrode 135, gas shielded arc processes with alloy filler metal 65, and resistance welding processes. No post-weld heat treatment is required, and the corrosion resistance of the deposited weld metal is equivalent to that of the parent metal.​

Standards & Specifications

• UNS: N08825

• W.Nr: 2.4858

• ASTM: B425

• ASME: SB425

• BS: 3076 NA16

• ISO: 15156-3

• NACE: MR0175​

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.