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Leading Manufacturer of welded Inconel 625 Tubes & Pipes

Quality Guaranteed! GAOFA TECH Excels in Delivering Reliable and High-Quality Inconel 625 Tubes to Fulfill Your Stringent Requirements.

Elevate your industrial operations to new heights with GAOFA TECH! As experts in the field, we specialize in supplying high-quality Inconel 625 tubes that set the standard for excellence. With our unwavering commitment to quality, our tubes are perfectly tailored for your industrial heating requirements. Trust in our premium solutions, customized to meet your specific needs, and unlock the true potential of your operations.

Inconel 625 Tube Specification:

ASTM B704, ASTM B444

Welded Pipes & Tubes:
Outer Diameter: 6.0mm to 88.9mm
Wall thickness: 0.3mm to 2.0mm

Seamless Pipes & Tubes:
Outer Diameter: 2.0mm to 114mm
Wall thickness: 0.3mm to 8.0mm

Length: Standard 6000mm, but we can adjust based on customer’s requirement.

Heat Treatment: Inline bright annealing.

NDT: Hydrostatic, Pneumatic, E.T. U.T based on standard or customers’ requirements.

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Inconel 625 (Alloy 625, 2.4856, UNS N06625) nickel-based alloy tube and tubing

INCONEL 625 is a Nickel-Chromium-Molybdenum-Columbium (Niobium) alloy with a pure austenitic structure in the solid solution state. It has excellent strength at temperatures up to 1500°F (816°C) and is resistant to a variety of corrosive media. Inconel 625 has the advantages of high strength, good workability (including welding), and corrosion resistance. Operating temperatures range from low temperatures to 1800°F (982°C). Inconel 625 alloy derives its strength from the reinforcing effect of molybdenum and niobium on its nickel-chromium matrix, and therefore does not require precipitation hardening treatment. The alloy has both good corrosion resistance, oxidation resistance and high strength, as well as good formability and toughness. It is suitable for use where both high corrosion resistance and high strength are required to match.
Inconel 625 is resistant to chloride ion stress corrosion cracking, pitting and stress corrosion cracking, making it suitable for seawater applications. Alloy 625 can operate at temperatures from cryogenic to 700°F (370°C).

Details of contents : C: 0.10% max, Mn: 0.50% max, Si: 0.50% max, P: 0.015% max, S: 0.015% max, Cr: 20.00% – 30.00%, Mo: 8.00% - 10.00%, Nb: 3.15% - 4.15%, Co: 1.0% max, Ti: 0.40% max, Al: 0.40% max, Fe: 5.00% max, Ni: Bal.
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Inconel 625 tubes & pipes features:

Excellent oxidation resistance

High breaking strength, creep strength and tensile strength

Excellent weldability and brazeability

Best Fatigue Strength and Thermal Fatigue Strength

Resistance to chloride ion stress corrosion cracking
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Inconel 625 tubes & pipes application:

Alloy 625 has both high corrosion resistance and good thermal strength, so it can be used as both a corrosion-resistant alloy and a thermal strength alloy. In general, Inconel 625 alloy is mainly used for corrosion resistance of HNO 3, HNO 3 + H 2 SO 4, HNO 3 + HF mixed acid and wet phosphoric acid containing H 2 SO 4 and F-, Cl-, and seawater corrosion resistance, etc.; while Inconel 625 Plus alloy has similar corrosion resistance to Inconel 625 alloy in acid medium and seawater. In addition to corrosion resistance in acid media and seawater, Inconel 625 Plus alloy has excellent resistance to chloride and sulfide stress corrosion as well as pitting and crevice corrosion, even in the aging state. Both alloys can be used as corrosion-resistant, high-strength materials to manufacture towers, tanks, vessels, pipelines, as well as reactors, heat exchangers, valve parts, etc.

Typical applications are the following:

Phosphoric acid production facilities

Plants for handling radioactive waste

Oil piping systems and bushings

Marine industry and seawater equipment

Marine water piping systems for shipbuilding

Stress corrosion anti-crack compensators

Heating furnace liners

Refinery and offshore platform combustion systems
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Inconel 625 Tubes & Pipes Chemical Composition (%):

Inconel 625≦0.10≦0.50≦0.50≦0.015≦0.01520.00-30.008.00-10.003.15-4.15≦0.10≦0.40≦0.40≦5.00BAL

Inconel 625 Tubes & Pipes Mechanical Properties

Rp0.2, MPa
A50mm, %
Inconel 625≧827≧414≧30


Plate, sheet, strip: ASTM B443
Tube & tubing: ASTM B704

Inconel 625 Density:

0.305 lb/in3 (8.44g/cm3)
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