1. Core Attributes

High chromium (Cr): Approximately 25% - Provides excellent antioxidant and corrosion resistance properties.

High molybdenum (Mo): Approximately 4% - Significantly enhances resistance to pitting and crevice corrosion.

Nickel (Ni): Approximately 7% - Stable austenitic phase, contributing toughness and weldability.

Nitrogen (N): Approximately 0.3% - A crucial element that significantly enhances strength and stabilizes the microstructure, as well as improving corrosion resistance at points.

2. Core Performance Advantages

Outstanding corrosion resistance

• Resistant to pitting & crevice corrosion: With an extremely high pitting resistance equivalent value (PREN ≥ 40), it performs exceptionally well in chloride-containing environments (such as seawater, salt water).

• Stress Corrosion Cracking Resistance (SCC): The duplex structure inherently offers resistance to stress corrosion cracking and is suitable for high-temperature and high-chloride environments.

• Uniform corrosion: Exhibits excellent corrosion resistance to various organic acids and inorganic acids (such as sulfuric acid and phosphoric acid).

Extremely high mechanical strength

• Tensile strength: ≥ 800 MPa

• Yield strength: ≥ 550 MPa (approximately twice that of 316 stainless steel)

• High impact strength and high fatigue strength.

• Advantages: Using 2507 can reduce the wall thickness of the equipment, thereby reducing weight and lowering costs.

Other excellent features

• Good weldability and formability.

• Low thermal expansion coefficient and good thermal stability.

• High thermal conductivity.

  
  

3. Main Application Domains

2507, due to its superior performance, is widely used in critical equipment operating in harsh environments:

Ocean and seawater environment: Submarine pipelines, ship propellers, shafts, seawater desalination plant heat exchangers, high-pressure reverse osmosis membrane shells.

Petroleum and natural gas industry: Underground pipelines, oil and gas transportation pipelines, heat exchangers, pressure vessels, process systems.

Petrochemical industry: Heat exchangers, pipelines, storage tanks in oil refineries, especially those equipment that are exposed to chloride environments.

Environmental protection and energy: Flue gas desulfurization (FGD) system, wastewater treatment system, fire protection system piping.

Mechanical manufacturing: Requires mechanical components such as pumps, valves, and fasteners with high strength and corrosion resistance.