Alloy 625 Seamless Pipes Nickel Alloy Pipe UNS N06625 

Alloy 625, also known as Inconel 625, is a nickel-chromium-molybdenum alloy known for its high strength, excellent fabricability, and outstanding corrosion resistance. This superalloy is widely used in various challenging environments due to its versatility and performance.

• Nickel (Ni): 58.0 min
• Chromium (Cr): 20.0 - 23.0
• Molybdenum (Mo): 8.0 - 10.0
• Niobium (Nb) + Tantalum (Ta): 3.15 - 4.15
• Iron (Fe): 5.0 max
• Cobalt (Co): 1.0 max
• Manganese (Mn): 0.50 max
• Silicon (Si): 0.50 max
• Aluminum (Al): 0.40 max
• Titanium (Ti): 0.40 max
• Carbon (C): 0.10 max
• Phosphorus (P): 0.015 max
• Sulfur (S): 0.015 max

• High Strength: Alloy 625 maintains high strength and toughness at temperatures ranging from cryogenic up to 982°C (1800°F).
• Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and intergranular attack. It also offers excellent resistance to chloride-ion stress-corrosion cracking.
• Oxidation Resistance: Superior oxidation resistance at temperatures up to 1093°C (2000°F).
• Fabricability: Easily fabricated by conventional techniques, including welding and forming.

• Aerospace: Turbine engines, exhaust systems, and rocket components due to its high-temperature strength and oxidation resistance.
• Marine: Marine environments and offshore oil and gas industries for its outstanding resistance to seawater corrosion.
• Chemical Processing: Equipment and piping in chemical processing plants due to its resistance to a wide range of corrosive environments.
• Power Generation: Heat exchangers, reactor cores, and steam generator tubing in nuclear power plants.

• ASTM B444 / ASME SB444
• ASTM B705 / ASME SB705
• API 5LC

• Tensile Strength: 120 ksi (827 MPa) min
• Yield Strength (0.2% offset): 60 ksi (414 MPa) min
• Elongation: 30% min
• Hardness: Typically in the range of 200 - 250 HB

• Outer Diameter (OD): Typically ranges from 0.5 inches to 24 inches.
• Wall Thickness: Available in schedules ranging from SCH 5S to SCH XXS, depending on the application requirements.

• Pipes can be supplied with various surface finishes, including pickled, polished, or with a specific roughness as required by the application.

The following table lists only some of the grades: