Inconel 625

Inconel 625 is a high-performance nickel-chromium-molybdenum-niobium alloy known for its excellent corrosion resistance, high-temperature strength, and fatigue resistance. It maintains strong mechanical performance in seawater, chemical environments, and elevated temperatures, making it suitable for critical aerospace, marine, and energy components.

Appearance & Properties

Color: Silver-gray to bright silver-gray

Density: Approx. 8.44 g/cm³

Tensile Strength: Typically ≥827 MPa in the annealed condition, depending on specification and condition

Corrosion Resistance: Excellent

High-Temperature Performance: Excellent

Machinability: Difficult

Fatigue Resistance: Excellent

Weldability: Good

Magnetism: Generally essentially non-magnetic

Surface Finishes: Blasting, polishing, passivation, grinding, PVD coating, etc.

Typical Applications

Inconel 625 is widely used in aerospace, marine and offshore, oil and gas, chemical processing, energy, and high-temperature industrial equipment.

Typical parts include engine components, exhaust-system parts, valves, pump components, marine fasteners, pipe fittings, heat-exchanger components, and high-temperature corrosion-resistant CNC parts.

Advantages

• Excellent corrosion and seawater resistance

• Good high-temperature strength

• Excellent fatigue resistance

• Good weldability

• Suitable for severe high-temperature and corrosive environments

Limitations

• Very difficult to CNC machine

• Strong tendency to work harden

• High tool wear and relatively low machining efficiency

• High material and machining costs