Inconel 625 Nickel Alloy Seamless Pipe UNS N06625 6m Length SCH40S Hollow Tube

Inconel 625 Nickel Alloy Seamless Pipe Tube UNS N06625 6m Length SCH40S Hollow Tube

Products Specification

Inconel 625 Tubing Description

Inconel 625 is a nickel-chromium-molybdenum superalloy renowned for its exceptional corrosion resistance, high strength, and outstanding performance in extreme environments. The tubing form is widely used in aerospace, chemical processing, and marine industries due to its ability to withstand oxidation, pitting, and crevice corrosion.

Key Parameters of Inconel 625 Pipe Tube

• Composition:

  • Nickel (Ni): ≥58%

  • Chromium (Cr): 20–23%

  • Molybdenum (Mo): 8–10%

  • Niobium (Nb): 3.15–4.15%

  • Iron (Fe): ≤5%

  • Others: Al, Ti, C, Mn, Si (trace amounts)

• Mechanical Properties:

  • Tensile Strength: ≥830 MPa (120 ksi)

  • Yield Strength: ≥415 MPa (60 ksi)

  • Elongation: ≥30%

  • Hardness: ≤90 HRB

• Temperature Range:

  • Cryogenic to 982°C (1800°F) (continuous service).

Specifications & Standards

• ASTM Standards:

  • ASTM B444 / B444M (seamless pipe)

  • ASTM B704 / B705 (welded tubing)

  • ASTM B829 (general requirements)

• Other Standards:

  • ASME SB-444, SB-704, SB-705

  • EN 10269, DIN 17752

  • NACE MR0175 (sulfide stress cracking resistance)

Features of Inconel 625 / Alloy 625

1. Corrosion Resistance: Excellent resistance to seawater, acidic, and chloride-rich environments.

2. High Strength: Maintains mechanical properties at elevated temperatures.

3. Oxidation Resistance: Stable in oxidizing atmospheres up to 980°C.

4. Fabrication Flexibility: Can be welded, machined, and formed with proper techniques.

Advantages of Inconel 625 / UNS N06625 Alloy

• Long service life in harsh conditions.

• Superior fatigue and thermal fatigue resistance.

• Minimal need for protective coatings.

Comparable Grades

• UNS N06625 (equivalent to Inconel 625)

• Alloy 625 (common alternate name)

• 2.4856 (EN/DIN designation)

• NS336 (Chinese GB standard)

Packing Method of our Pipes

• Standard: Plastic caps on ends, wooden crates, or waterproof wrapping.

• Customization: VCI (Vapor Corrosion Inhibitor) paper or nitrogen purging for sensitive applications.

Applications of Inconel 625 Pipes

• Aerospace: Engine exhaust systems, fuel lines.

• Oil & Gas: Downhole tubing, umbilicals, risers.

• Chemical Processing: Heat exchangers, reactor vessels.

• Marine: Seawater pipelines, offshore platforms.

• Nuclear: Radioactive waste handling systems.