Incoloy 925 / UNS N09925 / 1.4592 / NiFe25Cr22Mo3

Stainless Alloy INCOLOY 925: Properties, Applications, and Features

✅ General Technical Characteristics

The INCOLOY 925 alloy is a high-strength nickel-iron alloy with added molybdenum, titanium, and copper, providing excellent corrosion resistance and mechanical strength. This alloy is specifically designed for operation in aggressive environments, including the oil and gas industry as well as marine conditions. It combines the corrosion resistance of INCOLOY 825 with enhanced mechanical properties due to precipitation hardening.

Main Characteristics:

• High corrosion resistance in acidic and chloride environments.
• High mechanical strength and hardness after heat treatment.
• Resistance to pitting and crevice corrosion.
• Excellent thermal stability.
• Good weldability and machinability.

🔬 Chemical Composition of INCOLOY 925 (%):

• Nickel (Ni): 42.0 – 46.0
• Iron (Fe): Balance
• Chromium (Cr): 19.5 – 22.5
• Molybdenum (Mo): 2.5 – 3.5
• Copper (Cu): 1.5 – 3.0
• Titanium (Ti): 1.9 – 2.4
• Aluminum (Al): 0.1 – 0.5
• Manganese (Mn): ≤ 1.0
• Silicon (Si): ≤ 0.5
• Carbon (C): ≤ 0.03

💡 The optimal combination of nickel, chromium, molybdenum, and copper ensures superior corrosion resistance even under the most demanding conditions.

🏭 Applications

Due to its excellent physicochemical properties, INCOLOY 925 alloy is widely used in various industrial sectors.

Main Application Areas:

• Oil and Gas Industry – well components, pipelines, valves, and fastening elements.
• Marine Industry – components for offshore platforms, pipelines, and resource extraction systems.
• Chemical Industry – reactors, pipeline systems, and tanks for aggressive environments.
• Energy Sector – turbine components, heat exchangers, and nuclear reactor elements.

📊 Mechanical Properties

• Tensile Strength (Rm): ≥ 825 MPa
• Yield Strength (Rp0.2): ≥ 550 MPa
• Hardness (HB): ≤ 290 HB
• Elongation (A5): ≥ 15 %

⭐ Features

• High corrosion resistance – resistant to acidic environments and seawater exposure.
• Strength and durability – excellent endurance under mechanical loads.
• Heat resistance – stability at high temperatures.
• Wear resistance – suitable for demanding operational conditions.
• Ease of processing – easily weldable and machinable.

Incoloy 925 Delivery Forms